Двигательная установка. LE-7A. [Редактировать]

LE-7A это обновленная версия двигателя LE-7. Основной дизайн остался неизменным. Модификация 7A была произведена с целью упрощения процесса производства и сборки. Кроме этого, реконструкция двигателя была произведена с целью его адаптации к использованию на ракетах серии H2A.

Изменения по сравнению с базовой версией:

  • снижение объемов сварочных работ за счет изменения конструкции магистралей (снижение свариваемых элементов с 935 до 458, а частей со 166 до 99);
  • изменение топливного и окислительного индукторов;
  • сокращение числа деталей в инжекторе;
  • уменьшение размера камеры сгорания (снижение числа элементов с 452 до 295, а числа сварных деталей с 209 до 24);
  • понижение импульса, по сравнению с базовой версией.

 

Технические характеристики

#ХарактеристикаЗначение
1Длина, мм3660
2Топливоводород
3Максимальный диаметр, мм1815
4Тяга, тс110
5Удельный импульс, секунд441
6Масса, кг1740
7Окислителькислород
8Давление (в основной камере сгорания), кгс/см в кв.121
9Давление (в ГГ), кгс/см в кв.214
10Соотношение компонентов6.0:1
11Частота вращения (вала насоса горючего), оборотов в минуту41270
12Частота вращения (вала насоса окислителя), оборотов в минуту18040
13Максимальное время (работы в составе РН), секунд600
14Степень расширения сопла, раз54
15Дроссель, процентов70

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Стоимость (двигателя), млн. долл.10

Найдено 1000 документов по запросу «LE-7A». [Перейти к поиску]


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... oxygen tank 2nd stage engine (LE-5B) 1st stage liquid oxygen... (SRB-A x 4 units) 15m リフトオフ 1st stage engine (LE-7A x 2 units) H-IIB Launch Vehicle *This... performed by the second stage LE-5B-2 engine idle mode combustion... Electronics NEC ・LE-7A turbopump ・Solid rocket booster ・Payload Faring ・GCC ・LE-5B turbopump... welding). Clustered first stage engine (LE-7A) ・Two engines are clustered for... oxygen tank 2nd stage engine (LE-5B) 1st stage liquid oxygen... 12 m/12 m 4m 16.7 tons LE-5B 137 KN 448 seconds....7 tons LE-5B 137 KN 448 seconds 5.2 m about 176 tons LE-7A x 2 1098 KN×2 440 seconds 4m About 100 tons LE-7A x 1 1098... hydrogen tank 15m 1st stage engine (LE-7A x 2) H-IIB Launch Vehicle SRB-A Propellant...)) CFT/ GTV L / O Thick wall tank LE-7A engine Combustion gas L/V side HTV... Payload fairing C B D SRB-A 1st pair LE-5B Engine 2nd stage A SRB...



