Спутник ФКИ. GRAIL. [Редактировать]

10.09.2011 в 17:08 мск с космодрома Канаверал /штат Флорида/ с помощью ракеты- носителя Delta-7920H-10C были запущены два зонда для исследования Луны GRAIL A (Discovery 11A) и GRAIL B (Discovery 11B). Программа полета. Оба зонда-"близнеца" GRAIL, запущенных в субботу с мыса Канаверал, успешно отделились от второй ступени ракеты-носителя Delta II, раскрыли солнечные батареи и вышли на расчетную траекторию. Чтобы достичь Луны, двум аппаратам GRAIL (Gravity Recovery and Interior Laboratory) потребуется около четырех месяцев пути по специальной "энергосберегающей" траектории.

После достижения Луны зонды будут лететь друг за другом в течение 82 дней на высоте около 55 километров по полярной орбите вокруг Луны. Измеряя расстояние между аппаратами, которое будет меняться по мере того, как они проходят лунные гравитационные аномалии, ученые построят гравитационную карту спутника и получат представление о внутреннем строении Луны. Задачи миссии. Миссия GRAIL является частью программы NASA Discovery. GRAIL– крупный научно- исследовательский проект NASA по изучению недр Луны от коры до ядра. Два зонда- близнеца составят гравитационные карты земного спутника, которые позволят судить о его внутреннем строении и составе, а также получить представление о его тепловой эволюции, то есть периодах нагрева и остывания, что необходимо для лучшего понимания происхождения и развития. Точные гравитационные карты также станут неоценимой помощью в навигации будущих лунных космических станций. Как отметила научный руководитель миссии Мария Зубер (Maria Zuber), сегодняшние технологии позволяют определять расстояние между аппаратами с точностью до нескольких микрометров — «меньше диаметра красной кровяной клетки человека». Конструкция

Технические характеристики

#ХарактеристикаЗначение
1Масса (системы), кг960
2Количество аппаратов, шт.2

Характеристики орбиты

#ХарактеристикаЗначение
1Расчетный срок функционирования, месяц11

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Прогнозируемая стоимость (проекта), млн. долл.2009-01-01496.2
2Прогнозируемая стоимость (формулировки проекта), млн. долл.2009-01-0150.5
3Прогнозируемая стоимость (разработки), млн. долл.2009-01-01427.0
4Прогнозируемая стоимость (работы с аппаратом), млн. долл.2009-01-0118.7
5Прогнозируемая стоимость (проекта), млн. долл.2011-01-01496.2
6Прогнозируемая стоимость (формулировки проекта), млн. долл.2011-01-0150.5
7Прогнозируемая стоимость (разработки), млн. долл.2011-01-01427.0
8Прогнозируемая стоимость (работы с аппаратом), млн. долл.2011-01-0118.7
9Прогнозируемая стоимость (проекта), млн. долл.2012-01-01487.2
10Прогнозируемая стоимость (формулировки проекта), млн. долл.2012-01-0150.6
11Прогнозируемая стоимость (разработки), млн. долл.2012-01-01398.3
12Прогнозируемая стоимость (работы с аппаратом), млн. долл.2012-01-0138.3

Каталог

#Наименование Масса, кг ×Дата пуска ×Ракета-носитель ×Космодром ×Страна операторСтрана производительТип
1Gravity Recovery And Interior Laboratory-A (GRAIL)1322011-09-10Дельта 2Мыс КанавералСШАСШАКА ФКИ
2Gravity Recovery And Interior Laboratory-B (GRAIL)1322011-09-10Дельта 2Мыс КанавералСШАСШАКА ФКИ

