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503:. The engine operated on an open gas-generator cycle and utilized a regeneratively cooled combustion chamber. For each thrust chamber assembly, a single high-speed turbine drove the lower-speed centrifugal fuel and oxidizer pumps through gearing, a configuration designed for high turbopump efficiency. This lowered fuel use in the gas generator and improved specific impulse. The LR87 served as a template for the
585:
36:
1578:
562:, the LR87-3 burned liquid oxygen and RP-1. Following the retirement of the Titan missile program, these engines saw no further use. The LR87-3 was also operated with NTO/Aerozine 50 and ground tested with LOX/H2 (with a new fuel pump), making it one of very few engines to have been run on three different propellant combinations.
954:
Modified to burn liquid oxygen and liquid hydrogen. The development coincided with other variants of the late 1950s. Compared to the -3, it had a number of changes associated with the use of lighter and colder liquid hydrogen. The fuel injectors were greatly modified, and the RP-1 pump was replaced
1022:
The LR87 was also tested with a gelled
Dinitrogen Tetroxide / Alumizine fuel. Though the earlier tests with the LR87 were terminated due to combustion instabilities and funding restraints development of gelled fuel and oxidizers continued to produce fuels for engines currently used in space.
867:
640:, replacing the heavy tanks of cold helium gas. Instead, the fuel tank was pressurized with fuel-rich gas-generator exhaust, and the oxidizer tank with NTO evaporated in a heat exchanger using turbine exhaust.
545:, which were larger, more capable space launch vehicles, the LR87 was modified further. Thrust and nozzle area ratio were progressively increased, requiring heavier turbopumps, pipes, and other parts.
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propellants, which do not need an independent ignition system. The engines also had simpler controls, solid-propellant cartridges to start the turbopumps, simplified injectors, and
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713:. The performance was similar to the previous version, only reducing the chamber pressure and nozzle thrust to meet human-rating requirements. This version was only used on the
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The LR87 was a fixed-thrust engine, which could not be throttled or restarted in flight. The LR87 delivered approximately 1,900 kilonewtons (430,000 pounds) of thrust in its
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632:. This change was done for storability at the request of the US Air Force. The engine was generally lighter and simpler than its predecessor, partly due to the use of
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machinery, it is considered a single unit and was never flown as a single combustion chamber engine or designed for this. The LR87 first flew in 1959.
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with a purpose-designed single-stage hydrogen pump. Developed 1958–1961, a total of 52 static tests were performed without serious issue.
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at room temperature. This allowed Titan II missiles to be kept fully fueled and ready to launch on short notice.
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missiles were decommissioned and became available as launch vehicles. Their engines were modified for this use.
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took part in the selection process for a new engine for the second stage of the
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4203:* Different versions of the engine use different propellant combinations
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Height at top of turbopump assembly; 3.84m to top of thrust structure.
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1722:. Reston, Va.: American Institute of Aeronautics and Astronautics.
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464:. Composed of twin motors with separate combustion chambers and
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27:
American rocket engine family used on Titan missile first stages
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975:. Lessons learned were used during development of the Aerojet
918:
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315:
261:
29:
709:. The LR87-7 had added redundancies and safety features for
1517:
Per thrust chamber; two are mounted together on each Titan.
507:, which was used in the second stage of the Titan missile.
967:. Though LR87 LH2 was the best in 10 out of 11 criteria,
518:
burned RP-1 and liquid oxygen. Because liquid oxygen is
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60:. Unsourced material may be challenged and removed.
907:National Museum of the United States Air Force
514:configuration. Early LR87 engines used on the
2855:
2298:
2121:
1951:"A Comprehensive Study on Gelled Propellants"
1876:
1874:
8:
4245:Rocket engines using the gas-generator cycle
471:The LR87 was developed in the late 1950s by
132:
1719:History of liquid propellant rocket engines
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1632:
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875:Wings Over the Rockies Air and Space Museum
705:The LR87-5 was adapted to the needs of the
4235:Rocket engines using hypergolic propellant
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1931:"Gelled dinitrogen tetroxide composition"
1755:
1753:
120:Learn how and when to remove this message
4240:Rocket engines using hydrogen propellant
4230:Rocket engines using kerosene propellant
1711:
1709:
1707:
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1701:
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620:Instead of liquid oxygen and RP-1, the
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1859:from the original on 12 September 2017
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1544:
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1513:
1511:
217:
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891:Evergreen Aviation & Space Museum
849:Used on Titan 24B, 34B, IIIBS, IIID,
608:Evergreen Aviation & Space Museum
361:40–59 bar (4,000–5,900 kPa)
7:
2893:Comparison of orbital rocket engines
1638:"Aerojet-General LR87 Liquid Rocket"
979:. It was only built with 1 chamber.
