Спутник связи. TDRS-I. [Редактировать]

TDRS-I является вторым в серии из трех КА нового поколения (в нее также входят TDRS-H и TDRS-J). Все три аппарата разработаны компанией Hughes Space and Communications (HSC) по контракту с NASA.  КА собран на предприятии компании в г. Эль-Сегундо, шт. Калифорния. В качестве основы аппарата использовалась платформа BSS-601.  При заказе новой серии КА TDRS NASA решило использовать при построении работы с исполнителем ряда коммерческих подходов, а именно:

  • Не стало разрабатывать подробную спецификацию изделия, ограничевшись только выдачей требуемых эксплутационных характеристик.
  • Предусмотрело наличие штрафных санкций. Более того, если в течении первых двух лет количество отказов превысит  9, то компания должна будет предоставить новый аппарат.

TDRS-I был успешно выведен ракета-носителем на геопереходную орбиту. Однако, по прошедствии 6 месяцев, в одном из баков обнаружилось потеря давления. Причиной этого являлся клапан впускающий гелий в бак. Как было установленно причиной являлось неправильная разводка кабелей при сборке. Инженеры разработали решение которое позволило задействовать систему управления давлением из первого бака, который продолжает работать, таким образом топливо во втором баке продолжает использоваться.   

Дополнительные наименования

#НаименованияПоиск в новостяхПоиск в документах
1TDRS 9НайтиНайти
2Tracking and Data Relay Satellite 9НайтиНайти
327389НайтиНайти

Дополнительная классификация

#Наименования
1Страна оператор(владелец) - США
2Тип оператора(владельца) - государственный
3Тип орбиты - ГСО
4Страна производитель - США
5Все спутники связи

Новостная лента[Найти информацию в новостях] [Найти информацию в документах]

#Новостная лента.
12002-03-12. Сразу после запуска произошла частичная потеря давления в одном из четырёх баков системы ориентации и стабилизации. Объявлена частичная конструктивная гибель спутника.Тэги: TDRS-I
22002-09-30. Аппарат достиг орбиты, однако давление в одном из баков осталось нерасчетнымТэги: TDRS-I

Технические характеристики

#ХарактеристикаЗначение
1Масса, кг3180
2Масса (сухая), кг1529
3Платформа 1xBSS-601
4Мощность, Вт2300

Характеристики орбиты

#ХарактеристикаЗначение
1Наклонение, град2.9
2Апогей, км35855.7
3Перигей, км35732.2
4Период, минут1436.1
5САС (планируемый ), год11
6Длинный диаметр эллипса, км42164

Пусковые характеристики

#ХарактеристикаЗначение
1Код NSSDC2002-011A

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Стоимость (аппарат), млн. долл.200
2Оператор Космическое агентство США
3Производитель BOEING COMPANY

Информация об удачном запуске

#ХарактеристикаЗначение
1Дата пуска2002-03-08 at 22:59:00 UTC
2Полезная нагрузка 1xTDRS-I
3Ракета-носитель 1xАтлас 2 A

Найдено 1000 документов по запросу «TDRS-I». [Перейти к поиску]


Дата загрузки: 2017-05-21
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0.05/5
... Relay Satellite (TDRS) K spacecraft as part of the TDRS Replenishment project. The... tracking and data relay satellites, TDRS-K and TDRS-L, to replenish the aging... in the Space Network. The TDRS Replenishment project office at the... acceptance of the two spacecraft: TDRS-K to be launched in December... 2012), followed by launch of TDRS-L in December 2013. LSP provides... 2012 include: completion of the TDRS K and L spacecrafts, in preparation for... Tracking and Data Relay Satellite (TDRS) K in December 2012 (or possibly... early as April 2012) and TDRS L in December 2013; infrastructure upgrades... Array (NuSTAR) on a Pegasus XL; TDRS-K on an Atlas V; and the... Tracking and Data Relay Satellite (TDRS) spacecraft in geosynchronous orbits to... Tracking and Data Relay Satellite (TDRS) K Preship review. Performance Goal 5.4.3.2 By....5 - 55.1 56.3 59.1 51.9 52.4 TDRS Replenishment 25.4 - 1.0 11.4 0.0 0.0 0.0 Budget Authority... of the TDRS K and L spacecraft, in preparation for launch of TDRS K in... as April 2012) and of TDRS L in December 2013; infrastructure upgrades... Network (SN) is a combination of TDRS System (TDRSS) and a set of... and Data Relay Satellite (TDRS) Replenishment The TDRS Replenishment project is responsible for the acquisition of TDRS-K and TDRS-L to replenish the aging... spacecraft in the SN. The TDRS-K and TDRS-L Project Office at GSFC...-orbit acceptance of two spacecraft. TDRS-K and TDRS-L. TDRS-K currently is set to... the satellite in April 2012. TDRS-L is scheduled to launch in... included. In July 2009, the TDRS Replenishment project completed Key Decision... presently using the TDRS reliability model in consultation with TDRS users to assess future requirements for the TDRS constellation and assess future options... Relay Satellite (TDRS) K Payload and Bus Integration and test. TDRS K N/A Complete the... and Data Relay Satellite (TDRS) K Pre-ship review. TDRS K N/A Complete the Space... 17 18 19 20 TDRS Replenishment TDRS K TDRS Replenishment TDRS L Tech & Adv Concepts (Tech... Center, Marshall Space Flight Center N/A TDRS Replenishment Space Communications and Navigation... (SFS) Space Communications and Navigation TDRS Replenishment FY 2012 Budget Request... acquisition of two additional spacecraft, TDRS-K and TDRS-L. TDRS-K is scheduled to be... as early as April 2012. TDRS-L is scheduled for launch in... at least FY 2016. The TDRS Replenishment project supports future Agency... Communications and Navigation TDRS Replenishment Project Commitments The TDRS-K and TDRS-L spacecraft will... and services. Launch dates for TDRS-K and TDRS-L are in December 2012... the new spacecraft. Project Element TDRS Replenishment Provider NASA FY 2011... Request Same Schedule Commitments The TDRS Replenishment project was approved for... for processing to meet the TDRS-K and TDRS-L launch dates. Milestone Name... Development TDRS System Critical Design Review (CDR) January 2010 N/A Same TDRS Systems Integration Review (SIR) January 2011 N/A Same TDRS Flight Readiness Review (FRR) November 2012 N/A Same TDRS K Launch Readiness Date (LRD) December 2012 N/A Same TDRS L Launch Readiness Date (LRD) December... (SFS) Space Communications and Navigation TDRS Replenishment Project Management The Deputy.... Project Management Responsibility Project Element TDRS Replenishment Space Communications and Navigation... Space Center Acquisition Strategy The TDRS K and L project is providing follow... contract to build two additional TDRS spacecraft was awarded to Boeing.... In addition to building the TDRS K and L spacecraft, the contract also... is using the TDRS reliability model, in consultation with TDRS users, to assess future requirements for the TDRS constellation and determine whether the... options. Project Risk Management Title TDRS-K and TDRS-L Obsolescence Risk Management Risk... Atlas V, NuSTAR on a Pegasus XL, TDRS-K on an Atlas V, and RBSP... by FY 2011. As a result, TDRS-K has a scheduled launch date of...; 4) Tracking and Data Relay Satellite (TDRS-K) on an Atlas V; and 5) the... by FY 2011. As a result, TDRS-K has a scheduled launch date of...



