Knowledge (XXG)

TR-201

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In order to keep the maximum operating temperatures of the titanium case in the vicinity of 800 °F (427 °C), the ablative liner was designed as a composite material providing the maximum heat sink and minimum weight. The selected configuration consisted of a high density, erosion-resistant
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ablative liner is retained in the exit cone during transportation, launch and boost. During engine firing, thrust loads force the exit cone liner against the case. The titanium head end assembly which contains the Pintle Injector and propellant valve subcomponents is attached with 36 A-286 steel
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alloy titanium case was accomplished by machining the chamber portion and the exit cone portion from forgings and welding them into one unit at the throat centerline. The ablative liner is fabricated in two segments and installed from either end. The shape of the nozzle extension is such that the
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The installed pintle injector, unique to TRW-designed liquid-propulsion systems, provides improved reliability and less costly method of fuel–oxidizer impingement in the thrust chamber than conventional coaxial distributed-element injectors typically used on liquid bipropellant rocket engines.
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and was subsequently adopted for the Delta expendable launch vehicle 2nd stage. The engine made 10 flights during the Apollo program and 77 during its Delta career between 1974 and 1988. The TRW TR-201 was re-configured as a fixed-thrust version of the LMDE for Delta's stage 2. Multi-start
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operation is adjustable up to 55.6 kN and propellant throughput up to 7,711 kg; and the engine can be adapted to optional expansion ratio nozzles. Development of the innovative thrust chamber and pintle design is credited to TRW Aerospace Engineer Gerard W. Elverum Jr.
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first invented by Gerard W. Elverum Jr. and developed by TRW in the late 1950s and received US Patent in 1972. This injector technology and design is also used on SpaceX
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launches between 1972 and 1988. The engine had a 100% reliability record during this 15 year operational period.
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silica cloth/phenolic material surrounded by a lightweight needle-felted silica mat/phenolic insulation.
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Length: 51 inches – gimbal attachment to nozzle tip (minus nozzle extension)
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Expansion ratio: 16:1 without nozzle extension; 43:1 with nozzle extension
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Maximum diameter: 34 inches (860 mm) (minus nozzle extension)
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REMEMBERING THE GIANTS - Apollo Rocket Propulsion Development
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TRW Pintle Engine Heritage and Performance Characteristics
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Cooling, lower thrust chamber: ablative quartz phenolic;
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The TR-201 engine was used as the second stage for 77
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The combustion chamber consists of an ablative-lined
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as oxidizer. It was developed in the early 1970s by
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Dry mass: 300 pounds (140 kg) with columbium (