399:3.13–3.84 m (10.3–12.6 ft)
58:adding citations to reliable sources
4250:Rocket engines of the United States
1642:National Museum of the US Air Force
1505:ICBM; orbital Titan II launch 1968.
677:Kansas Cosmosphere and Space Center
458:intercontinental ballistic missiles
25:
2096:National Museum of the USAF, Ohio
416:1.14 m (3 ft 9 in)
3904:
2344:
1576:
990:
922:
898:
882:
866:
857:. The LR-87-11A was used on the
817:
762:
738:
722:
684:
668:
652:
599:
583:
567:
346:: 1,900 kN (430,000 lb
154:
34:
1607:Rocket engine using liquid fuel
45:needs additional citations for
2182:Pratt & Whitney Rocketdyne
1:
3689:RD-0202 to 0206, 0208 to 0213
491:(a 50:50 mixture by mass of
453:used on the first stages of
2137:Aerojet Rocketdyne Holdings
576:Steven F. Udvar-Hazy Center
424:839 kg (1,850 lb)
383:256 s (2.51 km/s)
4266:
1716:Sutton, George P. (2006).
1440:Coefficient of thrust, SL
711:human-rating certification
372:290 s (2.8 km/s)
4199:
3902:
2888:
2342:
2091:Encyclopedia Astronautica
1849:"Titan III/IV Propulsion"
1420:Coefficient of Thrust, V
638:autogenous pressurization
137:
3734:RD-250 to 252, 261, 262
405:: 4 m (13 ft)
971:selected Rocketdyne's
745:Titan II GLV LR87-7 (
729:Titan II GLV LR87-7 (
4210:are under development
3598:YF-20, 21, 22, 24, 25
3377:RD-107, 108, 117, 118
1348:58.3 atm (59.07 bar)
1340:53.3 atm (54.01 bar)
499:), and liquid oxygen/
2429:Commercial Titan III
1399:Oxidizer/fuel ratio
747:Kennedy Space Center
731:Kennedy Space Center
661:Titan Missile Museum
54:improve this article
3699:RD-0216, 0217, 0235
3362:RD-0107, 0108, 0110
2820:Pratt & Whitney
2226:Aerojet General X-8
2063:www.astronautix.com
2034:www.astronautix.com
1975:www.astronautix.com
1886:www.astronautix.com
1823:www.astronautix.com
1794:www.astronautix.com
1765:www.astronautix.com
643:Beginning in 1984,
134:
2177:Aerojet Rocketdyne
1855:. Norbert Brügge.
1002:. You can help by
934:. You can help by
829:. You can help by
774:. You can help by
626:nitrogen tetroxide
485:nitrogen tetroxide
241:Liquid-fuel engine
4217:
4216:
4159:Space Shuttle SRB
3900:
3899:
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2280:
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1847:Brügge, Norbert.