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0.09/5
... KDP NPR OIG SCaN SGSS TDRS Fiscal Year Government Accountability Office... tracking and data relay satellites (TDRS) and three ground stations – two... the spacecraft is relayed through a TDRS to 1 The Van Allen Probes... SCaN Program has initiated the TDRS Replenishment Project and the Space... Segment Sustainment (SGSS) Project. The TDRS Replenishment Project purchased three third... option to purchase a fourth satellite – TDRS-N – at a favorable price will result... tracking and data relay satellites (TDRS) and three ground stations – two... an antenna at the Australian TDRS System Facility in Dongara, Australia... the spacecraft is relayed through a TDRS to a ground station, which in... January 2014) Key ATF – Australian TDRS System Facility IOC – Initial Operational... launch of TDRS-1. As NASA launched more of the TDRS fleet, the...) and launched between 1983 (TDRS-1) and 1995 (TDRS-7).8 The second-generation satellites... the launch of TDRS-11 in January 2013 and TDRS-12 in... example, after launch and acceptance TDRS-A became TDRS-1. 8 Lost in the 1986 Space Shuttle Challenger accident, TDRS-2 never made it to orbit... expects the second third-generation TDRS (launched January 2014) to join... outlasted design expectations. For example, TDRS-1 was in orbit for 26... TDRS-A TDRS-B TDRS-C TDRS-D TDRS-E TDRS-F TDRS-G TDRS-H TDRS-I TDRS-J TDRS-K TDRS-L TDRS-M Launch Date Spacecraft Name After Acceptance First-Generation TDRS April 4, 1983 TDRS..., 1988 TDRS-3b March 13, 1989 TDRS-4a August 2, 1991 TDRS-5c January 13, 1993 TDRS-6c July 13, 1995 TDRS-7c Second-Generation TDRS June 30, 2000 TDRS-8 March 8, 2002 TDRS-9 December 4, 2002 TDRS-10 Third-Generation TDRS January 30, 2013 TDRS-11b January 23, 2014 TDRS-12d e 2020s TDRS... 1 year 0 year N/A a TDRS-1 was decommissioned in October 2009 while TDRS-4 was decommissioned in December 2011. TDRS-3 and 11... operating beyond their design life. d TDRS-L is in on-orbit testing... SCaN Program has initiated the TDRS Replenishment Project and the Space... Segment Sustainment (SGSS) Project. The TDRS Replenishment Project purchased three third... the Space Network’s ground systems. TDRS Replenishment Project. To avoid a system... of their useful lives. The TDRS Project Office, located at Goddard... 2 for an illustration of TDRS-L. Figure 2. Illustration of TDRS-L Source: NASA. 11... exercised the option to purchase TDRS-M for $320 million, but due... to purchase TDRS-N for $262 million. NASA launched TDRS-K (now TDRS-11) in... storage. NASA launched TDRS-L in January 2014. The TDRS Project Office plans... capacity until the second-generation TDRS begin retiring in the early... first, second, and third-generation TDRS, something only the White Sands... will be unable to launch TDRS-M until 6 years later than originally... exercise the option to purchase TDRS-N at a favorable cost under its... Needed to Maintain Constellation of TDRS Spacecraft The Space Network needs... study predicts at least six TDRS will continue to operate through... Network will expand to seven TDRS providing customer service for as.... Moreover, the study indicates that TDRS-3, which is already operating 15... exercise the option to purchase TDRS-N from Boeing at the favorable... of TDRS Fleet’s Anticipated Availability to Meet Space Network Requirements TDRS 5 TDRS 6 TDRS 7 2016 ▲ ▲ ▲ 2017 ▲ 2018 ▲ TDRS 9 TDRS 10 TDRS 11(K) ▲ TDRS 12(L) TDRS M Meets 2014 TDRS 8 2015... 2024 ▲ 2025 ▲ - - - -- - - - - -Does Not Meet - - - - - - - - - TDRS 3 Key ▲ Predicted end of life... each below. TDRS-K (11). Boeing was ready to launch TDRS-K by the... 2012. As a result, Boeing stored TDRS-K for an extra month beyond....16 Following launch, testing of TDRS-K (now TDRS-11) was completed in... storage until needed. TDRS-L (12). Boeing completed development of TDRS-L in April..., in November 2013, while building TDRS-M, Boeing discovered quality problems with... accelerated life test on the TDRS-M units and concluded they posed... replace the divider units on TDRS-L and proceeded with the launch... performing on-orbit testing of TDRS-L. Once the Network accepts delivery... on the TDRS-M. TDRS-M. NASA exercised the option to purchase TDRS-M in 2011... devices failed while in orbit, TDRS telecommunications services could be affected... cost implications of extended storage. TDRS-N. NASA did not pursue its... the Boeing contract to purchase TDRS-N for $262 million because, according... an additional antenna and associated TDRS service capability. When funds become... management of the Space Network, TDRS, and SGSS projects. For this... data. In addition, we reviewed TDRS planned schedules and NASA’s reimbursable...



