Двигательная установка. LE-5B. [Редактировать]

Технические характеристики

#ХарактеристикаЗначение
1Длина, мм2540
2Тяга, тс14
3Удельный импульс, секунда450
4Масса, кг285
5Диаметр (максимальный), мм1691
6Соотношение компонентов (топлива)5.0:1
7Скорость вращения (турбины топлива), оборотов в минуту52000
8Скорость вращения (турбины окислителя), оборотов в минуту18000
9Степень расширения сопла111

Экономические характеристики

#ХарактеристикаДата измеренияЗначение
1Стоимость , млн. долл.4

Найдено 1000 документов по запросу «LE-5B». [Перейти к поиску]


Дата загрузки: 2017-06-15
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0.06/5
...  economica,  anche  per  predisporre  e  gestire  le  eventuali  misure  di  mitigazione/compensazione...  campionamento  delle  deposizioni  e  di  privilegiare  le  attività  di  monitoraggio degli inquinanti...  mitigazione.  Rimangono  comunque  in  essere  le  misure  mitigative  proattive  descritte  nella...  campionamento  delle  deposizioni  e  di  privilegiare  le  attività  di  monitoraggio  degli  inquinanti....)  rispetto  al  cantiere  (180°‐360°),  le  concentrazioni  misurate  risultano  confrontabili,  sia...  mitigazione.  Rimangono  comunque  in  essere  le  misure  mitigative  proattive  descritte  nella...  di  diverse  prescrizioni,  tra  le  quali  “le  attività rumorose dovranno essere eseguite...:00, con  interruzione tra le 12:00 e le 13:00”   Per quanto...  di  diverse  prescrizioni,  tra  le  quali  “le  attività rumorose dovranno essere eseguite...:00, con  interruzione tra le 12:00 e le 13:00”. Tale autorizzazione... è stata presente anche tra le 12:00 e le 13:00 (14 e 16...  di  diverse  prescrizioni,  tra  le  quali  “le  attività  rumorose  dovranno  essere  eseguite...:00,  con  interruzione tra le 12:00 e le 13:00”. Per quanto... orario.      Descrizione e messa  Le  prescrizioni  di  deroga  e  le  limitazioni  di  orario  per...  di  diverse  prescrizioni,  tra  le  quali  “le  attività rumorose dovranno essere eseguite...:00, con  interruzione tra le 12:00 e le 13:00”   Per quanto...  di  diverse  prescrizioni,  tra  le  quali  “le  attività rumorose dovranno essere eseguite...:00, con  interruzione  tra  le  12:00  e  le  13:00”.  Tale  autorizzazione... è stata presente anche tra le 12:00 e le 13:00 (14 e 16 novembre). Considerando  invece  tutte  le  attività  rumorose  (infissione,  piattaforma  a  ragno...  cui  sono  evidenziate  le  attività  di  monitoraggio  svolte  e  le  criticità  riscontrate,  prescrivendo...  è  stata  presente  anche  tra  le  12:00  e  le  13:00  (14  e  16  novembre).  Considerando  invece  tutte  le  attività  rumorose  (infissione,  piattaforma  a  ragno...  monitoraggio,  non  è  possibile  ancora  valutare  le  misure  di  Commenti e  Conclusioni   mitigazione... effettuate numerose indagini, riassumibili,  secondo le differenti tipologie, in:   Tipologia 1. Campagne...  “Rapporto  Finale  B5”  vengono  sintetizzate  le  informazioni  riportate  nei  diversi  rapporti...  Chioggia  (CHTF),  descrivendo  la  strumentazione  e  le  metodiche  di  campionamento e di analisi... vento e della durata, maggiormente influenzato le concentrazioni della  torbidità.  Relativamente  alle...  particolarmente  propizia,  date  le  basse  intensità di corrente e le conseguenti modeste concentrazioni...  utili  approfondimenti  a  riguardo,  estendendo  i  confronti  e  le  valutazioni  all’intero set di... Nicolò, non sono chiare le  ragioni per le quali i rilevatori non sono... corrispondenza  temporale  fra  i  dati  ornitici  e  le  registrazioni  delle  perturbazioni  associate  ai...  ad  ottobre,  di  Trachyscelis  aphodioides;  le  consistenze  registrate  a  Cà  Roman  e  Alberoni,  soprattutto...ò  raggiunte  a  Punta  Sabbioni.  Sensibilmente  inferiori  le  presenze  di  Otiorhynchus ferrarii, ad...  concessione”.  I  transetti  sono  localizzati  attraverso  le  coordinate  geografiche  di  inizio  e  fine...  corredati  da  una  discussione,  evidenziando  le  principali  emergenze  e  i  trend,  soprattutto  a  carico... monitoraggio, mettendoli in relazione con  le informazioni derivanti dalla cartografia, comprensive...  (Studio  B.6.72  B/5).  Per  la  biomassa  le  maggiori  variazioni  implicano  quasi  esclusivamente...  fanerogame  viene  ulteriormente  confermata analizzando le abbondanze degli organismi in relazione... e indice di Margalef (solo a  Lido);  • le dissimilarità riscontrate sono riconducibili sostanzialmente...  lagunari  –  V  fase”  riporta  le  attività  di  monitoraggio riguardanti le comunità di invertebrati... studi (Studi B.6.72 B/3, B/4 e  B/5);  ƒ le  liste  generali  e  le  note  riguardanti  le  specie  di  epifauna...à  invertita  in  quanto  le  repliche  A  e  soprattutto  B  presentano  le  abbondanze  più  elevate.  In... tutte  le repliche 4B (tranne quella di settembre 2009) e 5B di marzo...  sottogruppo  comprende  le  repliche 4C delle quattro campagne, le 5B di giugno, settembre...  delle  similarità/dissimilarità  osservate  tra  le  diverse  repliche,  considerando  i  dati  di... significativa (p<0,05) tra le comunità delle repliche 4B e 5B e  tra quelle 4C...,6%)  e  lo  zoobenthos  (da  4,7%  a  9,2%),  mentre  calano  le  diatomee  bentoniche  da  16,2% a 9,6%.    Pagina... è stata mai  rinvenuta  durante  i  campionamenti.  Le  coperture  registrate  sono  risultate  prossime...  monitoraggio  (dati  non  riportati).   Sebbene  le  considerazioni  riguardanti  la  torbidità  registrata...  altre  cause  quali  le  attività  antropiche  (particolarmente  rilevanti  le  attività  di  venericoltura... di fanerogame marine”.      Descrizione e messa  Le  misure  di  mitigazione predisposte  concernono...” delle specifiche schede.     Generalmente  i  commenti  e  le  osservazioni  per  questo  anno  di...