1680:on August 5, 2014
1495:
1494:
1334:Chamber pressure
1094:N2O4/Aerozine 50
1091:N2O4/Aerozine 50
1088:N2O4/Aerozine 50
1085:N2O4/Aerozine 50
1027:Engine comparison
1020:
1019:
952:
951:
847:
846:
810:LR87-11/LR-87-11A
792:
791:
691:Titan II LR87-5 (
675:Titan II LR87-5 (
659:Titan II LR87-5 (
606:Titan I LR87-3 (
448:liquid-propellant
440:
439:
340:Thrust, sea-level
150:Country of origin
130:
129:
122:
104:
16:(Redirected from
4257:
3908:
3907:
3744:RD-263, 268, 273
3675:along other LREs
3537:
3397:RD-191, 151, 181
3261:
2919:
2910:
2864:
2857:
2850:
2841:
2784:
2655:
2512:
2373:LGM-25C Titan II
2358:
2348:
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2272:OMNOVA Solutions
2255:Related articles
2151:Thomas F. O'Neil
2130:
2123:
2116:
2107:
2078:
2077:
2075:
2074:
2065:. Archived from
2055:
2049:
2048:
2046:
2045:
2036:. Archived from
2026:
2020:
2019:
2017:
2015:
2010:on March 8, 2016
2006:. Archived from
1996:
1990:
1989:
1987:
1986:
1977:. Archived from
1967:
1961:
1960:
1958:
1957:
1947:
1941:
1940:
1938:
1937:
1927:
1921:
1920:
1918:
1917:
1911:"LR87 Alumazine"
1907:
1901:
1900:
1898:
1897:
1888:. Archived from
1878:
1869:
1868:
1866:
1864:
1844:
1838:
1837:
1835:
1834:
1825:. Archived from
1815:
1809:
1808:
1806:
1805:
1796:. Archived from
1786:
1780:
1779:
1777:
1776:
1767:. Archived from
1757:
1748:
1747:
1745:
1744:
1713:
1690:
1689:
1687:
1685:
1676:. Archived from
1666:
1657:
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1654:
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1644:. Archived from
1634:
1586:
1581:
1580:
1579:
1563:
1560:
1554:
1548:
1537:
1531:
1518:
1515:
1506:
1503:
1472:824.7 kg/s
1460:Propellant flow
1031:
1015:
1012:
994:
987:
983:LR87 / Alumazine
947:
944:
926:
919:
902:
886:
870:
842:
839:
821:
814:
787:
784:
766:
759:
742:
726:
688:
672:
656:
603:
590:Titan I LR87-3 (
587:
574:Titan I LR87-3 (
571:
446:was an American
378:Specific impulse
367:Specific impulse
313:
299:
286:
219:
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191:
178:
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125:
118:
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62:
38:
30:
21:
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4219:
4218:
4213:
4195:
3916:
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3905:
3896:
3834:
3724:RD-0255 to 0257
3719:RD-0243 to 0245
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3570:
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3524:
3265:
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2904:
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2882:launch vehicles
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2799:Lockheed Martin
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2642:
2591:
2553:
2499:
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2377:
2368:HGM-25A Titan I
2349:
2340:
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2311:
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2209:
2205:Bristol Aerojet
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2165:
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1557:
1549:
1540:
1532:
1521:
1516:
1509:
1504:
1500:
1224:
1173:
1159:1218.8 kN
1154:1086.1 kN
1151:1096.8 kN
1029:
1016:
1010:
1007:
1000:needs expansion
985:
948:
942:
939:
932:needs expansion
917:
910:
903:
894:
887:
878:
871:
843:
837:
834:
827:needs expansion