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0.13/5
... and Space Administration media kit TDRS-K tracking and data relay satellite... the TDRS-K launch, check: www.nasa.gov/tdrs Media Services Information TDRS-K Briefings... and Data Relay Satellite-K, or TDRS-K, aboard a United Launch Alliance Atlas..., Denver, Colo. • Jeffrey Gramling, NASA TDRS-K project manager, Goddard Space Flight.... 30: Media will cover the TDRS-K launch from Kennedy's Press Site..., NASA Television will carry the TDRS-K prelaunch news conference and mission... 6:15 p.m. and conclude after the TDRS-K spacecraft has separated from the... state-of-health of the TDRS-K spacecraft is known. Spokespersons also....gov A prelaunch webcast for the TDRS-K mission will be streamed on... more about the TDRS-K mission, visit: www.nasa.gov/tdrs Social Media... follow the TDRS-K mission online by using the hashtag #TDRS on Twitter... https://www.facebook.com/NASA.TDRS Throughout the launch countdown, Kennedy... at Kennedy's Press Site. The TDRS-K Launch NASA's Space Communications and..., is responsible for the TDRS network. The TDRS spacecraft project is managed... information on the TDRS-K mission, visit: www.nasa.gov/tdrs Atlas V Launch... Relay Satellite, a spacecraft known as TDRS-K, into orbit. Sometimes, this selection.../centers/kennedy/launchingrockets/index.html TDRS-K Quick Facts The Tracking and Data Relay Satellite (TDRS) Project is providing follow-on... to build three additional TDRS spacecraft, known as TDRS-K, L, and M, was awarded... in January 2013 and TDRS-L in 2014. TDRS-M's launch readiness date is... one additional spacecraft, TDRS-N. In addition to building the TDRS-K, L, and M spacecraft... support these new spacecraft. The TDRS Project was established in 1973...-orbit test and calibration of TDRS spacecraft. There have been four procurements of TDRS spacecraft, which include the Basic Program (TDRS-F1-F6), the Replacement Program (TDRS-F7), the TDRS-H,I,J Program, and the TDRS-K, L, M Program. TDRS Flight 7 was... Challenger. The first seven spacecraft (TDRS-F1-F7) are referred to... the K, L, M series the Third Generation. TDRS-F1-F7 spacecraft were built... Segundo, Calif., built the TDRS-F8F10 (H, I, J) spacecraft. The TDRS system (TDRSS), also... Network, consists of the onorbit TDRS telecommunications spacecraft stationed at geosynchronous positions and the associated TDRS ground terminals located at White...’s Earth Observing Fleet. As such, TDRS is a critical agency resource. This... replenish NASA’s Space Network. The TDRS Project Office at Goddard Space Flight Center manages the TDRS development effort. The Space Network...: During the launch configuration, the TDRS-K spacecraft measures 320.5 inches from... omni antenna. When deployed the TDRS-K spacecraft spans 829 inches from... solar eclipses. Spacecraft Payload: The TDRS spacecraft is comprised of two... the communications systems payload. The TDRS spacecraft uses the Boeing Space... Mbps. Originally established on the TDRS H, I, & J spacecraft, the Ka-band frequencies... and mission data communication services, TDRS-K will continue to provide tracking... in Dongara, Australia. Cost: The TDRS-K and L spacecraft and the White.... TDRS Operational Locations: TDRS-1: Retired TDRS-2: Lost Aboard the Space Shuttle Challenger TDRS-3: In... the Northeast Coast of Brazil TDRS-4: Retired TDRS-5: In service, currently located... the Phoenix Islands TDRS-6: On orbit, currently in storage TDRS-7: In service... in the Indian Ocean Region TDRS-8: In service, currently located in the Indian Ocean Region TDRS-9: In service, currently located at... the Northeast Coast of Brazil TDRS-10: In service, currently located... Ocean above the Phoenix Islands TDRS-K Illustration NASA’s Space Network Milestones... 2002 December 4, 2002 December 2007 TDRS Project is established White Sands... the Kennedy Space Center. First TDRS customer support occurs with Landsat... communications support occurs through TDRS-1 Launch of TDRS-2 aboard STS-51L from... TDRS-3 aboard STS-26 from the Kennedy Space Center Dual TDRS-1 and TDRS-3 support begins Launch of TDRS-4 aboard STS... data loss. NASA established temporary TDRS capability in Canberra, Australia Second... Atlas IIA from Cape Canaveral TDRS-1 support first telemedicine procedure from... to develop the third generation TDRS spacecraft June 2010 November 2011 March 2012 January 2013 TDRS-1 Decommissioned First of two options... the development of TDRSM. TDRS-4 Decommissioned TDRS-K is scheduled for Launch Program... disseminate the satellite data. The TDRS Project Office at Goddard Space Flight Center manages the TDRS acquisition and development. The Space... Communications and Navigation William Marinelli, TDRS Program Executive Space Communication and... Center (TDRS Project Office) Jeff Gramling, TDRS Project Manager David Littmann, TDRS Deputy Project Manager Gifford Moak, TDRS Deputy... Manager for Resources Robert Buchanan, TDRS Deputy Project Manager for Technical...