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The Quest of the Holy Grail translated by W. W. Comfort In parentheses... Arthurian 2 Quest of the Holy Grail romances, their origin and development... mysterious vessel called the Holy Grail, which came to be the... the significance of the Holy Grail as revealed in the present... authors who had presented the Grail as an object of search... so mystically associated with the Grail itself. Our author is not... the Grail as a tangible object. He is interested in the Grail as... behold it. To him the Grail symbolises God, and the search... as 3 Quest of the Holy Grail protagonist in this new spiritual... are 4 Quest of the Holy Grail GodÕs ministers set to interpret... 1200. 5 Quest of the Holy Grail How powerfully this portrayal of... forest. 7 Quest of the Holy Grail There they struck into the.... And 8 Quest of the Holy Grail when he had done everything... these 9 Quest of the Holy Grail words before the arrival of... the adventures of the Holy Grail, never was such a joyous reception... the Holy Grail; and they 13 Quest of the Holy Grail knew... 18 Quest of the Holy Grail descended from the best knights... beasts, there entered the Holy Grail covered with a white cloth; but... the Holy Grail learned the truth concerning the Holy Grail, if he..., 29 Quest of the Holy Grail Òyou tell me a marvellous thing...,Ó 30 Quest of the Holy Grail Galahad replied. Then he mounted... a 34 Quest of the Holy Grail numerous company of Christians. The... 40 Quest of the Holy Grail thanks,Ó said Melyant; Ònow I ask... here: I must seek the Holy Grail whose Quest I have undertaken.Ó ÒWhat... the adventures of the Holy Grail. And Galahad besought Melyant so... 46 Quest of the Holy Grail who greeted him courteously. Saluting... 47 Quest of the Holy Grail been unhorsed remounted their steeds... the Quest of the Holy Grail.Ó ÒSire,Ó said the squire, ÒI have... the place where the Holy Grail reposed? Get thee hence, for... he had beheld the Holy Grail without stirring in its presence... your experience with the Holy Grail.Ó Then he told him and... 69 Quest of the Holy Grail seeking him. ÒBecause,Ó he replied... the presence of the Holy Grail virgin, pure, and without a taint....Ó 76 Quest of the Holy Grail ÒUpon my faith,Ó said Perceval... desired to behold the Holy Grail openly, drew nearer than he... 92 Quest of the Holy Grail knights and champions who would... 96 Quest of the Holy Grail whirlwind concealed the ship from... a 99 Quest of the Holy Grail damselÕs request for aid.Ó Then... the marvels of the Holy Grail, which Our Lord has promised... a 108 Quest of the Holy Grail faithless unbeliever. And since you..., 112 Quest of the Holy Grail Our Lord has wrought a glorious... the adventures of the Holy Grail.Ó ÒWell,Ó said the hermit, Òyou... success. For if the Holy Grail should appear before you, I don... 113 Quest of the Holy Grail received the order of chivalry... 114 Quest of the Holy Grail hands of justice. Justice grants... the adventures of the Holy Grail about which all the others... in connection with the Holy Grail. When the worthy man heard... 124 Quest of the Holy Grail Jonaans, a good and loyal knight.... 128 Quest of the Holy Grail Nevertheless, he could not yet...: 130 Quest of the Holy Grail ÒLancelot, Lancelot, so long as...?Ó ÒI 135 Quest of the Holy Grail certainly have not,Ó said he... 137 Quest of the Holy Grail there was a wedding and a great... the adventures of the Holy Grail.Ó When they heard this, they... 141 Quest of the Holy Grail worldly matters, and he replied... find,Õ that is, the Holy Grail, the secret mysteries of Our... a 144 Quest of the Holy Grail palfrey, but preferred to come..., then the spring, the Holy Grail, shall disappear. For in the... the Holy Grail, and the signs of the Holy Grail will never... 146 Quest of the Holy Grail spiritual things which are much... 160 Quest of the Holy Grail would have been dishonoured but..., 161 Quest of the Holy Grail evidently recently killed. He looked... the adventures of the Holy Grail. Now I have explained to you... 179 Quest of the Holy Grail a quiet, peaceful room, far from.... 186 Quest of the Holy Grail And she shall make a substitution... 191 Quest of the Holy Grail their uncomely parts with their..., 193 Quest of the Holy Grail without going away sorrowful; and...,Ó 208 Quest of the Holy Grail said Galahad, ÒI was very regretful... 211 Quest of the Holy Grail vestments, having finished the mass... 213 Quest of the Holy Grail own death; that would certainly... see something of the Holy Grail. One evening it chanced that... 230 Quest of the Holy Grail sight befouled by worldly lusts... 231 Quest of the Holy Grail considered marvellous what God had... 235 Quest of the Holy Grail prayer, for he promptly returned... 236 Quest of the Holy Grail paradise. I am your relative Simeon... 237 Quest of the Holy Grail distant mountains, where he would....Ó 239 Quest of the Holy Grail While they were speaking thus... 243 Quest of the Holy Grail gentlemen,Ó said Galahad, Òif you... Cripple KingÕs. And the Holy Grail was upon it, covered with... 244 Quest of the Holy Grail Perceval; and he wondered greatly... the marvels of the Holy Grail.Ó Thus Galahad announced to Perceval... Holy Grail told him of the marvel of the Holy Grail and...