Дата загрузки: 2017-03-28
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0.07/5
... RS-68 Vulcain2 RD-259 LE-7A YF-21B S138 LOX... 266 engine RL10B-2 HM7B Breeze-M LE-5B YF-75 KVD-1 Propellant LOX... a higher performance engine than the LE-7 engine (specific impulse: 440s), which... specific impulse of 465s. Japan's LE-5B engine, with approximately the same... 448s. In comparison with the LE-B5, the performance of the.... The lower performance of the LE-B5 is attributed to the... higher than that of Japan's LE-7A (123kgf/cm2). ・ Japan: Japan... announced a development project for the LE-9 engine, aiming at high reliability...'s new mainstay launch vehicle. The LE-9 engine utilizes the large-scale... bleed cycle technology of the LE-X engine (propellant; LOX/LH2, thrust... are shown in Table 2-5b. Table 2-5b Evaluation of launch complex operability... technology are shown in Table 5-5b. Table 5-5a Evaluation of surface... are shown in Table 5-5b. Table 5-5b Evaluation of regolith-resistant space...



Дата загрузки: 2017-03-18
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0.1/5
... oxygen tank 2nd stage engine (LE-5B) 1st stage liquid oxygen tank... (SRB-A x 4 units) 15m リフトオフ 1st stage engine (LE-7A x 2 units) H-IIB Launch Vehicle... performed by the second stage LE-5B-2 engine idle mode combustion (by... 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... oxygen tank 2nd stage engine (LE-5B) 1st stage liquid oxygen tank....7 tons LE-5B 137 KN 448 seconds 4m 16.7 tons LE-5B 137 KN 448 seconds 5.2 m about 176 tons LE-7A...×2 440 seconds 4m About 100 tons LE-7A x 1 1098 KN 440 seconds... hydrogen tank 15m 1st stage engine (LE-7A x 2) H-IIB Launch Vehicle SRB...)) CFT/ GTV L / O Thick wall tank LE-7A engine Combustion gas L/V side... Payload fairing C B D SRB-A 1st pair LE-5B Engine 2nd stage A SRB-A 2nd...