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0.14/5
... Walls Abstract Transferable development rights (TDRs) are a market-based approach to... summarizes the economics literature on TDRs and describes a long-running program... considering TDR programs. Key Words: TDRs, zoning, sprawl, farmland preservation, easements... Introduction ............................................................................................................................. 1 The Economics Literature on TDRs ..................................................................................... 2 TDRs in Calvert County, Maryland...................................................................................... 5 Background... a system of transferable development rights (TDRs). In most communities, local zoning... dwelling units per acre. With TDRs, property owners can transfer these... environmental and natural resource policies, TDRs have the virtue of being... development choices across property owners, TDRs should lead to outcomes in... with the greatest development values. TDRs also have the virtue of..., I summarize the economics literature on TDRs and describe a long-running TDR... programs. The Economics Literature on TDRs Mills (1980) was the first to analyze TDRs in a theoretical model.1 In a nonspatial... its owner. He shows that TDRs preserve the gains-equalizing feature..., regardless of the choice of i. TDRs can also correct for general... surrounding residents—Mills shows that TDRs alone will not produce a socially... space. Mills shows that if TDRs are coupled with zoning, however...) set up a similar framework for TDRs, one in which all landowners...’s to show a potential downside to TDRs: they can increase overall development... absence of the regulations. With TDRs, those unconstrained property owners sell...-induced sprawl. The authors introduce TDRs into this setting and use... the few empirical studies of TDRs using the Calvert County individual... econometrically estimate the demand for TDRs as a function of underlying zoning... areas. The economics literature on TDRs is somewhat limited. The theoretical models tend to conclude that TDRs are preferred to uniform zoning... program in Calvert County, Maryland. TDRs in Calvert County, Maryland Background... preservation where landowners could sell TDRs for use elsewhere—and ―receiving... to either sell TDRs from their properties or use TDRs on their... county certifies the number of TDRs assigned to the property, typically... over time, with and without TDRs, across the different zoning classifications... built on a given acreage. Using TDRs in the residential and town... Limits and Density Allowed with TDRs, Calvert County, MD Rural Residential... 1978–1998 Base density Density w/TDRs 1999–2003 2003–present**** Base density Density w/TDRs 1 du/10 ac 1 du/4 ac... 1 mile of a town center, with TDRs; density in residential zones can... 1 mile of a town center, with TDRs. **** A new zoning ordinance took effect... original density through purchase of TDRs. In 2003, the county repeated... preserved through the sale of TDRs.6 Acreage preserved has steadily risen... Average price Developers who purchase TDRs use them to increase development... areas. The county requires five TDRs for each additional unit built..., both subdivisions with and without TDRs. Moreover, proximity to the Baltimore... the demand by developers for TDRs as a function of underlying zoning... subdivisions were built with TDRs. In addition, TDRs were increasingly used in... number of TDRs sold and total money spent on TDRs in three... sold per year Expenditures on TDRs (2011$) Avg. expenditures per year... should shift the demand for TDRs outward, all else equal. However... by purchasing and retiring some TDRs each year. A fixed price is... an active private market for TDRs and as a result has permanently... beyond the baseline density limits, TDRs are now adding approximately $30... who have already sold some TDRs and thus have a permanent easement... for development and still retain TDRs in proportion to the original... developers and others have bought TDRs from landowners but have yet... that objective more efficiently with TDRs than with a uniform zoning regulation... adequate demand and supply of TDRs to the marketplace. This means... a greater monetary gain from selling TDRs and preserving their land than... a demand for additional density and TDRs. The Calvert County program succeeded... is another potential problem with TDRs. In a new created market with.... Probably the biggest hurdle for TDRs is the administrative burden for... market for development rights, then TDRs have much to recommend them... Walls downzoning and with PDRs, TDRs accommodate growth rather than slowing... achieving land preservation goals through TDRs. But as the Calvert County... may arise as a program matures? TDRs are not like tradable emissions... irreversible. All economic analyses of TDRs thus far have been static... needed to better understand whether TDRs are a useful policy instrument for.... Levinson, Arik. 1997. Why Oppose TDRs?: Transferable Development Rights Can Increase..., and Elizabeth Kopits. 2006. Zoning, TDRs and the Density of Development...