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Archived from 341:Number flown: 77 (Delta 2000 configuration) 2523:Rocket engines using hypergolic propellant 2246: 2232: 2224: 1540: 1264: 922: 913: 866: 852: 844: 729:High Energy Astronomy Observatory Program 654: 640: 632: 361:Mounting: gimbal attachment above injector 96: 92: 450: 239:used to propel the upper stage of the 18: 7: 897:Comparison of orbital rocket engines 738:High Energy Astronomy Observatory 2 407:Cooling, nozzle extension: radiative 2533:Rocket engines of the United States 743:High Energy Astronomy Observatory 3 733:High Energy Astronomy Observatory 1 534:from the original on 31 March 2022. 417:Ignition: hypergolic, started by 28 401:Cooling, upper thrust chamber: film 284:lunar module descent engine (LMDE) 14: 197:1.38 m (4 ft 6 in) 189:2.27 m (7 ft 5 in) 2428: 1908: 388:Thrust, vacuum: 42.923 kN 1: 2254:Spacecraft engines and motors 1693:RD-0202 to 0206, 0208 to 0213 723:Functional flow block diagram 713:Compton Gamma Ray Observatory 391:Specific impulse, vacuum: 303 176:301 s (2.95 km/s) 165:700 kPa (100 psi) 140:41.9 kN (9,400 lb 2549: 324:inch (6.4 mm) bolts. 2426: 2203: 1906: 892: 823:The Aerospace Corporation 781:TRW Low Maintenance Rifle 718:Descent propulsion system 708:Chandra X-ray Observatory 385:Oxidizer:fuel ratio: 1.60 247:, from 1972 to 1988. The 214: 205:113 kg (249 lb) 2438:Solid propellant motors 1738:RD-250 to 252, 261, 262 499:. NASA. pp. 73–86. 282:as a derivative of the 286:. This engine used a 150:Thrust-to-weight ratio 2482:Spacecraft propulsion 2214:are under development 1602:YF-20, 21, 22, 24, 25 1381:RD-107, 108, 117, 118 410:Chamber pressure: 7.1 220:Delta (rocket family) 2502:Liquid apogee engine 828:Goodrich Corporation 1703:RD-0216, 0217, 0235 1366:RD-0107, 0108, 0110 591:US Patent 3,205,656 572:US Patent 3,699,772 525:10.2514/6.2000-3871 478:US Patent 3,699,772 459:US Patent 3,205,656 379:) at 8.92 kg/s 299:Apollo Lunar Module 113:Pressure-fed engine 21: 527:. AIAA 2000-3871. 218:, second stage of 80:Liquid-fuel engine 2510: 2509: 2497:Apogee kick motor 2221: 2220: 2163:Space Shuttle SRB 1904: 1903: 1842: 1841: 1532: 1531: 1254: 1253: 841: 840: 243:, referred to as 225: 224: 25:Country of origin 2540: 2475:Related articles 2432: 2431: 2248: 2241: 2234: 2225: 1912: 1911: 1748:RD-263, 268, 273 1679:along other LREs 1541: 1401:RD-191, 151, 181 1265: 923: 914: 868: 861: 854: 845: 833:Northrop Grumman 811:Related articles 677:Lucas Industries 656: 649: 642: 633: 626: 625: 623: 621: 606: 600: 599: 598: 594: 587: 581: 580: 579: 575: 568: 562: 561: 559: 557: 542: 536: 535: 533: 518: 507: 501: 500: 493: 487: 486: 485: 481: 474: 468: 467: 466: 462: 455: 427: 420: 413: 394: 350:nozzle extension 323: 322: 318: 276: 275: 274: 266: 265: 171:Specific impulse 100: 22: 2548: 2547: 2543: 2542: 2541: 2539: 2538: 2537: 2513: 2512: 2511: 2506: 2470: 2433: 2429: 2424: 2255: 2252: 2222: 2217: 2199: 1920: 1913: 1909: 1900: 1838: 1728:RD-0255 to 0257 1723:RD-0243 to 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775: 768: 761: 754: 670:Subsidiaries 618:. Retrieved 614:the original 604: 585: 566: 554:. Retrieved 550:the original 540: 512: 505: 496: 491: 472: 453: 436: 330: 326: 304: 296: 241:Delta rocket 228: 226: 43:Manufacturer 2261:Liquid fuel 2210:Engines in 1857:RD-109, 119 1795:RD-864, 869 1780:RD-854, 861 1743:RD-253, 275 1391:RD-170, 171 682:LucasVarity 433:Delta usage 377:Aerozine 50 253:Aerozine 50 132:Performance 103:Aerozine 50 61:Predecessor 56:Upper stage 53:Application 2517:Categories 2487:Spacecraft 2410:SuperDraco 1597:YF-1, 2, 3 1545:Hypergolic 1517:Rutherford 1236:Prometheus 1198:Archimedes 797:Simon Ramo 770:Pioneer 11 763:Pioneer 10 445:References 233:hypergolic 181:Dimensions 86:Propellant 2492:Satellite 2467:SpaB-140C 2138:Castor 30 2018:Zefiro 40 2013:Zefiro 23 1954:SpaB-140C 1351:NK-33, 44 1261:cryogenic 1107:Methalox 926:Hydrolox 918:Cryogenic 818:Astrolink 756:Pioneer 1 692:TRW Vidar 610:"Delta P" 352:installed 294:engines. 