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...* 1 The first-stage LE-7A and second-stage LE-5B engines of the..., with the LE-5B development completed in 2000, the LE-7A development is... the second-stage engine, the LE-5A, failed and in the... the first-stage engine, the LE-7, failed. Development of these engines... of the LE-7A engine, an improved model of the LE-7, was started... same year, development of the LE-5B engine, an improved model of the LE-5A, was also started mainly... the five units of the LE-5B engine and the development... Ishikawajima-Harima Heavy Industries Fig. 1 LE-7A engine *1 Nagoya Guidance & Propulsion Systems... 2.1 The LE-7A engine Fig Fig.. 1 shows a picture of the LE-7A engine. This engine has been developed by improving the LE... the H-II launch vehicle. The LE-7A engine operates on the same... cycle) as that of the LE-7 but has higher reliability, lower... in the later stage. 2.2 The LE-5B engine Fig Fig.. 2 shows a picture of the LE-5B engine. The LE-5B engine has been developed by increasing the Fig. 2 LE-5B engine Mitsubishi Heavy Industries... from 12.4 tons of the LE-5A. A change of engine cycle... project 3.1 The LE-7A engine Ta b l e 1 s h o w s t h e L E - 7 A e n g i n e d e v e l o p m e n t schedule. Development of the LE-7A engine was... which were conducted on the LE-7 engine to confirm applicability of... for the development of the LE-7A engine. The designing work for... the development of the LE-7 engine, because the LE-7 engine took almost... of the first stage engine LE-7 during flight. The problem engine... for the development of the LE-7A engine. The launching operation of... LE-7 engine of the H-II launch vehicle. The development of the LE-7A.... 7 qualification engine in 2002. 3.2 The LE-5B engine T a b l e 2 s h ow s t h e L E - 5B en... schedule. The development of the LE-5B engine was started in 1994. In 1955, an LE-5A engine, which was used... the injector designed for the LE-5B engine and the combustion... the combustion chamber of the LE-5A engine caused an external... trouble would happen to the LE-5B engine, and accordingly no... taken against it, because the LE-5B engine had already employed... to finish development of the LE-5B engine when the phase..., there was a possibility that the LE-5B engine might experience a restart... in the operation of the LE-5A engine. On reflection, it... of No. 8 H-II vehicle. The LE-5B engine was installed on... the LE-7A engine, all problems revealed in the development of the LE... the schedule for improvement. The LE-5B engine has passed the... et al., Development of Improved LE-7, Mitsubishi Juko Giho Vol.33... of H-IIA Rocket Engine (LE7A, LE-5B), Mitsubishi Juko Giho Vol....5 (1998) p.344 (3) Kakuma, Y. et al., LE-5B Engine Development, AIAA-20003775...



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... in the development of the LE-7A engine and was contributed to... the development of LE-7, the former rocket engine of LE-7A. He is.... Matsuyama, explain the LE-7A rocket engine No.4: The LE-5B engine for... it to success. From LE-7 to LE-7A The development of rocket engines... sacrifices. To develop the LE-7, former engine of LE-7A, it required total... yen. Thereupon, H-IIA rocket and LE-7A engine, which should be economically... to develop. Development of LE-5B, LE-7A The data that gave settle... of LE-7 and should reflect to the development work of LE-7A became... 260 places in LE-7 to 60 places in LE-7A. SPACE JAPAN REVIEW... 4 Also from the experience of LE-7, find and diet the unnecessary... began the development work of LE-7A; the first burn out test... performance for HII-A) engine LE-5B LE-7A thrust 14 ton 109.5 ton... fleasibity The development of the LE-7A engines of H-IIA Rocket No... with each manufacture to inspect. LE-7A engine that was produced as.... No.6: Compares of 6: LE-7A (the left) and LE-7 engine explained by Mr... for the 1st stage engine (LE-7A), Mr. Matsuyama said. The modification.... 8-1: The nozzle skirt of the LE-7A engine SPACE JAPAN REVIEW, No.... 8-2: The nozzle skirt of the LE-5B engine The rocket is...