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0.15/5
... IDIQ NPD NPR OIG SCaN TDRS TDRSS Code of Federal Regulations... Tracking and Data Relay Satellites (TDRS) in geosynchronous orbits 1 around Earth... the first of 10 satellites, TDRS-1, in 1983, and the newest... the system, TDRS-10, in 2002. 2 The existing TDRS fleet is aging... develop two new tracking satellites, TDRS K and L, 3 and to make associated... station. Expected launch dates for TDRS K and L are 2012 1 A geosynchronous orbit... the Earth). 2 TDRS-1 was decommissioned in 2009. The second TDRS satellite was... launch, TDRS K and L will be known as TDRS-11 and TDRS-12, respectively... taken steps to ensure that TDRS K and L were on schedule, within... in order to obtain the TDRS contract and subsequently had increased... in Appendix A. Results Development of TDRS K and L is on schedule and... found that NASA managed the TDRS K and L Project within established cost... Space Network Office and the TDRS Project Office appropriately awarded, administered... conditions. 5 For the Boeing contract, TDRS Project personnel and on-site... Background _________________________________________ 1 Objectives __________________________________________ 3 RESULTS TDRS Project Management Implemented Effective Management... TDRSS satellite – TDRS-1 – in 1983, and the most recent – TDRS-10 – in... Date Spacecraft Name Before Launch TDRS-A TDRS-B TDRS-C TDRS-D TDRS-E TDRS-F TDRS-G TDRS-H TDRS-I TDRS-J Launch Date April 4, 1983 January... Name After Launch TDRS-1a TDRS-3b TDRS-4 TDRS-5 TDRS-6 TDRS-7 TDRS-8 TDRS-9b TDRS-10 a TDRS-1 was decommissioned on... completed in June 2010. b TDRS-3 and TDRS-9 are in on-orbit storage... outlasted design expectations. For example, TDRS-1 was in orbit for 26... two next-oldest satellites, TDRS-3 and TDRS-4, have been in orbit for... process to build and deploy TDRS K and L. In order to address... delivery of two new satellites, TDRS K and L. Also included in the.... The planned launch dates for TDRS K and L are 2012 and 2013.... However, according to the TDRS Project Manager, once TDRS K and L become operational... delivery of two additional satellites, TDRS M and N. Objectives The overall objective... whether NASA was managing the TDRS K and L Project in order to... mitigated; • NASA adequately administered the TDRS K and L development and support services... had bid low on the TDRS K and L contract in order to... 3 RESULTS TDRS PROJECT MANAGEMENT IMPLEMENTED EFFECTIVE MANAGEMENT PROCESSES Development of TDRS K and... technical requirements and that the TDRS Project Office executed a project plan... services provided by a ground terminal. TDRS Project Requirements Were Effectively Executed As of May 2010, the TDRS K and L Project was meeting technical... schedule and within budget. The TDRS Project Office effectively executed the... risk management plans for both TDRS K and L, and provides the scope... the TDRSS Program and the TDRS K and L Project, in accordance with... Agreement), 10 which establishes the TDRS K and L launch delivery dates of..., respectively. NASA awarded Boeing the TDRS Project contract on December 28... design, development, and launch of TDRS K and L with launch dates of... the requirement, management developed the TDRS K Surveillance Plan, effective April 16... 8 months prior to launch of TDRS K. As of September 2009, the... may become evident between TDRS K and L and previous TDRS. Earned Value Management... its EVM systems. Boeing provided TDRS 6 REPORT NO. IG-10-023... The Space Network Office and TDRS Project Office appropriately awarded, administered... the development and delivery of TDRS K and L. The target price 16... the development and delivery of TDRS K and L and modifications to the.... The planned launch dates for TDRS K and L are 2012 and 2013... up to $10 million if TDRS K is launched prior to December... options for two additional spacecraft, TDRS M and N. If all options are... the contractor’s performance. Furthermore, because TDRS K and L are not significantly different...’s performance in developing and delivering TDRS H, I, and J made it advantageous to... a spacecraft emulator anomaly aboard the TDRS-9 spacecraft recommended the modification for... officials to determine that the TDRS K and L Project Plan was effectively... reviewed the TDRS K Program Commitment Agreement, which provides the TDRS K and L launch... dates provided in the Boeing TDRS K contract, dated December 28, 2007... quarterly status reports from the TDRS K Project Office and Boeing and... and compared it to the TDRS K Project documents, NASA Procedural Requirements... practices to determine that the TDRS K Project implemented effective risk and... was effective administration of the TDRS K design and development and support.... As of June 2009, the TDRS Project Office comprised 72 positions... Office of Procurement reviewed the TDRS K Project using NASA Policy Directive... use excess C-band capacity from TDRS-4 and TDRS-5. Columbia, in turn, leased... Administrator for Procurement Project Manager, TDRS Project Manager, Space Network Project...