Дата загрузки: 2017-02-23
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0.07/5
...* 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.... 1. Introduction The development of the LE-7A engine, an improved model of the LE-7, was started in 1994 with... of the LE-5B engine, an improved model of the LE-5A, was... the five units of the LE-5B engine and the development program... Ishikawajima-Harima Heavy Industries Fig. 1 LE-7A engine *1 Nagoya Guidance & Propulsion..., respectively. 2. Outline of engine 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-7 engine which was used as... the H-II launch vehicle. The LE-7A engine operates on the... cycle) as that of the LE-7 but has higher reliability, lower... 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... from 12.4 tons of the LE-5A. A change of engine cycle... of the development 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 started in... which were conducted on the LE-7 engine to confirm applicability of... for the development of the LE-7A engine. The designing work... 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... fluctuation shown by the conventional LE-7 engine of the H-II launch vehicle. The development of the LE-7A engine is still going... 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 g in e d ev e lopment schedule. The development of the LE-5B engine was started in 1994. In 1955, an LE-5A... the injector designed for the LE-5B engine and the combustion chamber... the combustion chamber of the LE-5A engine caused an external... trouble would happen to the LE-5B engine, and accordingly no countermeasures... taken against it, because the LE-5B engine had already employed the... to finish development of the LE-5B engine when the phase-2 engine..., there was a possibility that the LE-5B engine might experience a restart thrust... in the operation of the LE-5A engine. On reflection, it... of No. 8 H-II vehicle. The LE-5B engine was installed on No... For the development of the LE-7A engine, all problems revealed in the development of the LE-7 engine, including durability of high... the schedule for improvement. The LE-5B engine has passed the development... et al., Development of Improved LE-7, Mitsubishi Juko Giho Vol.33... of H-IIA Rocket Engine (LE7A, LE-5B), Mitsubishi Juko Giho Vol.35....5 (1998) p.344 (3) Kakuma, Y. et al., LE-5B Engine Development, AIAA-20003775 Mitsubishi...



Дата загрузки: 2017-02-06
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0.2/5
... as operational experience with the LE-5B rocket motor are described. Based... ENGINES Presently, the Japanese LE-5A and LE-5B engines are the only flight-proven bleed cycle engines. The LE... 1994. The more cost efficient LE-5B is in operation with the... of LE-5A and LE-5B engines are shown in Table 1. The LE-5A... chamber and nozzle (Figure 1). The LE-5B turbines are instead driven by... exchange of the chamber, the LE-5B chamber structure was changed from... to electrodeposited copper. Consequently the LE-5B turbine drive gas temperature has... the LE-5B is much lower than that of the LE-5A. LE-5A LE-5B... Bleed In another step, the LE-5B chamber length was increased by... by 1%. Since development completion, the LE-5B powers the second stage of... Japanese LE-5B engine 3 Table 1: Characteristics of the Japanese LE-5A and LE-5B engines [9], [10] 3.1 The feasibility model of LE-5B, being... engineering model chamber of the LE-5B was designed using the measured.... The test data of the LE-5B engineering model indicated that the... speeds. Figure 1: Schematic of Japanese LE-5A engine 2 American Institute of... demonstrated by the operational Japanese LE-5B engine, such flow mixing is.... However, successful operation of the LE-5B engine has been demonstrated at... already realized in the Japanese LE-5 motor, the viability of the... Astronautics, 1992. 9. Kakuma, Y. et al.: LE-5B Engine Development, AIAA-2000-3775...-August 2002 16. Bonnal, Ch.; Le Fur, Th.; Levy, Y.; Eymard, M.; Pascal...



Дата загрузки: 2017-05-21
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0.03/5
.../14 Ariane 5 ECA Europe Astra 5B GEO Success 4/18/14 Falcon... core stage powered by a single LE-7A engine, two large liquid... first stage powered by two LE-7A engines and supplemented by... a second stage powered by an LE-5B engine. H-IIA 202 There are... (355,198) 137 (30,799) LE-7A -- -- LE-5B Engine manufacturer Mitsubishi -- -- Mitsubishi... Above 5,400 kg ABS 2 Astra 5B MEASAT 3B Intelsat 30 DirecTV...) and the second on Astra 5B (built by EADS Astrium). There... Ariane 5 Hotbird 8 Proton M DM5 Skynet 5B Ariane 5 DM5 Superbird 7 Ariane 5 Measat... 5 DM2 NSS 12 Ariane 5 Arabsat 5B Proton M Quetzsat Proton M Terrestar 1 Ariane... 1R LM-3B DM2 Luch 5B Proton M DM1 Amos 5 Proton M DM1... S S S S S S Proton M Baikonur Ariane 5 ECA * Astra 5B Guiana Space Center * Amazonas 4A...