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... CHAPTER I Introductory Nature of the Grail problem. Unsatisfactory character of results...." This also specific achievement of Grail heroes. Extracts from Rig-Veda... Kings. Parallel between Shilluk King, Grail King and Vegetation Deity. Sone... previous enquiry. The Medieval Stage. Grail romances probably contain record of... long research. Essential to recognize Grail story as an original whole... a group with Grail Symbols. Difficulty of equating Cauldron-Grail. Probably belong to... Secret of the Grail (1) The Mysteries The Grail regarded as an object... with the Grail romances. CHAPTER XI The Secret of the Grail (2) The... and Esoteric parallels with the Grail tradition. Process of evolution sketched... Mithraic initiation. Possible survival in Grail text. Joint diffusion through the... explanation of unorthodox character of Grail legend. Evidence of survival of... historic facts. Reason for connecting Grail with Arthurian tradition. CHAPTER XIII... of the Perilous Chapel in Grail romances. Gawain form. Perceval versions... Author Provenance and authorship of Grail romantic tradition. Evidence points to... extensive literature to which the Grail legend has already given birth... between certain features of the Grail story, and characteristic details of... points of contact with the Grail tradition. Thus, the lonely upbringing... life, as related in the Grail romances.[11] In Gerbert’s continuation..., the perplexing problems of the Grail literature. We must now consider... connects these practices with the Grail tradition. The signification of the... chapters we have discussed the Grail Legend from a general, rather than... Grail as a Food-providing talisman, and that alone; another with the Grail... Folk-lore interpretation of the Grail and Lance excludes the Christian... by a ritual of which the Grail legend preserves a fragmentary record. In... tradition the origin of the Grail symbols is distinctly more satisfactory... that the appearance of the Grail synchronized with a mysterious supply of..., the Grail at the other. In Gawain’s adventure at the Grail castle, in the prose Lancelot, as the Grail is... of symbols found in the Grail romances; this correspondence becomes the... discussed in the preceding chapter, Grail, Sword, Lance, and Pentangle, or... a herb ’which belonged to the Grail.’ Unfortunately the reference, at the... of certain elements of the Grail literature is practically assured, the..., caught a Fish, which, with the Grail, provided a mystic meal of which... practically belongs, not to the Grail tradition, but to a Conversion legend... least contaminated, version of the Grail story the central figure would...-Fisher symbolism. Students of the Grail literature have been too prone..., like the explanations of the Grail romances, are often fantastic afterthoughts... noted as characteristic of the Grail romances, Borron’s Fish-meal should... the Grail; and the Dove is the badge of the Grail Knights... Secret of the Grail (1) The Mysteries Students of the Grail literature cannot... the Grail, but on his enquiry as to what the Grail may... characters and incidents of the Grail story, and a certain well-marked... romances the Grail community never actually eat from the Grail itself, but... the root of our existing Grail romances, possessed elements capable of... for a mystical development of the Grail tradition? The Exoteric side of... element of awe connected with Grail, and Grail Feast, but of the... coloured the representation of the Grail procession, although, for my own... women in the Grail ritual, the introduction of a female Grail messenger, or... curiously unorthodox tone of the Grail romances, their apparent insistence on... a dislocated form.[2] Perceval, seeking the Grail Castle, rides all day through... he gives explanations of the Grail, etc., at great length, explanations... Chapel, which survives in the Grail romances in confused and contaminated... not the King’s Highway! The Grail romances repose eventually, not upon... the composite fabric of the Grail Legend, the question naturally arises... original Grail heroes are of insular origin, and that the Grail legend... to the Grail King, according as the Arthurian, or the Grail, tradition... certainly the Grail adventure; the Master Blihis, who knew the Grail mystery... authority alike in the Tristan, Grail and Gawain tradition, and Professor... to that Abbey. But the Grail tradition was originally British; Glastonbury... on a definitely romantic career, the Grail story rapidly became a complex of.... I believe the connection with the Grail legend to be purely fortuitous... to enlightenment. Thus, while the Grail still retains its character of... story of Joseph and the Grail. [4] Cf. Littaturzeitung, XXIV. (1903), p. 2821... Holy Grail) and in his The Quest of the Holy Grail. The... of our Grail romances. [16] The Quest of the Holy Grail, pp... Temple," a hypothetical reconstruction of the Grail Initiation. [15] Owain Miles, edited... connection of Bledri with both Grail and Perceval legends. The locality... Temple," a hypothetical reconstruction of the Grail Initiation. [15] Owain Miles, edited...