812:
788:
782:
779:
772:needs expansion
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750:
743:
734:
727:
703:
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689:
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673:
664:
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501:liquid hydrogen
462:launch vehicles
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2871:Rocket engines
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2516:Cape Canaveral
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2500:
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2455:Titan-Vanguard
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2382:Launch Systems
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2198:Joint ventures
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2189:
2184:
2173:
2171:
2167:
2166:
2164:
2163:
2158:
2156:Dan A. Kimball
2153:
2147:
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2135:
2133:
2132:
2125:
2118:
2110:
2104:
2103:
2098:
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2085:External links
2083:
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1602:Titan (rocket)
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1465:750 kg/s
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1212:
1211:968.4 kN
1209:
1208:956.1 kN
1206:
1205:946.7 kN
1203:
1202:956.5 kN
1200:
1199:647.9 kN
1197:
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1148:733.9 kN
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1057:Aerojet Model
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707:Gemini program
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69:"Aerojet LR87"
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3858:RD-211 to 214
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3729:RD-215 to 219
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3704:RD-0233, 0234
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3694:RD-0207, 0214
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3673:Paektusan LRE
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3357:RD-0105, 0109
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3041:KVD-1 (RD-56)
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2800:
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2780:Manufacturers
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2631:
2629:
2628:Davis-Monthan
2626:
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2619:
2616:
2614:
2611:
2609:
2608:Mountain Home
2606:
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2319:Main articles
2317:
2313:Titan rockets
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2117:
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2111:
2108:
2102:
2099:
2097:
2094:
2092:
2089:
2088:
2084:
2069:on 2021-08-27
2068:
2064:
2060:
2054:
2051:
2040:on 2021-08-27
2039:
2035:
2031:
2025:
2022:
2009:
2005:
2001:
1995:
1992:
1981:on 2021-08-27
1980:
1976:
1972:
1966:
1963:
1952:
1946:
1943:
1932:
1926:
1923:
1912:
1906:
1903:
1892:on 2021-08-27
1891:
1887:
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1840:
1829:on 2021-04-23
1828:
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1729:1-56347-649-5
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1132:
1130:
1127:
1125:Number built
1124:
1123:
1119:
1116:
1113:
1110:
1107:
1104:
1102:First flight
1101:
1100:
1096:
1093:
1090:
1087:
1084:
1082:LOX/Kerosene
1081:
1078:
1077:
1074:
1071:
1068:
1065:
1062:
1059:
1056:
1055:
1051:
1048:
1045:
1042:
1039:
1036:
1033:
1032:
1026:
1024:
1014:
1005:
1001:
998:This section
996:
993:
989:
988:
982:
980:
978:
974:
970:
966:
962:
958:
946:
937:
933:
930:This section
928:
925:
921:
920:
914:
908:
901:
896:
892:
885:
880:
876:
869:
864:
862:
860:
856:
852:
841:
832:
828:
825:This section
823:
820:
816:
815:
809:
807:
805:
801:
797:
786:
777:
773:
770:This section
768:
765:
761:
760:
754:
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732:
725:
720:
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708:
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529:
525:
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513:
508:
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502:
498:
494:
490:
486:
482:
478:
477:liquid oxygen
474:
469:
467:
463:
459:
456:
452:
451:rocket engine
449:
445:
436:
432:
427:
423:
419:
415:
411:
404:
401:
398:
397:
395:
391:
386:
382:
379:
375:
371:
368:
364:
360:
358:
353:
345:
342:
338:
333:
330:
329:Gas-generator
327:
323:
317:
312:
304:
301:
298:
285:
280:
276:
272:
268:
265:
263:
259:
255:
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242:
238:
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231:
227:
224:
221:
214:
210:
206:
203:
200:
196:
185:
181:
170:
166:
163:
162:United States
152:
148:
141:
136:
124:
121:
113:
102:
99:
95:
92:
88:
85:
81:
78:
74:
71: –
70:
66:
65:Find sources:
59:
55:
49:
48:
43:This article
41:
37:
32:
31:
19:
4207:
3748:
3669:North Korea
3440:
3433:
3401:
3329:
3317:
3310:
3288:
3237:
3230:
3218:
3206:
3199:
3192:
3170:
3163:
3156:
3139:
3132:
3125:
3069:
3062:
3050:
3028:
2971:
2964:
2875:solid motors
2689:Upper stages
2508:Launch sites
2389:Titan II GLV
2326:Titan family
2267:General Tire
2240:
2170:Subsidiaries
2161:Robert Truax
2101:Aerojet LR87
2071:. Retrieved
2067:the original
2062:
2053:
2042:. Retrieved
2038:the original
2033:
2024:
2012:. Retrieved
2008:the original
2003:
1994:
1983:. Retrieved
1979:the original
1974:
1965:
1954:. Retrieved
1945:
1934:. Retrieved
1925:
1914:. Retrieved
1905:
1894:. Retrieved
1890:the original
1885:
1861:. Retrieved
1852:
1842:
1831:. Retrieved
1827:the original
1822:
1813:
1802:. Retrieved
1798:the original
1793:
1784:
1773:. Retrieved
1769:the original
1764:
1741:. Retrieved
1718:
1682:. Retrieved
1678:the original
1673:
1650:. Retrieved
1646:the original
1641:
1584:Space portal
1558:
1501:
1329:700 kg
1326:758 kg
1321:713 kg
1318:739 kg
1315:839 kg
1219:
1214:578 kN
1168:
1162:667 kN
1021:
1011:October 2022
1008:
1004:adding to it
999:
953:
940:
936:adding to it
931:
848:
835:
831:adding to it
826:
794:Used on the
793:
780:
776:adding to it
771:
715:Titan II GLV
704:
642:
619:
558:Used on the
557:
536:
509:
470:
443:
441:
402:
343:
302:
278:
274:
270:
266:
253:
198:Manufacturer
168:First flight
144:XLR87 engine
116:
107:
97:
90:
83:
76:
64:
52:Please help
47:verification
44:
4206:Engines in
3853:RD-109, 119
3791:RD-864, 869
3776:RD-854, 861
3739:RD-253, 275
3387:RD-170, 171
2638:Little Rock
2331:SM-68 Titan
2231:Aerozine 50
2004:Astronautix
1674:Astronautix
1355:Area ratio
1196:Thrust, SL
905:LR-87-11A (
889:LR-87-11A (
873:LR-87-11A (
630:Aerozine 50
592:Cordele, GA
489:Aerozine 50
380:, sea-level
335:Performance
284:Aerozine 50
216:Associated
211:Main engine
208:Application