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H A H A 1 H A H A H H H A A H H 3 A A H A H A H A H 8 H H A A 5 H A H H A H A H H A H A A H H H A A H H H A A A 1 H A H A H H H A 2 SSB H A MDS-1 DASH H LE-7A LE-7A 3.7 2 4.6 H H LE-7A SRB-A SRB-A LE-5B LE-5B 3 LE-5B NASDA H H A 4 LE-5B LE LE 5B 7A SRB-A LE 7A SRB H H A H A FMEA 5 LE-7A LE-5B SRB-A H FMEA FMEA end-to-end 6 H A NASDA/ NASDA H A H 7 H III H A SRB-A 8 H H A A LE-7A OTP LE-5B SRB-A H A 9 H A H H H H A A H H A A H 10 A A H H H A A (GTO) 1 2 LE-5B H H A 2 LE-5A LE-7 1 LE-5B LE-7A SRB-A LE-7A 11 km LE-7 LE-7A LE-5B LE-5A km km = 1080 kN = 445.6 s LE-7A =1073 = 429 30kN 4.7s LE-7A = 122 kN = 452 s LE-5B = 137 = 447 3.7kN 4.8s LE-5B 12 = 1047 1066 kN = 430 s = 134 135 kN = 448 s Built In Test Built In Test 13 14 o-p o-p ( 15 ) 16 17 NPSH(Net Positive Suction Head) 18 H- H- H- H- H- HH- H- H A (1) (2) (3) (4) 3 3 5 8 1 7 5 0 0 1 1 0 0 0 0 H- A H- (1) 2 1 (2) 8 6 4 1 5 5 3 0 0 2 1 LE-5B Built-in-Test 20 43 (1) (2) (3) (1) 5 4 7 6 5 3 4 0 0 1 0 FMEA FMEA (2) (3) LE-7A LE-5B SRB-A 5 6 0 4 5 0 (1) H(2) H- A 8 3 0 3 0 (1) (2) (3) H- A H- 4 H- H- 4 7 0 0 6 1 H- A B C H- 8 D E F (1) (2) (3) (4) (1) (2) (3) (4) (5) (6) (7) (1) (2) (Failure Modes and Effects Analyses: (Fault Tree Analyses Analyses: ) ) ) (Probabilistic Risk (3) (4) (1) (2) (3) (4) (5) (6) (7) (1) (2) (3) (4) NASDA (1) (2) l l l l l (Failure Modes and Effects Analyses: (Fault Tree Analyses Analyses: ) ) ) (Probabilistic Risk (3) (4) H 8 H A ( ) 1. 2. 3. 4. 1. 2. NASDA NASDA 1. 2. H-IIA 1. 2. Failure Modes and Effects Analyses) 1. 2. 1. 2. 3. 1. 2. 3. 1. NASDA 2. SRB-A SRB-A 1. 2. 3. SRB-A SRB-A 1/4 SRB-A SRB-A SRB-A SRB-A H-IIA SRB-A 1. 2. 3. 1. 2. 1 0.9deg/s 0.05deg/s 1. 2. -0.25 0.25deg/s 3deg/s SRB-A 1. 2. 2 SRB-A SRB-A SRB-A FTP 0.067 0.08 55.6 6.49 90 7.14 NPSH NPSH153m 235m NPSH 80m 1.2 9 2040 10 1900 NPSH NPSH FTP 0.028 LE-7A LE-7A 1. 2. 3. OTP NPSH(33.7m) 10m LE-7 OTP OTP SRB 33.7m NPSH 43.5m 1. 2. / LE-7A Restricted Shock Separation l l ü ü LE-7A 1. 2. LE-7A LE-7A NAL,ISAS FTP / NPSH 1. 2. 28 NAL/NASDA 3,647 run-to-run 1. 2. 3. 55,000rpm 69,000rpm . OTP FTP NPSH NPSH FMEA 4mm H A



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MHI No.1: MHI H-IIA LRE 36186.2km) AIAA JFSC 36190.6km( 251.3km( 251.3km) LE-7A 1 0.1 No.2: 1983 LE-7A LE-7 H-IIA H-II H-II/F#5 , H-II/F#8 H-IIA H-II TO GTO 7 2 No.3 : LE-7A No.4: HII-A LE-5B 3 H-IIA H-IIA 8 25 29 13 LE-7 00 16 00 LE-7A H-IIA LE-7A LE-7 16 3 500 180 90K C, 140 180 H-II 12 1994 H-II H-IIA LE-7A LE-5B, LE-7A LE-7 LE-7A CAD LE-7 LE-7 260 6 4 LE-7 No. 5 : HII-A 12 H-2A1 LE-7A 1 10 13 2 11 12 H-2A1 H-2A 1 LE-7A 13 5 1 NASDA/MHI ECS No. 6: LE-7A( ) 1 Ka-Band TWT LE-7 8 6 31 20 MU-300 MU-300 21 9 23 24 3 30 6 25 1 No.7 :2 LE-7A 0.5mm 7 2 / 109.5 112 250 No. -1 : LE-7A 8 3,000 No.8-2 : LE-5B 30 H-IIA 10 53m H-IIA 285 NASDA MHI H-IIA LRE 9 No. : H-IIA No.10 :HII-A 10 MHI ( ) H-2A No.11: He She ”He” Hero” She” She ”She” She” 11 No.1 No.1 : :HII-A SJR 12