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... CHAPTER I Introductory Nature of the Grail problem. Unsatisfactory character of results...." This also specific achievement of Grail heroes. Extracts from Rig-Veda... Kings. Parallel between Shilluk King, Grail King and Vegetation Deity. Sone... previous enquiry. The Medieval Stage. Grail romances probably contain record of... long research. Essential to recognize Grail story as an original whole... a group with Grail Symbols. Difficulty of equating Cauldron-Grail. Probably belong to... Secret of the Grail (1) The Mysteries The Grail regarded as an object... with the Grail romances. CHAPTER XI The Secret of the Grail (2) The... and Esoteric parallels with the Grail tradition. Process of evolution sketched... Mithraic initiation. Possible survival in Grail text. Joint diffusion through the... explanation of unorthodox character of Grail legend. Evidence of survival of... historic facts. Reason for connecting Grail with Arthurian tradition. CHAPTER XIII... of the Perilous Chapel in Grail romances. Gawain form. Perceval versions... Author Provenance and authorship of Grail romantic tradition. Evidence points to... extensive literature to which the Grail legend has already given birth... between certain features of the Grail story, and characteristic details of... points of contact with the Grail tradition. Thus, the lonely upbringing... life, as related in the Grail romances.[11] In Gerbert’s continuation..., the perplexing problems of the Grail literature. We must now consider... connects these practices with the Grail tradition. The signification of the... chapters we have discussed the Grail Legend from a general, rather than... Grail as a Food-providing talisman, and that alone; another with the Grail... Folk-lore interpretation of the Grail and Lance excludes the Christian... by a ritual of which the Grail legend preserves a fragmentary record. In... tradition the origin of the Grail symbols is distinctly more satisfactory... that the appearance of the Grail synchronized with a mysterious supply of..., the Grail at the other. In Gawain’s adventure at the Grail castle, in the prose Lancelot, as the Grail is... of symbols found in the Grail romances; this correspondence becomes the... discussed in the preceding chapter, Grail, Sword, Lance, and Pentangle, or... a herb ’which belonged to the Grail.’ Unfortunately the reference, at the... of certain elements of the Grail literature is practically assured, the..., caught a Fish, which, with the Grail, provided a mystic meal of which... practically belongs, not to the Grail tradition, but to a Conversion legend... least contaminated, version of the Grail story the central figure would...-Fisher symbolism. Students of the Grail literature have been too prone..., like the explanations of the Grail romances, are often fantastic afterthoughts... noted as characteristic of the Grail romances, Borron’s Fish-meal should... the Grail; and the Dove is the badge of the Grail Knights... Secret of the Grail (1) The Mysteries Students of the Grail literature cannot... the Grail, but on his enquiry as to what the Grail may... characters and incidents of the Grail story, and a certain well-marked... romances the Grail community never actually eat from the Grail itself, but... the root of our existing Grail romances, possessed elements capable of... for a mystical development of the Grail tradition? The Exoteric side of... element of awe connected with Grail, and Grail Feast, but of the... coloured the representation of the Grail procession, although, for my own... women in the Grail ritual, the introduction of a female Grail messenger, or... curiously unorthodox tone of the Grail romances, their apparent insistence on... a dislocated form.[2] Perceval, seeking the Grail Castle, rides all day through... he gives explanations of the Grail, etc., at great length, explanations... Chapel, which survives in the Grail romances in confused and contaminated... not the King’s Highway! The Grail romances repose eventually, not upon... the composite fabric of the Grail Legend, the question naturally arises... original Grail heroes are of insular origin, and that the Grail legend... to the Grail King, according as the Arthurian, or the Grail, tradition... certainly the Grail adventure; the Master Blihis, who knew the Grail mystery... authority alike in the Tristan, Grail and Gawain tradition, and Professor... to that Abbey. But the Grail tradition was originally British; Glastonbury... on a definitely romantic career, the Grail story rapidly became a complex of.... I believe the connection with the Grail legend to be purely fortuitous... to enlightenment. Thus, while the Grail still retains its character of... story of Joseph and the Grail. [4] Cf. Littaturzeitung, XXIV. (1903), p. 2821... Holy Grail) and in his The Quest of the Holy Grail. The... of our Grail romances. [16] The Quest of the Holy Grail, pp... Temple," a hypothetical reconstruction of the Grail Initiation. [15] Owain Miles, edited... connection of Bledri with both Grail and Perceval legends. The locality... Temple," a hypothetical reconstruction of the Grail Initiation. [15] Owain Miles, edited...



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... Mars Science Lander (Dr. Treiman), GRAIL (Drs. Kiefer and McGovern), Cassini... of the Moon revealed by GRAIL gravity gradiometry. Science, 339, 6120... Procellarum region as revealed by GRAIL gravity data. Nature, 514, 68...) Lunar interior properties from the GRAIL mission. Journal of Geophysical Research...) Lunar interior properties from the GRAIL mission. Journal of Geophysical Research...) Lunar interior properties from the GRAIL mission. Journal of Geophysical Research... P. J., AndrewsHanna J. C., Smith D. E., and Zuber M. T. (2014) GRAIL gravity constraints on the vertical... gravity recovery and interior laboratory (GRAIL)? Fall Meeting American Geophysical Union... the Moon as revealed by GRAIL gravity data. Lunar and Planetary... W. S., McGovern P. J., Smith D. E., and Zuber M. T. (2014) GRAIL constraints on the vertical density... lunar crust as seen in GRAIL data. Lunar and Planetary Science... GRAvity recovery and Interior Laboratory (GRAIL). Lunar and Planetary Science XLV... lunar crustal density stratification with GRAIL data. European Geophysical Union General... the moon as revealed by GRAIL gravity data. Lunar and Planetary... W. S., McGovern P. J., Smith D. E., and Zuber M. T. (2014) GRAIL constraints on the vertical density... GRAvity recovery and Interior Laboratory (GRAIL). Lunar and Planetary Science XLV... the Moon as revealed by GRAIL gravity data. Lunar and Planetary... Moon’s Early Volcanic History NASA GRAIL Guest Scientist Program Co-I: Kiefer... Analysis of GRAIL Gravity and other Remotely Sensed Datasets NASA GRAIL Guest... Team Participation:  Guest Scientist for GRAIL mission, 2012–2015.  Venus High... mid-August 2014. Mission Participation:  GRAIL (Gravity Recovery and Interior Laboratory... awarded a GRAIL Guest Scientist position, and I am a member of the GRAIL Team... Adobe Connect), November 15, 2013. “GRAIL Explores the Moon’s Interior”, for... the Moon as Revealed by GRAIL A New Volatility Scale for the... the Lab Mid-Term Reports GRAIL Explores the Moon Taking Your...