38:1972–1988 2355:KTDU-425 2153:Orbus-21 2008:Zefiro 9 1771:Ukraine 1549:Aerozine 1537:Storable 1429:Ukraine 1371:RD-0110R 1268:Kerolox 750:N2 chart 701:Products 663:TRW Inc. 546:"TR-201" 529:Archived 202:Dry mass 194:Diameter 173:, vacuum 161:pressure 159:Chamber 2464:SpaB-65 2450:Star 48 2445:Star 37 2327:KTDU-80 2308:KTDU-35 2295:KDU-414 2263:engines 2212:italics 2173:Star 48 2168:Star 37 2148:Orbus-6 2069:Israel 2003:Waxwing 1959:Europe 1951:SpaB-65 1853:Russia 1718:RD-0237 1713:RD-0236 1684:Russia 1663:Israel 1623:Europe 1467:Kestrel 1413:S1.5400 1376:RD-0124 1342:Russia 1335:SCE-200 1231:Europe 1224:RD-0169 1219:Russia 1145:Longyun 1138:Lingyun 1056:RD-0146 1050:RD-0120 1041:Russia 998:Vulcain 984:Europe 907:Liquid 883:orbital 375:/UDMH ( 346:niobium 319:⁄ 311:Ti6Al4V 245:Delta-P 216:Delta-P 210:Used in 124:Chamber 74:Retired 2415:TR-201 2348:S5.142 2335:11D428 2331:11D426 2302:S5.114 2128:AJ-60A 2093:KM-V2b 2084:Japan 2058:Salman 2024:India 1998:Topaze 1963:Mage 1 1928:China 1919:Solid 1826:TR-201 1790:RD-856 1785:RD-855 1775:RD-843 1765:S5.98M 1754:RD-270 1648:India 1642:Viking 1632:Astris 1627:Aestus 1617:YF-50D 1593:China 1502:RS-27A 1492:Merlin 1482:LR-105 1446:RD-810 1439:RD-801 1423:TEPREL 1419:Spain 1407:RD-193 1396:RD-180 1386:RD-120 1330:India 1323:Welkin 1316:YF-130 1310:YF-115 1305:YF-102 1300:YF-100 1284:China 1212:Aeon R 1205:Aeon 1 1192:Raptor 1176:YF-215 1169:YF-209 1162:TQ-15A 1126:China 1019:Japan 1008:CE-7.5 1004:India 959:YF-75D 945:China 790:People 776:TR-201 620:4 June 597:  578:  556:4 June 484:  465:  426:  419:  412:  393:  292:Merlin 186:Length 71:Status 20:TR-201 2460:FG-36 2455:FG-15 2420:XLR81 2405:S5.92 2390:RS-25 2384:11D58 2380:RD-58 2360:LEROS 2343:S5.80 2339:S5.79 2321:S5-66 2318:S5-60 2315:S5.53 2312:S5-35 2299:S5.19 2290:Draco 2285:Curie 2270:17D61 2193:X-254 2188:X-248 2178:UA120 2158:Orion 2133:Algol 2118:SRB-A 2113:M-34c 2088:KM-V1 2078:RSA-3 2054:Iran 1947:FG-47 1942:FG-46 1937:FG-36 1932:FG-02 1893:XLR81 1887:RS-88 1882:Curie 1872:Gamma 1847:Other 1831:XLR81 1820:RS-88 1815:LR-91 1810:LR-87 1760:S5.92 1688:17D61 1657:Vikas 1637:Vexin 1612:YF-40 1607:YF-23 1580:, or 1560:, or 1554:UH 25 1522:XLR50 1507:RS-56 1497:RS-27 1477:LR-89 1472:LR-79 1356:RD-58 1346:NK-15 1294:TH-12 1288:TH-11 1259:Semi- 1156:TQ-12 1151:TQ-11 1131:BF-20 1096:RS-68 1091:RS-25 1068:BE-3U 1013:CE-20 993:Vinci 977:YF-90 970:YF-79 964:YF-77 954:YF-75 949:YF-73 532:(PDF) 517:(PDF) 439:Delta 251:uses 231:is a 109:Cycle 2400:S5.4 2395:S400 2375:R-4D 2370:LMDE 2365:LMAE 2280:BT-4 2275:AJ10 2183:SRMU 2108:M-34 2103:M-24 2098:M-14 2073:LK-1 2063:Rafe 2048:S200 2043:S139 1993:P230 1988:P120 1921:fuel 1805:AJ10 1667:LK-4 1562:UDMH 1512:S-3D 1433:RD-8 1272:RP-1 1243:M-10 1187:BE-4 1086:RL10 1075:BE-7 1034:LE-9 1028:LE-7 1023:LE-5 988:HM7B 909:fuel 881:for 877:and 622:2012 558:2012 227:The 154:31.4 65:LMDE 35:Date 2143:GEM 2038:S12 1983:P80 1978:PAP 1973:P-6 1968:P-4 1868:UK 1652:PS4 1582:HNO 1578:MON 1558:MMH 1462:H-1 1457:F-1 1276:LOX 1118:LOX 1081:J-2 937:LOX 521:doi 414:atm 280:TRW 47:TRW 2519:: 2033:S9 2028:S7 1576:, 1565:/ 1556:, 1551:, 1274:/ 1116:/ 1111:CH 935:/ 930:LH 348:) 101:/ 2247:e 2240:t 2233:v 1895:* 1889:* 1833:* 1822:* 1587:) 1584:3 1573:4 1571:O 1569:2 1567:N 1547:( 1278:) 1270:( 1120:) 1113:4 1109:( 939:) 932:2 928:( 867:e 860:t 853:v 655:e 648:t 641:v 624:. 560:. 523:: 395:s 373:4 371:O 369:2 321:4 317:1 272:4 267:O 263:2 258:N 144:) 142:f 127:1 97:4 95:O 93:2 91:N

Index

United States
TRW
LMDE
Liquid-fuel engine
N2O4
Aerozine 50
Pressure-fed engine
Thrust-to-weight ratio
pressure
Specific impulse
Delta-P
Delta (rocket family)
hypergolic
rocket engine
Delta rocket
Delta-P
rocket engine
Aerozine 50
N
2
O
4

TRW
lunar module descent engine (LMDE)
pintle injector
Merlin
Apollo Lunar Module
titanium alloy
Ti6Al4V
niobium
nozzle extension
Aerozine 50
Delta

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