LOX/Hydrocarbon auxiliary propulsion for the Space Shuttle Orbiter

Orton, G. F.; Mark, T. D.; Lausten, M. F.

doi:10.2514/6.1981-1572

Cited by 1 publication

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“…In the 1980's, various combustion studies considered the trade-offs between ethanol (C2H5OH), propane (C3H8), CH4, and kerosene (RP-1) for non-toxic auxiliary propulsion and booster applications. Numerous hydrocarbon combustion tests 3,4,5,6,7 and vehicle propulsion system trade studies 8 identified C2H5OH and CH4 as good candidates. C3H8 and RP-1 were found to have limited cooling effectiveness due to carbonaceous coking and severe sooting problems.…”

Section: Introduction and Background On O2/ch4 Propellant Selectionmentioning

confidence: 98%

Development and Flight Operation of a 5 lbf to 20 lbf O2/CH4 Roll Control Engine for Project Morpheus

McManamen¹,

Hurlbert²,

Kroeger³

2014

50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference

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The development and flight operation of a 22 N to 89 N (5 lbf to 20 lbf) O2/CH4 rocket engine is discussed herein. The Roll Control Engine (RCE) was designed by NASA JSC for the Project Morpheus flying vertical test bed and is fully integrated with the Morpheus main engine. Morpheus is a NASA Advanced Exploration System (AES) Project lead out of JSC. Several iterations of the RCE design have resolved some technical problems which are described in the present work. Over 20 flight tests have demonstrated that the Roll Control System (RCS) engines are reliable, capable of operation over a wide range of pressures (2400 kPa to 1000 kPa or 350 psig to 150 psig) and propellant temperatures (gas to liquid), and meet the control requirements for the vehicle. Information regarding ground turnaround and flight operational experience in the earth atmospheric environment is presented. The purpose of this work is to disseminate the knowledge that Project Morpheus has gained through research and development of this engine.Nomenclature Soff = FDIR fail off strike Ft = thrust force Isp = specific impulse Pc = chamber pressure Pin = engine inlet pressure Ptank = propellant tank pressure Q = volumetric flow rate Tin = engine inlet fluid temperature Tnoz = nozzle outer skin temperature Tsat = saturation temperature Ttank = propellant tank fluid temperature Vb = RCS bleed valve open command Vm = RCE main valve open command Acronyms CFM = cryogenic fluid management CG = center of gravity CNTRL = Morpheus control software EMI = electromagnetic interference FDIR = fault detection, isolation, and reconfiguration FFC = fuel film cooling ISRU = in-situ resource utilization MIB = minimum impulse bit MR = mass mixture ratio PCAD = propulsion and cryogenics advanced development PROP = Morpheus propulsion software RCE = roll control engine RCS = roll control system 1 Morpheus RCS Lead, Propulsion Branch, EP4, and AIAA Member.

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Section: Introduction and Background On O2/ch4 Propellant Selectionmentioning

confidence: 98%