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... from Recent Lunar Missions: LADEE, GRAIL, Chang'e-3 Monday Morning, 8:30 a.m. [M103... Data and Selenodetic Data from GRAIL and LLR [#1696] A lunar internal... Melt Rocks and Implications for GRAIL Gravity Modeling of the Orientale... an important context for interpreting GRAIL gravity observations of lunar impact... Gravity Recovery and Interior Laboratory (GRAIL) Mission [#1447] The Endgame mapping... intrusion density and compare to GRAIL observations. 11:15 a.m. Sood R. * Chappaz... Nearside Crater Revealed by GRAIL Gradiometry [#1883] GRAIL data applied to detect... Models of the Moon Using GRAIL Primary and Extended Mission Data... models of the Moon using GRAIL data only. 11:45 a.m. Li... Thorium Anomaly as Revealed by GRAIL [#2185] Compton-Belkovich is associated...-Aitken Basin as Constrained by GRAIL and LOLA Observations [#1953] We... European spacecraft elements. LUNAR GEOPHYSICS: GRAIL RESULTS   [T603] Byrne C. J. POSTER LOCATION... a combination of Clementine, M3, and GRAIL data to search for signatures... Basalts and Cryptomare from GRAIL [#2691] We use GRAIL gravity data to... Model Inversion Using Constraints from GRAIL and Apollo Data (and Preparation... Gravity Recovery and Interior Laboratory (GRAIL) Data [#3023] We performed a preferential...-air anomaly map derived from GRAIL. We then constructed a 2D inversion... #45 Evaluation of Degree-1200 GRAIL Gravity Models Using Line-of... Spectral Analysis [#1314] We compare GRAIL gravity models against the gravity... Interior from GRAIL [#1380] A solution for a very-high-resolution GRAIL gravity field...