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0.03/5
... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT NOTES 2 ASCENT... S T S DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT NOTES 15... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT NOTES FCMS.../NIGHT ORBIT 24 W -171 E -46 TDRS Z -275 ORB ATT SSRMS NOTES.../NIGHT ISS DAILY ORBIT AVAIL TDRS ETCS-LPA TRRJ-LOCK SDMS... S T S DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS NOTES.../NIGHT ISS DAILY ORBIT AVAIL TDRS S B D K U M C C 01 23 19 02 08... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS 16.../NIGHT ISS DAILY ORBIT AVAIL TDRS MSS-P/U C&T-VIDEO-CNFG CCS-TLM... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS 04.../NIGHT ISS DAILY ORBIT 6 AVAIL TDRS S B D K U M C C R S P L PPS-P6 PVR-RETRACT SSRMS... S T S DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS NOTES.../NIGHT ISS DAILY ORBIT AVAIL TDRS 12 14 K U M C C 07 08 09... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS NOTES.../NIGHT ISS DAILY ORBIT AVAIL TDRS S B D K U M C C 6 19 01 23 02 08... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS 72.../NIGHT ISS DAILY ORBIT AVAIL TDRS S B D K U M C C R S P L 12 14 06 07 08... S T S DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS NOTES.../NIGHT ISS DAILY ORBIT AVAIL TDRS S B D K U M C C R S P L ACS-CMG DATA-DUMP ACS... (8.5) DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS NOTES.../NIGHT ISS DAILY ORBIT AVAIL TDRS ACS-CMG DATA-DUMP ACS.../NIGHT ORBIT 95 W -171 E -46 TDRS Z -275 ORB ATT SSRMS NOTES.../NIGHT ISS DAILY ORBIT AVAIL TDRS S B D K U M C C ACS-CMG DATA-DUMP PPS... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS NOTES.../NIGHT ISS DAILY ORBIT AVAIL TDRS 12 06 07 08 09... S T S DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS NOTES.../NIGHT ISS DAILY ORBIT AVAIL TDRS S B D K U M C C R S P L ETCS-LPB TRRJ-AUTO VDS... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS NOTES.../NIGHT ISS DAILY ORBIT AVAIL TDRS S B D K U M C C SPS-PWRDOWN ACS-INH-AUTO... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT SSRMS NOTES.../NIGHT ISS DAILY ORBIT AVAIL TDRS S B D K U M C C IMV-ACT RPD DPRS-DIS... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT NOTES 135.../NIGHT ISS DAILY ORBIT AVAIL TDRS C&T-UHF-ACT ACS-CMG DATA... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT 01 03... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT GND NOTES... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT GND NOTES... DAY/NIGHT ORBIT W -171 E -46 TDRS Z -275 ORB ATT GND NOTES... site and TDRS events. The TDRS band reflects the three TDRS satellites that... (unshaded bars) as well as TDRS SHO schedule (solid bars). The... on each respective pass. Shuttle TDRS Support: East (-46°), West (-171..., CTS, VTS, and NHS ISS TDRS Support: East (-46°), West (-174... Ku downlink time. Note that TDRS Z does not have the capability... downlink or playback on either TDRS E or W. TDRZ cannot be used...



Дата загрузки: 2017-06-14
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0.08/5
... I NASA/Tony Gray-Sandy Joseph TDRS-L lights up the night on... and Data Relay Satellite, or TDRS-L, to Earth orbit. Liftoff was.... 27, 2014 SPACEPORT NEWS Page 3 TDRS-L safely in geosynchronous orbit By... Relay Satellite-L (TDRS-L), the 12th spacecraft in the agency’s TDRS Project, is... tests before putting TDRS-L into service. “TDRS-L and the entire TDRS fleet provide...,” said NASA Administrator Charles Bolden. “TDRS also will support the first... For more information about TDRS, visit: http://tdrs.gsfc.nasa.gov To... years.” The mission of the TDRS Project, established in 1973, is...-rate communications. The TDRS-L spacecraft is identical to the TDRS-K spacecraft launched... every day,” said Jeffrey Gramling, TDRS project manager at NASA’s Goddard... Flight Center, Greenbelt, Md. The TDRS fleet began operating during the... the launch of TDRS-1 in 1983. Of the 11 TDRS spacecraft placed... and Intelligence Systems completed the TDRS-L integration and testing at its... arrived in Florida on Dec. 6. TDRS-M, the next spacecraft in this... network. The TDRS Project Office at Goddard manages the TDRS development program... of the launch service for TDRS-L is the responsibility of HEOMD...



Дата загрузки: 2017-06-15
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0.1/5
... rights (PDRs), transferable development rights (TDRs), and development impact fees. The... on land use, such as TDRs, with input-based taxes. More... rights (PDRs), transferable development rights (TDRs), and development impact fees—are.... We focus particular attention on TDRs, an incentive-based approach similar... land use policies such as TDRs. 1 Bockstael and Bell (1998) show... easements (PACE); transferable development rights (TDRs); and development impact fees. Both PDRs and TDRs use conservation easements—deed restrictions... landowner and retires them; with TDRs, private developers (and others) may..., and Baltimore. 2. Transferable development rights TDRs transfer development from one property... increase development on another property. TDRs are bought and sold in...).10 This conceptual description of TDRs is, in principle, like a tradable... out an additional advantage of TDRs over straight zoning. He argues... areas are “receiving areas” where TDRs can be used to increase... beyond the baseline zoning. Since TDRs rely on the private market... be both a reliable supply of TDRs by landowners willing to sell... acre without the purchase of TDRs—is perceived as being acceptable... make the cost of using TDRs too high, requiring developers to... higher density by rights when TDRs are used. In some areas... the higher density allowed with TDRs.11 There are some potential... achieved through the use of TDRs. Secondly, down-zoning properties in... area can boost demand for TDRs and, at the same time... still be some drawbacks to TDRs, however. TDRs allow any landowner in... identify such properties ex ante, TDRs are made available to all...).12 In the case of TDRs, this problem raises the cost... under a straight zoning policy. The TDRs landowners sell are used to... developed anyway are now selling TDRs, more development is occurring in..., 1997). Another potential problem with TDRs is the possibility that the... number of potential sellers of TDRs, then those developers may have... of the program. In practice, TDRs have met with only limited... very low density, or sell TDRs based on the earlier density... the additional option of using TDRs and developing their properties at... number of articles written about TDRs exceeded the number of development... the sale of TDRs.17 An average of 540 TDRs were sold... prices and other information about TDRs have helped to stabilize the... features that economists praise about TDRs in theory: specifically, most landowners... same effects, in theory, as TDRs. Both instruments act like a tax... preservation of open space than TDRs, however. Legally, the fees can... Future Walls and McConnell 1. TDRs and PDRs TDRs can be an efficient... is of central concern, however, TDRs need to be modified or... want to rely purely on TDRs to achieve that outcome. This... property. In the language of TDRs, they could be given higher... market-based mechanisms such as TDRs that worries some environmentalists and... transaction costs associated with using TDRs. Even a simple adjustment such as... of the TDR approach. Using TDRs to protect water quality in.... In fact, impact fees and TDRs, as we mentioned above, can... that impact fees have over TDRs is that they may allow... to the point that PDRs, TDRs, development impact fees, and other...-cost outcome as long as TDRs are combined with an input... model, they find that combining TDRs with input taxes is best... the least-cost solution, while TDRs alone do not. The Sanchirico... realworld scenarios. The way that TDRs are modeled in the Sanchirico... the way that TDRs work in practice. In reality, TDRs are used... protection, any thoughts of using TDRs to also achieve water quality... three of these policies here—TDRs, PDRs, and 23 Resources for... them is without some shortcomings. TDRs can be used to maintain... than a more dispersed development pattern. TDRs can also be used to... Levinsohn, Arik. 1997. “Why Oppose TDRs?: Transferable Development Rights Can Increase...