Дата загрузки: 2016-08-10
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0.2/5
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



Дата загрузки: 2017-02-06
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0.09/5
... PRESENTE MANUALE I.I Avvertenze generali ATTENZIONE! Le descrizioni precedute da questo simbolo..., incidenti, infortuni gravi o mortali. NOTA Le descrizioni precedute da questo simbolo... portabiciclette dell’autoveicolo, potrebbe danneggiare le sospensioni. Se al controllo della... danni alla sospensione. Rispettare le leggi e le disposizioni in vigore nel paese... sempre tutti i segnali stradali, le insegne e le disposizioni durante la corsa. Indossare... in questo paragrafo. Controllare che le sospensioni non presentino perdite o tracce... sia allentato o svitato. Assicurarsi che le ruote siano centrate perfettamente. Far...à comporta sollecitazioni della sospensione per le quali non e stata progettata. Anche... a disco. 2. INFORMAZIONI TECNICHE 2.1 Elemento elastico Le forcelle Marzocchi utilizzano al loro... volume olio interno. 2.3 Lubrificazione e raffreddamento Le forcelle possono adottare differenti tecnologie... il funzionamento idraulico, assolve tutte le esigenze di lubrificazione e raffreddamento delle... si ottiene durante l’utilizzo, quando le sollecitazioni e gli affondi della forcella... dello stelo fino a raggiungere e lubrificare le boccole. 2.4 Boccole di guida e anelli... Post Mount, assicurarsi di rimuovere le apposite pellicole protettive presenti sui..., con una chiave dinamometrica, seguendo le specifiche del produttore dell’impianto... dovrebbe oscillare né lateralmente né verticalmente. Per le specifiche corrette, consultare il libretto... dovrebbe oscillare né lateralmente né verticalmente. Per le specifiche corrette, consultare il libretto... dovrebbe oscillare né lateralmente né verticalmente. Per le specifiche corrette, consultare il libretto... dovrebbe oscillare né lateralmente né verticalmente. Per le specifiche corrette, consultare il libretto... e 8B di Figura 8). • Far corrispondere le forature di ciascun componente. • Bloccare... Tabella 7 - Pressioni aria consigliate ATTENZIONE! Le operazioni elencate di seguito ed... aveva acquistato, descrivendogli il difetto e le ragioni della richiesta di intervento... presente garanzia annulla e sostituisce tutte le garanzie implicite od esplicite, dichiarazioni... precedenza e costituisce l’intero accordo tra le parti con riferimento alla garanzia... 1.1 Conventions 1.1.1 Orientation of the fork 2 R F 3 1 K C A LE FT O N T 1 HT B RIG BOTTOM WARNING.... ou contactez directement le Centre d’Assistance agréé Marzocchi le plus proche. Vous... pédales, les poignées, le guidon, le cadre et la selle, sont... elle comporte des sauts et le franchissement «d’obstacles artificiels » voire construits... une conduite performante et libre. Le contrôle de la détente est... partie supérieure. Le système permet le contrôle des grandes vitesse... le système hydraulique entry level. Le système R permet le contrôle et le réglage de la détente à travers le...érieure. R Damper Le système R permet le contrôle et le réglage de la détente à travers le bouton de... cartouche a rebond fixe permet le contrôle hydraulique de la détente utilisant... parfaitement testés. Le système contrôle la compression. Le dispositif de réglage... périodiquement. 30 3. INSTALLATION 3.1 Installation sur le cadre La fourche est fournie... la base et le jeu entre le fourreau et le châssis sont..., la roue et vissez-le dans le bas de fourche gauche (voir... le 5A - Figure 5). • Installez l’axe par le bon côté. (Voir le 5A - Figure 5). • Traversez le...-ci dans le sens des aiguilles d’une montre (voir le 5B - Figure 5) jusqu... l’écrou légèrement afin de le placer le levier dans la direction désir... fin de l’axe, fermez le levier (voir le 5C- Figure 5) ; de cette...ée à la main, si vous le souhaitez. Ouvrez le serrage rapide. Afin d’augmenter... vis sur l’axe, tournez le dans le sens des aiguilles d’une montre... desserrages intempestifs pendant l’utilisation (voir le 5C - Figure 5). • Vérifiez l’alignement correct... la suite, ayant fermé le système. Le décalage du levier d’attache... la roue causant le desserrage de l’axe. 5A 5B 5C Figure 5 - Installation... rigoureusement les instructions ciaprès: • Installez le segment de montage inférieur... 8C - Figure 8). • Installez le cintre en le centrant dans le segment de montage... des prescriptions contenues dans le Manuel relatif à le produit. La présente... aux indications contenues dans le Manuel relatif à le produit. 5.1.2 ACHETEUR: La pr... devra exclusivement contacter le Revendeur autorisé où il a acheté le produit ou un... entre le client final et le concessionnaire auprès duquel le client a acheté le syst... S.r.l s’engage, à sa discrétion, à le réparer ou à le remplacer gratuitement, dans un... les instructions contenues dans le Manuel relatif à le produit et figurant sur... aux indications contenues dans le Manuel relatif à le produit. 5.2.2 ACHETEUR: La pr...ément aux indications contenues dans le « Manuel d’instructions ». 5.2.9 AUTRES DROITS: Cette... cădeţi şi că sunteţi suficient de experimentat să le realizaţi. POLSKI I. UŻYWANIE INSTRUKCJI I.I Og... vzmetenje ni bilo izdelano. Izvajajte le skoke s primerno urejenimi doskočišči, katera...