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.... 4 3 N o. 1 2 010 Development of Turbopump for LE-X Engine MIZUNO Tsutomu : P. E. Jp, Manager..., Aero-Engine & Space Operations The LE-X is a new cryogenic booster engine... paper reports the characteristics of LE-X engine, and baseline specifications of... and liquid hydrogen engine, the LE-5. The turbopumps adopted for this... with the LE-5A, the LE-5B, the LE-7, and then the LE-7A. IHI... into the development of the LE-X engine (1) based on a recognition of... of the exterior of the LE-X engine. Using liquid oxygen and liquid hydrogen as propellants, the LE-X engine significantly increases the impulse... bleed cycle.(2) Figure 2 illustrates the LE-X engine cycle. As combustion gas... the basic specifications for the LE-X engine and the technical features... by IHI. Fig. 1 Illustration of LE-X engine exterior Liquid hydrogen Liquid... hydrogen turbopump Combustion chamber Fig. 2 LE-X engine cycle 43 V o l . 4 3 N o . 1 2 0 10 Table 1 LE-X engine characteristics 2. Outline of research and development into the LE-X engine 2.1 Concept behind the engine... behind the development of the LE-X engine is improved reliability. The LE-X employs a simplified, more reliable engine ... a high specific impulse for the LE-X engine by taking a design approach...) main characteristics of the LE-X engine. The LE-X engine has been technically... as that of the LE-7A engine (hereinafter called LE-7A), but has a high...% lower than that of the LE-7A. The liquid oxygen turbopump (hereinafter... level as that of the LE-7A, but has a very low turbine... higher than that of the LE-7A, but its nominal turbine outlet... are the characteristics of the LE-X engine and its turbopumps. The... that are extremely 44 Unit LE-X Impulse (in vacuum) Item kN... ratio — 2.9 Expansion ratio — 37 Table 2 LE-X turbopump specifications Unit FTP OTP... of the reliability of the LE-X engine and some new technologies... the technical feasibility of the LE-X engine system. 3. Characteristics of the LE-X engine 3.1 Selecting the engine working ... and performance level required for LE-X engines. Figure 6 shows an impeller... and performance level required for LE-X engines. The authors selected hybrid... been successfully developed for the LE-7A. For the shaft seals and... been successfully applied to the LE-7A. The authors applied a high-quality... into the development of the LE-X engine, the basic specifications for... characteristics of the turbopumps. The LE-X engine is the world’s first... the technical feasibility of the LE-X engine system. — Acknowledgements — The authors... research. REFERENCES (1) K. Okita : A Study of LE-X Engine Space and Aviation technology... S. Kobayashi : Visualization and Optimization of LE-X Engine System ISTS 2009-a-04... for Integrated System Design of LE-X Engine 53rd Space science and...