Дата загрузки: 2017-09-24
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0.05/5
... some activities. Some work on TDRS-6 was moved to FY 1992... support additional requirements in the TDRS replacement and STGT programs, which... start of development in the TDRS II program (formerly the Advanced... reduction of $65.0 million for TDRS II and a general reduction of... additional spacecraft to replace the TDRS lost in the Challenger accident... a transfer of funds to the TDRS Replacement budget category and to... reduction following the checkout of TDRS-4 on orbit and the deferral... and test activities planned for TDRS-5 and TDRS-6. In addition, the White... the suspended procurement of the TDRS II replenishment spacecraft. As directed... Services (new budget category), TDRS Replacement Spacecraft, TDRS Replenishment Spacecraft, and the.... MS funding included TDRSS, TDRS Replacement Spacecraft, TDRS Replenishment Spacecraft, and the... Data Relay Satellite (TDRS) Replenishment.” To augment funding for TDRS Replenishment (which... a transfer of funds to the TDRS Replacement and to accommodate a portion... reduction following the checkout of TDRS-4 on orbit and the deferral... and test activities planned for TDRS-5 and TDRS-6. In addition, the White... to the acceleration of the TDRS-6 contract. 486 The decrease of.... T - 226 Data Book 8 - Tables Table 4-8. TDRS Replacement Spacecraft Funding History (in... readiness date of the replacement TDRS from December 1991 to December... with new power amplifiers for TDRS-7 that were required due to... amplifiers used in the previous TDRS. 506 The increase of $9.7 million... with new power amplifiers for TDRS-7 that were required due to... amplifiers used in the previous TDRS. 507 The decrease of $10... integration and test (I&T) phase of TDRS-7 to a later period. The restructuring... the TDRSS program during the TDRS-6 launch activities. FY 1993 activities.... T - 227 Data Book 8 - Tables Table 4-9. TDRS Replacement Spacecraft Launch Services Funding... from MS appropriation. 512 The TDRS-7 deployment in August 1995 was... Book 8 - Tables Table 4-11. Advanced TDRS (ATDRS)/Tracking and Data Relay... and Data Relay Satellite II (TDRS II). The decrease of $8.3 million... to a delay in starting the TDRS II development contract, which had... and subsequent cancellation of the TDRS II procurement. The procurement of... led to the cancellation of TDRS II and the initiation of... Data Book 8 - Tables Table 4-12. TDRS Replenishment Spacecraft Funding History (in... Successor to the canceled ATDRS/TDRS II program. Funding was to... to initiate the development of TDRS-8 through TDRS-10 to ensure continuity... to reduce funding for the TDRS replenishment spacecraft by $60 million... latest contract negotiation of the TDRS Replenishment program and $5.0 million was available from the FY 1995 TDRS Replacement program following the successful launch of TDRS-7. The remaining reduction of $4.6 million... Data Book 8 - Tables Table 4-13. TDRS Replenishment Launch Services Funding History... multimission communications network servicing all TDRS-compatible Earth-orbiting missions. It... the delay in the new TDRS resulting from the Challenger accident and loss of TDRS-B. T - 257 Data Book 8 - Tables Station... SAR mapping of Antarctica. Used TDRS relay, which supported serial clock... data between KSC projects and TDRS • Two teltrac and quad helix... science data to WSGT via TDRS Svalbard Satellite Station (Norway) SvalSat... 150 m (492 ft) 3 sigma Source: “TDRS/TDRS H, I, J Baseline Service Comparison,” http://msp... Data Book 8 - Tables Table 4-37. TDRS-4 (TDRS-D) Characteristics Launch date Launch vehicle... system spares666 To deliver a third TDRS satellite to stationary geosynchronous orbit... as TDRS-East. The combination of TDRS-1 and TDRS-4 provided Remarks the TDRS-West..., “Tracking and Data Relay Satellite TDRS-E,” Mission Operation Report, Report No... Data Book 8 - Tables Table 4-38. TDRS-5 (TDRS-E) Characteristics Launch date Launch vehicle... system spares670 To replace TDRS-3 by delivering a fourth TDRS satellite to stationary... of on-orbit experience with TDRS-3, this spacecraft was modified to..., “Tracking and Data Relay Satellite TDRS-E,” Mission Operation Report, Report No..., “Tracking and Data Relay Satellite TDRS-E,” Mission Operation Report, Report No... Data Book 8 - Tables Table 4-39. TDRS-6 (TDRS-F) Characteristics Launch date Launch vehicle... system spares675 To deliver a fifth TDRS satellite to stationary geosynchronous orbit..., “Tracking and Data Relay Satellite TDRS-E,” Mission Operation Report, Report No..., DC. (No TDRS-F MOR available.) The program objectives for TDRS-F remained the... (accessed September 19, 2006). 678 “TDRS-F,” NSSDC Master Catalog, http://nssdc... Data Book 8 - Tables Table 4-40. TDRS-7 (TDRS-G) Characteristics Launch date Launch vehicle... system spares679 To deliver a sixth TDRS satellite to stationary geosynchronous orbit... The satellite was a replacement for TDRS-B, which was destroyed on Challenger..., “Tracking and Data Relay Satellite TDRS-E,” Mission Operation Report, Report No..., DC. (No TDRS-G MOR available.) The program objectives for TDRS-G remained the...