Дата загрузки: 2017-05-20
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... Waste Land and Attaining the Grail ........................................................................................................................ 213 Chapter 7 Michel Zink‟s Déodat... Quest for Oneself ....................................................................................................................... 224 7.1 The Grail Quest from the Perspective of..., Arthurian adventures and, particularly, the Grail quest, have been consistently intriguing... Television (London: McFarland, 2013). 1 the Grail quest that mention both medieval... medieval Grail quest romances, followed by an overview of modern Grail literature.... 7 MaryLynn Saul, „The Unholy Grail: Recasting the Grail Myth for an Unbelieving... of individual Grail quests. Wagner‟s Parsifal informed ideas about the Grail quest... Grail, Prolegomena to a Study of Grail Imagery in Arthurian Manuscripts‟, in The Grail..., P. J. C. Field, „Malory and the Grail‟, in The Grail, the Quest and the... World, David Lodge approaches the Grail quest from a different perspective, being... the earlier Grail quest romances. Zink‟s use of the Grail quest trope... of the Grail which differs from Chrétien de Troyes‟s Grail, an... the Grail quest, as well as exclusion from discussion of Grail literature... medieval and modern literature, the Grail quest narrative represents one version... medievalism, the Arthurian and the Grail quest themes make a spectacular reappearance... a substantial change from Malory‟s Grail and the Grail of Malory‟s sources. He... society, the Grail is, more often than not, an „Unholy Grail‟, a dangerous... Lance‟s „Unholy Grail‟, but there is also, presumably, the Grail of Percival... the „Unholy Grail‟ of sexual sin, but the Holy Grail of genuine... („The Lancelot-Grail Project: Chronological and Geograpical Distribution of Lancelot-Grail Manuscripts..., p. 3. 25 Stones, „Lancelot-Grail Project‟. 26 Stones, „Lancelot-Grail Project‟. 32 entertainment..., MS 93-94 (Stones, „Lancelot-Grail Project‟). 32 K. S. Whetter, „Subverting, Containing... 2013]). 35 Stones, „Seeing the Grail‟, p. 302. 36 Middleton, „Manuscripts‟, p. 219..., the Grail book, if indeed it is a romance about the Grail quest... „emphasizes the importance of the Grail quest, thus reinforcing a perspective established...: Perceval‟s Sister and the Grail Quest‟, in The Grail: A Casebook, ed. by... to modern Grail quest literature rather than considering the Grail quest, if...‟ virginity conceptualized as a kind of „Grail‟.8 Kaufman acknowledges that the popularity... see the Grail if you recall. Did you find the Grail? You... the „Unholy Grail‟, and Percy‟s use of the Grail quest metaphor for... Grail is quite intentional‟, indicating that „the quest for the contemporary Grail... way to attaining the Grail and that the Grail can be achieved... most prominent difference between medieval Grail romances and Percy‟s Lancelot is... appearance of the Grail itself. In medieval romances, the Grail may be... Grail, there is Percival‟s Grail and the film-makers‟ Grail. Lancelot‟s unholy Grail constitutes...‟s Grail is closer to the true Grail than Lancelot‟s unholy Grail. The third Grail..., including contemporary theories about the Grail origins presented in Jessie Weston... romances, particularly romances about the Grail quest, Percy‟s Lancelot has a didactic... no unholy grail just as there was no Holy Grail‟ (275). Lancelot... accomplish the Grail quest, has parallels in medieval and American Grail quest.... Analogies between Lancelot and medieval Grail quest romances are generally found... resembles the medieval Grail quest romances, where the Grail is taken from... private Grail of affection enables the attainment of the public Grail and... end, the Grail quest romances usually end with the Grail being taken... the possibility of any further Grail adventures. 6.2 Reality Clashes with Literary... distinguished father, Arthur Kingfisher. Persse‟s Grail being wordplay on „girl‟, it... message of medieval Grail quest romances, where the Grail is available only... their interpretation of the Grail: in Déodat, the Grail is viewed, by... the Grail quest is primarily a spiritual adventure. However, the Grail quest in... to seek the Grail, because through knowing the Grail mysteries one comes... one nearer the Grail and why approaching the Grail means moving closer... to attain the Grail appears in the medieval Grail quest romances, including... theme of the Grail story].40 Zink‟s Grail can be achieved only... guidelines for action. Approaching medieval Grail quest romances, a reader has to...., The History of the Holy Grail (Cambridge; D. S. Brewer, 2010) O‟Donovan, Daniel...), 45-8 ---------, „Malory and the Grail‟, in The Grail, the Quest and the...) Saul, MaryLynn, „The Unholy Grail: Recasting the Grail Myth for an Unbelieving... Holy Grail‟, Arthuriana, 21:2 (2011), 42-58 Smith, C. E., „The Unholy Grail in... Lancelot-Grail Project: Chronological and Geographical Distribution of Lancelot-Grail Manuscripts‟, The... Grail, Prolegomena to a Study of Grail Imagery in Arthurian Manuscripts‟, in The Grail...: Perceval‟s Sister and the Grail Quest‟, in The Grail: A Casebook, ed. by...



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... GRAVITY RECOVERY AND INTERIOR LABORATORY (GRAIL): EXTENDED MISSION AND 1 1 2 2 ENDGAME STATUS... Gravity Recovery and Interior Laboratory (GRAIL) mission [1], NASA’s 11th Discovery mission... 1, 2012, and May 29, 2012. GRAIL’s Extended Mission (XM) initiated on... in unprecedented detail. Primary Mission: GRAIL is the lunar analog of... since its launch in 2007. GRAIL was implemented with a science payload...-11) mission, launched in 2005. GRAIL launched on September 10, 2012... XM is shown in Fig. 1. GRAIL’s XM average altitude was 23... altitude [6]. The objective of the GRAIL XM is to determine the.... To address this objective, the GRAIL XM undertakes six investigations, with... GRAIL PM [3] and LP [4]. The root mean square power of the GRAIL... are possible from these data. GRAIL Endgame. On December 6, 2012, the average altitudes of the two GRAIL orbiters were lowered by another... been obtained. GRAIL’s sci- Figure 1. Heliocentric view of GRAIL Extended Mission (XM... 3. Power and error spectra for a GRAIL gravity field model to degree... blue dotted lines correspond to GRAIL’s global and regional requirements, respectively... requirements. Figure 2. Measurement requirements for GRAIL’s XM (in blue) in comparison... to GL0420A obtained during the GRAIL endgame.