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... air. (Tableau G. Hartmann). Fig. 3 - Catalogue Le Rhône, 1913. (Archives Snecma... la Société des Moteurs le Rhône le 6 septembre 1912 à Montreil-sous... rotatif, qui sera rebaptisé Le Rhône 7A en 1912 et qui... 1912 et 1913, le moteur Le Rhône 7A se couvre de gloire... cylindres en étoile rotatif. Le moteur Le Rhône 9C dont la... d’aviation. Fig. 5 - Entrée de l’Usine Le Rhône, Paris boulevard Kellermann..., décembre 1912. (Archives Snecma). Le moteur Le Rhône 9C remporte en... délicate fabrication industrielle des rotatifs. Le 17 juin 1914, les bureaux... l’armement, la fusion devient effective le 2 janvier 1915. La société des... logos Gnome et Le Rhône. Le bureau d’études Le Rhône au... 1924, ce sera le dernier moteur portant le nom Le Rhône. Léger et robuste, le moteur 9-cyl Le Rh..., mondialement connue, n’a existé réellement sur le plan commercial que 26 mois...-cyl Gnome de 160 ch, le moteur Le Rhône 14 D ne... même puissance. Après le 14 D, Verdet crée le moteur Le Rhône 18..., entaché des mêmes défauts que le 14 D, cette magnifique mécanique d’aspect... tard par un rachat 4 Le Rhône 7A/7B, description du Gnome... soupape d’admission. Caractéristiques. - Le type 7A/7B est un moteur rotatif... 10 ch de plus que le 7A à 100 tours de plus. Al... sur l’unique manivelle de vilebrequin. Le refroidissement se fait par l’air.... 12 - L’architecture du moteur Le Rhône 7A/7C est identique à celle... traction à l’admission. Fig. 16 – Moteurs Le Rhône, circulation d’huile. (Archives.... Un distributeur fixé sur le carter moteur envoie le courant à chaque bougie... came arrière l’échappement. 6 Le Rhône 7A/7B, utilisation 12 litres... un record de vitesse. Le moteur Le Rhône est homologué par...és par l’aviateur Georges Legagneux. C'est le second 7-cyl adopté par l'arm... son Morane-Saulnier à moteur Le Rhône 7A, un moteur choisi pour...-Saulnier établissant une comparaison avec le Gnome effectue un vol direct... équipées du moteur Le Rhône 7A de 50 ch. Dans... sobriété du moteur fait merveille. Le 31 décembre 1912, quelques semaines... histoire aussi exceptionnelle. Caractéristiques. - Le type 9C est un moteur... (traditionnellement celle du haut sur le plan vertical, correspondant un cylindre... moteurs rotatifs à 9-cyl. Tableau G. Hartmann. Le moteur comprend une partie fixe... Martin fermé à l’avant 1. 8 Source : catalogue Le Rhône 1913, archives SNECMA... par minute. Dès l’arrêt du moteur, le pilote doit fermer l’arrivée d’huile...) et d’Eugène Gilbert, le moteur Le Rhône 9C de 80... moteur Gnome 80 ch et le nouveau Le Rhône 9C de... (220 km), sans escale. Le 18 août, le richissime Lord Carbery sur..., Lyon, Clermont-Ferrand et Mourmelon. Le 9 novembre, l’aviateur Maurice Chevillard, qui... d’altitude, 6 120 mètres. Fig. 30 – Le monoplan Bristol-Coanda at Larkhill... choisi. (Collection Clerget). Fig. 31 - Le terrain d’aviation de Salisbury Plain à Larkhill fut le premier terrain d’aviation militaire et... 1913. (Document CAEA). Fig. 32 - Le fameux biplan Sopwith « Tabloïd », vainqueur... pas parvenu à faire fonctionner correctement le moteur. Les deux manetons du... permettant à l’huile d’atteindre les paliers. Le plateau arrière, fixe, qui... à un seul carburateur a été essayée, mais le résultat n’est pas bon. Quand.... (Document CAEA). Le Rhône 11-cyl. - Le 11-cyl Le Rhône... I sans réchauffe), huile : 6,5 litres/heure. Le 9J n’est pas seulement plus...ée du tube creux du vilebrequin. Le carburateur dispose d’une réchauffe, permettant... efforts longitudinaux est supprimée, et le roulement arrière à rotule S.K.F. tient... des pistons en aluminium. Le moteur Le Rhône 9J est produit... les procédures d’homologation. Le moteur Le Rhône 9C (80 ch... 9A (110 ch) en novembre, le Le Rhône 9J (110 ch... entre Kellermann et Chalais-Meudon Le moteur Le Rhône 9J est... puissants, biplaces et très armés. Le Fokker E1 à la mitrailleuse synchronis... dans le ciel français. Le « bébé » Nieuport. – Au printemps de 1914, le Nieuport... biplace d’observation. Delage avait été frappé le 20 avril à Monaco par la vitesse stupéfiante atteinte par le petit biplan Sopwith « Tabloïd » pilot...ère de l’équipement impose à le moteur Le Rhône 9C qui vient... pertes aux aviateurs allemands que le haut commandement interdit à ses pilotes... d’études Nieuport. Toujours inspiré par le Sopwith « Tabloïd », il dessine pour... au moins concernant le devis de poids. Le nouveau petit chasseur Nieuport... Concurrent du Gnome 80 ch, le moteur Le Rhône 9C équipe... besoins de l’aviation militaire, le moteur Le Rhône 9C est produit... Daimler à Coventry. Au total, le moteur Le Rhône 9C est construit... la firme autrichienne Steyer Werke, le 9C a été également produit en Allemagne... 11 : caractéristiques techniques. (Source S.H.A.A.). Le 9J au combat. - Dès son homologation.... (Musée de l’Air). Le 9J est le moteur Le Rhône qui a été fabriqu... avant la guerre, produit le 9J sous le type Oberursel UI en... furent construits. Ce monoplan fut le premier chasseur de l’histoire à dépasser... à produire industriellement. Ci-dessous, le 18-cyl Le Rhône de 340..., Vickers FB12 Moteur supplanté par le 9J. Deperdussin de course. Deperdussin...