183:Last flight
4224:Categories
3593:YF-1, 2, 3
3541:Hypergolic
3513:Rutherford
3232:Prometheus
3194:Archimedes
2651:Components
2559:Vandenberg
2490:Titan IIIM
2485:Titan IIIL
2414:Titan IIIE
2409:Titan IIID
2404:Titan IIIC
2399:Titan IIIB
2394:Titan IIIA
2246:Sea Dragon
2187:Rocketdyne
2073:2021-08-27
2044:2021-08-27
1985:2021-08-27
1956:2022-10-29
1936:2022-10-29
1916:2022-10-29
1896:2021-08-27
1882:"LR87 LH2"
1833:2021-08-21
1804:2021-08-22
1775:2021-08-22
1743:2021-08-22
1684:January 6,
1652:2010-12-25
1613:References
1343:47.00 bar
1337:40.00 bar
1247:Burn time
1145:Thrust, V
943:April 2014
838:April 2014
796:Titan IIIA
783:April 2014
634:hypergolic
528:hypergolic
512:hypergolic
434:References
429:References
388:Dimensions
247:Propellant
80:newspapers
4134:Castor 30
4014:Zefiro 40
4009:Zefiro 23
3950:SpaB-140C
3347:NK-33, 44
3257:cryogenic
3103:Methalox
2922:Hydrolox
2914:Cryogenic
2721:Transtage
2633:McConnell
2618:Ellsworth
2475:Titan IIS
2470:Titan IIL
2465:Titan IIB
2424:Titan 23G
2419:Titan 34D
2059:"LR87-11"
2014:April 20,
1853:B14643.de
1819:"Titan I"
1552:sea level
1290:Diameter
1072:AJ23-139
1069:AJ23-136
1066:AJ23-134
1063:AJ23-132
1060:AJ23-130
1052:LR87 LH2
961:Saturn IB
539:Titan III
520:cryogenic
493:hydrazine
466:turbopump
229:Successor
110:June 2014
4149:Orbus-21
4004:Zefiro 9
3767:Ukraine
3545:Aerozine
3533:Storable
3425:Ukraine
3367:RD-0110R
3264:Kerolox
2752:Orbus 21
2658:Boosters
2549:(S)LC-41
2544:(S)LC-40
2434:Titan IV
2361:Missiles
2336:Launches
2236:Aquarius
2214:Products
2030:"LR87-9"
2000:"LR87-7"
1971:"LR87-3"
1857:Archived
1738:63680957
1670:"LR87-5"
1570:See also
1097:LOX/LH2
965:Saturn V
915:LR87 LH2
859:Titan IV
853:, 34D7,
645:Titan II
622:Titan II
549:Variants
537:For the
532:storable
524:Titan II
421:Dry mass
413:Diameter
403:LR87 LH2
369:, vacuum
357:pressure
355:Chamber
303:LR87 LH2
4208:italics
4169:Star 48
4164:Star 37
4144:Orbus-6
4065:Israel
3999:Waxwing
3955:Europe
3947:SpaB-65
3849:Russia
3714:RD-0237
3709:RD-0236
3680:Russia
3659:Israel
3619:Europe
3463:Kestrel
3409:S1.5400
3372:RD-0124
3338:Russia
3331:SCE-200
3227:Europe
3220:RD-0169
3215:Russia
3141:Longyun
3134:Lingyun
3052:RD-0146
3046:RD-0120
3037:Russia
2994:Vulcain
2980:Europe
2903:Liquid
2879:orbital
2825:Thiokol
2815:Aerojet
2808:Engines
2747:Orbus 6
2730:Engines
2711:Star-37
2701:Centaur
2495:Titan V
2460:Titan-C
2443:Unbuilt
2354:Rockets
2262:Aerojet
2221:Aerobee
1863:20 June
1479:Source
1443:1.6453
1423:1.8453
1391:163.96
1386:155.33
1383:151.34
1377:TWR, V
1307:1.14 m
1268:Height
1049:LR87-11
957:Aerojet
560:Titan I
516:Titan I
473:Aerojet
344:LR87-11
279:LR87-11
202:Aerojet
188: (
173: (
94:scholar
4124:AJ-60A
4089:KM-V2b
4080:Japan
4054:Salman
4020:India
3994:Topaze
3959:Mage 1
3924:China
3915:Solid
3822:TR-201
3786:RD-856
3781:RD-855
3771:RD-843
3761:S5.98M
3750:RD-270
3644:India
3638:Viking
3628:Astris
3623:Aestus
3613:YF-50D
3589:China
3498:RS-27A
3488:Merlin
3478:LR-105
3442:RD-810
3435:RD-801
3419:TEPREL
3415:Spain
3403:RD-193
3392:RD-180
3382:RD-120
3326:India
3319:Welkin
3312:YF-130
3306:YF-115
3301:YF-102
3296:YF-100
3280:China
3208:Aeon R
3201:Aeon 1
3188:Raptor
3172:YF-215
3165:YF-209
3158:TQ-15A
3122:China
3015:Japan
3004:CE-7.5
3000:India
2955:YF-75D
2941:China
2794:Martin
2787:Rocket
2742:B-8096
2675:UA1207
2670:UA1206
2665:UA1205
2603:Larson
2577:LC-395
2480:Soltan
2144:People
1790:"LR91"