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...-5 Small Spacecraft Design for the GRAIL Mission Stuart R. Spath Lockheed Martin... Gravity Recovery and Interior Laboratory (GRAIL) mission was to collect a global... of 200.6 kg each, these GRAIL spacecraft were among the lightest... the on-orbit performance during GRAIL’s primary mission including: • Spacecraft performance... mission Not only have the GRAIL spacecraft returned a wealth of scientific... Development Office (RSDO) catalog. The GRAIL mission proposal was submitted to... the basic mantras of the GRAIL proposal was high value science... extend through December 7, 2012. INTRODUCTION GRAIL is a two-spacecraft lunar gravity... OVERVIEW A NASA Discovery-class mission, GRAIL will unlock the mysteries of... acquired about the moon from GRAIL will be extended to understand... how the terrestrial planets evolved. GRAIL’s mission design for the primary... depicted in Figure 1. Per the GRAIL project-level documentation, the mission... other terrestrial planets. Credit: JPL GRAIL was implemented using an Lockheed... and Climate Experiment (GRACE) mission. GRAIL placed twin spacecraft (referred to... of the lunar gravity. The GRAIL science team then utilized the... and to October 19, 2011. GRAIL was launched on the third... days of weather delays. The GRAIL spacecraft separated from the Delta...-v, and longer TLC duration. For GRAIL, the extended TLC duration was... process was used successfully on GRAIL to design and maintain a spacecraft... of the Science phase the GRAIL spacecraft were in a near-polar... than three times underneath the GRAIL orbit. The collection of gravity... derivation and flow-down for GRAIL began with systems engineering performing... in all applicable sources including GRAIL’s environmental requirements document (ERD), JPL... studies were performed by the GRAIL spacecraft team to drive out... bus was not adequate for GRAIL. Because it was designed for... the 850 m/sec required by GRAIL to capture into lunar orbit... options to consider as the GRAIL point of departure. These bus... bus would fly unchanged. The GRAIL team was fully aware that... arrays were undersized for the GRAIL power requirements. The solar array... XSS-11 to ~800W on GRAIL) simply by increasing the size... the development lifecycle, the twin GRAIL spacecraft were designed to be.... The gravity measurement technique on GRAIL (inherited from GRACE) requires that... the other pointed aft. Furthermore, GRAIL’s orbit requires that the normal... each spacecraft, but the two GRAIL orbiters fly in orientations that... Redundancy. One unique aspect of GRAIL was the extremely short mission... on other missions. Moreover, the GRAIL ERD specified benign radiation conditions.... Based on all these factors, GRAIL was proposed as a single-string... it would not significantly increase GRAIL’s mission risk. Figure 8: Science Collection... instances of component redundancy, the GRAIL Fault Protection (FP) required some... to reduce thermal perturbations during GRAIL science collection necessitated two key... safeguards were in place for GRAIL. WARM GAS RADIATOR BATTERY RADIATOR..., computer modeling, and technical reviews. GRAIL’s successful Preliminary Design Reviews at...) and David Lehman (JPL), the GRAIL project submitted an extended mission... Credit: JPL PRIMARY MISSION S/C PERFORMANCE GRAIL’s primary mission ended on May... on May 29, 2012, the GRAIL spacecraft completed their primary mission.... The press release states: The GRAIL mission has gathered unprecedented detail... diverse worlds we see today. "GRAIL delivered to Earth over 99... phasing data provided by the GRAIL mission design team, the spacecraft... Fault Protection GR-A GRAIL-A spacecraft, or Ebb GR-B GRAIL-B spacecraft, or Flow... Gravity Recovery and Climate Experiment GRAIL Gravity Recovery and Interior Laboratory... spacecraft components. This is because GRAIL’s 9-month primary mission duration was.... Maria T. Zuber (GRAIL Principal Investigator) and Dr. David E. Smith (GRAIL Deputy Principal... acknowledge David H. Lehman (GRAIL Project Manager), Tom L. Hoffman (GRAIL Deputy Project Manager), and the rest of the GRAIL team from the Jet Propulsion Laboratory. The GRAIL mission... success of the primary mission, GRAIL was recently awarded an extended... like to acknowledge John W. Henk (GRAIL Spacecraft Manager) and all the... Company that worked on the GRAIL program—your performance, commitment, and... and currently serves as the GRAIL Program Manager. Other previous positions... 1. Beerer, J.G., Havens, G.G., “Operation the DualOrbiter GRAIL Mission to Measure the Moon..., K.K., “Mission Design Overview for the GRAIL Mission,” AIAA/AAS Astrodynamics Specialist... publication). 3. McMechen, A.M., Kato, D.N, Roncoli, R.B., Fujii, K.K., “GRAIL Flight System Design Description & Nomenclature... 23, 2010. 4. Zuber, M.T., et al, “GRAIL Senior Review Proposal—Extended Mission...