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... LOX tank Second-stage engine (LE-5B) First-stage LOX tank... for two first-stage engines (LE-7A) to enhance the launch capability... (SRB-A x 4 units) First-stage engine (LE-7A x 2 units) Fig. 1 Overview of the... LE-7A×2 112 (×2) 440 4 100 LE-7A×1 112 440 4 16.7 LE-5B 14 448 4 16.7 LE... IHI IA • Turbo pump • SRB-A (LE-7A, LE-5B) • Pyrotechnics • Reaction control equipment... two clustered main engine units (LE-7A). The development risk involved in... bottom to two systems • LE-7A engine • Two LE-7A engines common to H-IIA... test is conducted w ith t wo L E -7A eng i ne un it s i nst...



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... is employed for the LE-5A and the LE-5B engines. Turbo... were utilized as in the LE-X engine [2], which is almost the... alloy which was used for LE-7A combustion chamber. Material of support... by a model proven by the LE-7A. 5 American Institute of Aeronautics and... ratio 60 OTP 50 40 LE-7A LE-5B XRS-2200 25% aerospike.../weight ratio 70 50 40 LE-7A LE-5B XRS-2200 25% aerospike... 10 50 40 30 20 LE-7A LE-5B 20% lightweight aerospike 10...-weight ratio for the LE-7A engine, the LE-5B engine and the...-weight ratio for the LE-7A en-gine, the LE-5B engine and... an Isp about 3% larger than LE-5B engine, which is used... the same as that of LE-5B. Table 7 summarizes the results... produced about a 3% larger Isp than LE-5B engine, which is used... the same as that of LE-5B. References [1] Tomita, T. et al...



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... ways from its H-II precursor, LE-5A engine. It is powered by a simplified LE-5B LOX/LH2 engine, which... kN (14 tons) of thrust. LE-5B gimbals are used to... used for attitude control. Since LE-5B is a restartable engine, multiple... core liquid-fuel engine LE-7A is modified from LE-7 engine used for... LE-7A, but with a vastly simplified manufacturing process than the problem plagued LE... ways from its H-II precursor, LE-5A engine. It is powered by a simplified LE-5B LOX/LH2 engine, which... kN (14 tons) of thrust. LE-5B gimbals are used to... used for attitude control. Since LE-5B is a restartable engine, multiple... core liquid-fuel engine LE-7A is modified from LE-7 engine used for... LE-7A, but with a vastly simplified manufacturing process than the problem plagued LE...