1761:"LR87"
1736:
1726:
1535:vacuum
1394:97.14
1304:1.14m
1299:1.53m
1296:1.14m
1293:1.53m
1282:3.13m
1277:3.13m
1274:3.13m
1271:3.13m
1242:350 s
1046:LR87-9
1043:LR87-7
1040:LR87-5
1037:LR87-3
1034:Engine
802:, and
755:LR87-9
701:LR87-7
616:LR87-5
554:LR87-3
487:(NTO)/
393:Length
275:LR87-9
271:LR87-7
267:LR87-5
254:LR87-3
159:
96:
89:
82:
75:
67:
4189:X-254
4184:X-248
4174:UA120
4154:Orion
4129:Algol
4114:SRB-A
4109:M-34c
4084:KM-V1
4074:RSA-3
4050:Iran
3943:FG-47
3938:FG-46
3933:FG-36
3928:FG-02
3889:XLR81
3883:RS-88
3878:Curie
3868:Gamma
3843:Other
3827:XLR81
3816:RS-88
3811:LR-91
3806:LR-87
3756:S5.92
3684:17D61
3653:Vikas
3633:Vexin
3608:YF-40
3603:YF-23
3576:, or
3556:, or
3550:UH 25
3518:XLR50
3503:RS-56
3493:RS-27
3473:LR-89
3468:LR-79
3352:RD-58
3342:NK-15
3290:TH-12
3284:TH-11
3255:Semi-
3152:TQ-12
3147:TQ-11
3127:BF-20
3092:RS-68
3087:RS-25
3064:BE-3U
3009:CE-20
2989:Vinci
2973:YF-90
2966:YF-79
2960:YF-77
2950:YF-75
2945:YF-73
2762:LR-91
2757:LR-87
2737:AJ-10
2696:Agena
2623:Lowry
2613:Beale
2596:Bases
2587:SLC-6
2582:SLC-4
2539:LC-20
2534:LC-19
2529:LC-16
2524:LC-15
2241:LR-87
1592:AJ-10
1453:2.78
1448:1.98
1433:3.03
1428:2.23
1413:1.91
1405:1.93
1402:1.91
1380:89.2
1312:Mass
1261:200s
1256:139s
1253:155s
1250:138s
1239:250s
1234:258s
1231:259s
1228:256s
1225:, SL
1189:302s
1184:296s
1181:297s
1178:290s
1117:1968
1114:1966
1111:1962
1108:1962
1105:1959
1079:Fuel
693:LRAFB
624:used
505:LR-91
455:Titan
325:Cycle
234:LR-91
223:Titan
101:JSTOR
87:books
18:LR-87
4179:SRMU
4104:M-34
4099:M-24
4094:M-14
4069:LK-1
4059:Rafe
4044:S200
4039:S139
3989:P230
3984:P120
3917:fuel
3801:AJ10
3663:LK-4
3558:UDMH
3508:S-3D
3429:RD-8
3268:RP-1
3239:M-10
3183:BE-4
3082:RL10
3071:BE-7
3030:LE-9
3024:LE-7
3019:LE-5
2984:HM7B
2905:fuel
2877:for
2873:and
2767:RL10
2680:SRMU
2572:SLTF
2567:OSTF
2450:Ares
2016:2016
1865:2017
1734:OCLC
1724:ISBN
1686:2015
1597:RL10
1408:1.9
1285:4 m
1175:, V
1138:534
1133:212
1128:140
969:NASA
963:and
861:A/B.
855:IIIE
804:IIIC
800:IIIB
628:and
541:and
530:and
497:UDMH
495:and
481:RP-1
460:and
444:LR87
442:The
258:RP-1
190:2005
186:2005
175:1959
171:1959
133:LR87
73:news
4139:GEM
4034:S12
3979:P80
3974:PAP
3969:P-6
3964:P-4
3864:UK
3648:PS4
3578:HNO
3574:MON
3554:MMH
3458:H-1
3453:F-1
3272:LOX
3114:LOX
3077:J-2
2933:LOX
2716:TOS
2706:IUS
1550:At
1533:In
1369:15
1006:.
977:M-1
973:J-2
938:.
851:34D
833:.
778:.
316:LOX
262:LOX
56:by
4226::
4029:S9
4024:S7
3572:,
3561:/
3552:,
3547:,
3270:/
3112:/
3107:CH
2931:/
2926:LH
2061:.
2032:.
2002:.
1973:.
1884:.
1873:^
1851:.
1821:.
1792:.
1763:.
1752:^
1732:.
1694:^
1672:.
1661:^
1640:.
1621:^
1541:^
1522:^
1510:^
1372:8
1364:9
1361:8
1358:8
1223:SP
1172:SP
1120:–
806:.
798:,
543:IV
483:,
314:/
308:LH
305::
287:/
281::
277:,
273:,
269:,
260:/
256::
232:D
218:LV
3891:*
3885:*
3829:*
3818:*
3583:)
3580:3
3569:4
3567:O
3565:2
3563:N
3543:(
3274:)
3266:(
3116:)
3109:4
3105:(
2935:)
2928:2
2924:(
2863:e
2856:t
2849:v
2306:e
2299:t
2292:v
2129:e
2122:t
2115:v
2076:.
2047:.
2018:.
1988:.
1959:.
1939:.
1919:.
1899:.
1867:.
1836:.
1807:.
1778:.
1746:.
1688:.
1655:.
1220:I
1169:I
1013:)
1009:(
945:)
941:(
909:)
893:)
877:)
840:)
836:(
785:)
781:(
749:)
733:)
717:.
695:)
679:)
663:)
610:)
594:)
578:)
479:/
350:)
348:f
310:2
296:4
294:O
292:2
290:N
192:)
177:)
123:)
117:(
112:)
108:(
98:·
91:·
84:·
77:·
50:.
20:)
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