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... General relativistic observables of the GRAIL mission Article in Physical review.... General relativistic observables of the GRAIL mission Slava G. Turyshev1,3 , Viktor T. Toth2... travel times between the two GRAIL spacecraft. We develop a general relativistic... for this fundamental observable of GRAIL, accurate to 1 µm. We develop and... potentials and their application to GRAIL. I. INTRODUCTION Several past, present and... Gravity Recovery and Interior Laboratory (GRAIL) mission, which comprises two spacecraft... particular current interest is GRAIL, as the two GRAIL spacecraft are presently..., we therefore focus on the GRAIL mission and its science observables... reach its science objectives, the GRAIL mission relies on precision navigation... various microwave signals used on GRAIL for formation tracking and navigation... are critical for GRAIL. The ultimate observable model for GRAIL must correctly... “B” are the positions of the GRAIL-A and GRAIL-B spacecraft, respectively, and “C” is... range RAC = |RAC | between a GRAIL spacecraft (GRAIL-A, for instance) and a ground-based... even exceeding that of the GRAIL experiment, have already been discussed... computing the observables of the GRAIL mission, with results that are... for another fundamental observable on GRAIL: the dual one-way range... GRAIL. To reach its scientific objectives, in addition to the BCRS, GRAIL... level of accuracy required by GRAIL. A. Barycentric Coordinate Reference Frame (BCRS... for the purposes of the GRAIL mission (i.e., neglecting higher order mass... that the O(c−5 ) terms are beyond GRAIL’s sensitivity; see the analysis in... nature of the observables on GRAIL further reduces the sensitivity of... for collection and interpretation of GRAIL data. C. Coordinate systems used in... level of accuracy anticipated for a GRAIL, it is sufficient to consider... and, thus, completely negligible for GRAIL. In addition, we present only... level of accuracy sufficient for GRAIL, we have: dτC 1 =1− 2 dt c 1 2 (vE + [ΩE × yC... coordinates to be considered for GRAIL. In addition to the terrestrial... the spacecraft GRAIL-A are (the equations are identical for GRAIL-B, except for... equations of motion of the GRAIL-A spacecraft in the lunicentric frame..., making it barely observable with GRAIL. Note that the lunar angular... , which makes it negligible for GRAIL. A m 0 ˆ A a result, the metric tensor gmn... the reference frames relevant for GRAIL, expressed in terms of harmonic... effect. As far as the GRAIL’s accuracy in concerned, contributions to... micron-level sensitivity of the GRAIL mission, they become noticeable. It... worthwhile, demonstrating that a spacecraft with GRAIL’s sensitivity is already a practical instrument... the anticipated accuracy of the GRAIL experiment, we can simplify Eq... most Solar System experiments including GRAIL, as seen from BCRS, the... timing observables on GRAIL. 14 FIG. 2: Timing events on GRAIL: Depicted (not... the world-lines of the GRAIL-A and GRAIL-B spacecraft with corresponding proper... . In the case of the GRAIL mission, when signal transmission between...-way range (DOWR) observables on GRAIL, we need the expressions derived... the interpolation algorithm realized on GRAIL to synchronize the LGRS clocks... their magnitudes and relevance for GRAIL. To develop numerical estimates for... TABLE I: Select parameters of the GRAIL mission (some taken from Ref... text. Parameter Symbol(s) Values used GRAIL Mission Inter-spacecraft range dAB... of signal propagation 2 realized on GRAIL (dAB /c ≃ 1 ms), this term is... Range-Rate (DOWRR) observables on GRAIL To develop an analytical form... on the GRAIL mission, the model for DOWRR on GRAIL given by... instantaneous DOWRR observable for the GRAIL mission, developed to a level of... for the observables of the GRAIL mission. We addressed some practical... accuracy of modeling of the GRAIL fundamental observables. We presented a hierarchy... at the accuracy required for GRAIL. We advocate a definition for the... of the relativistic computations for GRAIL are done implicitly and are... Ref. [18]. To navigate the GRAIL spacecraft, the code transforms the... of sensitivity of the GRAIL mission demonstrate that GRAIL is already a practical... very similar to that of GRAIL. Indeed, the calculations presented here...., submitted (2012). [6] G. L. H. Kruizinga and W. I. Bertiger, GRAIL Project Memorandum (2009). [7] M. Soffel, S. A. Klioner... and frequency transfer in the GRAIL experiment. The derivation presented in... are thus relevant to the GRAIL mission configuration. Appendix B: Evaluating the..., nothing is perfect and the GRAIL mission’s design relies on a synchronization... (t − t0 )2 m/s , which is negligible for GRAIL. Appendix C: Relativistic frequency transfer between... generated on-board the two GRAIL spacecraft. However, these frequencies are... observable for spacecraft such as GRAIL that are equipped with a precision... frequency fA0 , located at point A (GRAIL-A), which emits light signals during... In a 1-way Doppler transmission between a GRAIL spacecraft and a DSN station, the...). With the X-band navigation on GRAIL with frequency ∼ 8.4 MHz, the result...