Дата загрузки: 2017-04-23
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0.06/5
... with the inflow profile in the absence of fuel... with the inflow profile, which justifies the choice... Engine meng,1 (n) [kg] H-2-1 LE-7 1714 (1) 1800 (1) H-2A-1 LE-7A 1800 (2) H-2A LRB LE-7A 625 (1) Ariane H155... Centaur IIA Centaur G N1 Block R LE-5 LE-5EC LE-5B Ariane 5 ESC A HM7-A HM7...-4 RL-10A-3A RD-56 LE-5 LE-5A LE-5B Vinci meng,3 (n) [kg] 149... probably distorts the CO profile outside the observational bounds [2]. Nitrogen... [54]–[56]. The H2 O profile was fixed to match the... cyan asterisks mark the profile inferred from 1991 space telescope... (1011 cm−2 s−1 ) Model Calculation < 0.8a , < 1.5b ∼ 2 − 10c ‡ NO mixing ratio (ppb..., and G. LeBras, “Spectres d-absorption dans le proche ultraviolet de CS2 et.... It is evident from Fig. 5b that the system is capable... in Fig. 5a and Fig. 5b, respectively. The 20 FOV sensor... in Fig. 5a and Fig. 5b respectively. Observations taken at a glider... in Fig. 5a and Fig. 5b respectively. Cross-Country Exploration The...



Дата загрузки: 2017-02-06
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... 2011) 36 Development of the LE-X Engine MASAHIRO ATSUMI*1 KIMITO YOSHIKAWA... LE-5B engine, the second-stage engine of H-IIA launch vehicle. The LE-5B... was first adapted for the LE-5A engine, which was an improved version of the LE-5 engine. The LE-5 was the first Japanese... was also adapted for the LE-5B engine, and more recently, for... for providing the highly reliable LE-X engine. |1. Introduction In 1999, H-II... explosion in the first-stage LE-7 engine during flight. For the...-stage vehicle, in which the LE-5B was installed, was disconnected from.... However, under such conditions, the LE-5B engine started normally and provided... and later adopted for the LE-5B engine. This engine cycle has.... We are currently developing an LE-X first-stage engine for next... obtain high reliability for the LE-X engine. *1 General Manager, Guidance & Propulsion... using the EBC was the LE-5A used in the second... stage of the LE-5, the predecessor of the LE-5A. Figure 4 (1) Developmental... of expander bleed engines LE-5 engine The LE-5 engine was the first... an explosive type). In the LE-5, the starter was omitted for... combustion chamber adopted in the LE-5 was not sufficient to drive..., a proprietary system invented in Japan. (2) LE-5A engine Study of the expander bleed operation in the LE-5 engine demonstrated that a sufficient Mitsubishi... performance. Thus, development of the LE-5A engine was started. In the LE-5A, the heat was absorbed... thrust and performance. (3) LE-5B engine In the LE-5B engine, the design was... from 3.6 MPa, used in the LE-5B, to 14 MPa, and ISP... to develop the first-stage LE-X engine for next-generation main... the development of the entire LE-X engine. Figure 6 3.1 Approach using high... good productivity. 3.3 Development of the LE-X Engine for a Next-Generation Main... In the development of the LE-X engine, the design process developed... to the development of the LE-X engine, is illustrated in Figure... 7 High-reliability design process for LE-X development Figure 8 Calculation of failure... key factors considered for the LE-X engine were heat absorption and... past. On the other hand, LE-X is aiming for short-period...’s original expander bleed engine. The LE-X engine, which integrates these technologies... engine. References 1 2 3 4 5 6 Ryuichi Sekita, The LE-5Series Development, Approach to High..., Tadaoki Onga, LE-5B Engine Development, AIAA 2000-3775 Akihide Kurosu, LE- X - Japanese... Sunakawa, Akihide Kurosu, Overview of LE-X Research and Development, ISTS2011 William Sack, LE-X Prototype Main Combustion Chamber Development...