Дата загрузки: 2017-09-24
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0.09/5
... Tracking and Data Relay Satellite (TDRS)-3 experienced an unexpected thrusting event... supporting elements in recovery from a TDRS contingency situation. The main emergency to address is when a TDRS has experienced uncommanded, unreported, or.... A Tracking and Data Relay Satellite (TDRS) is controlled through the White...) at GSFC is responsible for TDRS orbit determination (OD) and prediction. This paper presents a definition of TDRS contingency, a discussion of the roles... type described in Section 4.1using a TDRS-8 drift maneuver as a testing opportunity... controlling agencies is that the TDRS spacecraft health and service to... can face. 1.1 TDRS-3 Anomaly On March 22, 2006, TDRS–3 had an Emergency... the ETO review team, Table 1. TDRS-3 2006 Anomaly 3/22 3/22 Time... were unusable due to thrusting. TDRS-3 returned to normal mode, S-band... and stay in the box TDRS-3 emergency terminated The FDF found... after the return of the TDRS to normal mode. The investigation... the data and updating the TDRS-3 orbit at approximately 2100 UTC on March 23. 1.2 TDRS-5 Anomaly At 0420 UTC on July 10, 2007, TDRS-5 experienced what appeared to be... spacecraft control was reestablished, and TDRS-5 was brought back to operational support. Table 2. TDRS–5 2007 Anomaly Date Time (UTC... ETO, customer support transferred to TDRS-6 Sun Acquisition Mode Earth Acquisition.../day. Compared with the earlier TDRS-3 anomaly, the loss of control... was much less severe. Also, TDRS-5 is located such that there... from the TDRS-3 anomaly. 2. Definition of Contingency A TDRS contingency occurs whenever a TDRS is... (Reference 1). This can occur when a TDRS tumbles, has divergent attitude, or... uncontrolled thrusting. WSC will declare a TDRS emergency when such an event... contingency definition is limited to TDRS tracking and control and does... approaches. During such contingencies, the TDRS operational modes progress from loss... are outlined in Table 3. Table 3. TDRS Operational Modes Mode Tumble (attitude..., full commanding and operational support. A TDRS could be in normal operations... amount of time any given TDRS spends in a mode outside of... response to a TDRS contingency is based on the TDRS status (whether the... facilities is requested if the TDRS has drifted out of view... service interruption becomes protracted. Figure 1. TDRS Visibility and S-band Trackers 2 2 Adapted... to acquire and track the TDRS, to provide valid tracking data... achieving the return of the TDRS to operational support is not..., Australia Antenna(s) MILA AGO3 Approximate TDRS Visibility West, East East DS15... Each organizational entity involved in TDRS support has its own set... responses expected to various TDRS contingencies. Table 5. TDRS Contingency Mode Responses Mode... a day in Sun Mode) Maneuver TDRS to retain/resume assigned slot... support Continue coordination Track the TDRS Provide valid tracking data to... station tracking. 3.2 Ground Station Availability TDRS tracking of a BRTS transponder requires... space–to–ground link. Once a TDRS transitions to S-band up during.... These sites and the current TDRS locations are shown in Figure... by performing orbit support using TDRS-8 data from its recent repositioning... the routine provision of TDRS data. The initial TDRS-8 drift stop maneuver... simulate an unreported thrusting by a TDRS. The tracking data arc between... of information on the postburn TDRS orbit. Various techniques to force... Response to Losing Contact with TDRS–West (TDW) Simulation Coordinator Give... Simulation Start (S) WSC Operations Declare TDRS emergency Supervisor WSC Operations Contact... to provide tracking support for a TDRS during an emergency. The steps... appropriately to a TDRS anomaly is important for maintaining the TDRS spacecraft health... continued service to users, as TDRS anomalies continue to be experienced about once a year. Simulating a TDRS emergency provides an opportunity to... the risk that a future severe TDRS anomaly will take as long to resolve as did the TDRS-3 anomaly in March 2006. WSC... not, as yet, held a coordinated TDRS contingency simulation. The challenge is...