Record Details

Record 1 of 1
Status on the Verification of Combustion Stability for the J-2X Engine Thrust Chamber Assembly
NTRS Full-Text: Click to View  [PDF Size: 76 KB]
Author and Affiliation:
Casiano, Matthew(NASA Marshall Space Flight Center, Huntsville, AL, United States);
Hinerman, Tim(Pratt and Whitney Rocketdyne, Canoga Park, CA, United States);
Kenny, R. Jeremy(NASA Marshall Space Flight Center, Huntsville, AL, United States);
Hulka, Jim(Jacobs Technology, Inc., Huntsville, AL, United States);
Barnett, Greg(NASA Marshall Space Flight Center, Huntsville, AL, United States);
Dodd, Fred(Pratt and Whitney Rocketdyne, Canoga Park, CA, United States);
Martin, Tom(Pratt and Whitney Rocketdyne, Canoga Park, CA, United States)
Abstract: Development is underway of the J -2X engine, a liquid oxygen/liquid hydrogen rocket engine for use on the Space Launch System. The Engine E10001 began hot fire testing in June 2011 and testing will continue with subsequent engines. The J -2X engine main combustion chamber contains both acoustic cavities and baffles. These stability aids are intended to dampen the acoustics in the main combustion chamber. Verification of the engine thrust chamber stability is determined primarily by examining experimental data using a dynamic stability rating technique; however, additional requirements were included to guard against any spontaneous instability or rough combustion. Startup and shutdown chug oscillations are also characterized for this engine. This paper details the stability requirements and verification including low and high frequency dynamics, a discussion on sensor selection and sensor port dynamics, and the process developed to assess combustion stability. A status on the stability results is also provided and discussed.
Publication Date: Apr 29, 2013
Document ID:
20130014078
(Acquired Jul 26, 2013)
Subject Category: SPACECRAFT PROPULSION AND POWER
Report/Patent Number: M12-2211
Document Type: Conference Paper
Meeting Information: 60th JANNAF Propulsion Meeting/7th Liquid Propulsion(LPS); 29 Apr. - 03 May 2013; Colorado Springs, CO; United States
Financial Sponsor: NASA Marshall Space Flight Center; Huntsville, AL, United States
Organization Source: NASA Marshall Space Flight Center; Huntsville, AL, United States
Description: 1p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: HYDROGEN OXYGEN ENGINES; THRUST CHAMBERS; LIQUID OXYGEN; SPACECRAFT LAUNCHING; COMBUSTION CHAMBERS; ROCKET ENGINES; ACOUSTICS; DYNAMIC STABILITY; OSCILLATIONS
Availability Notes: Abstract Only
› Back to Top
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed
Find Similar Records
 
NASA Logo, External Link

NASA Official: Gerald Steeman
Sponsored By: NASA Scientific and Technical Information Program
Site Curator: STI Support Services
Last Modified: July 26, 2013

Privacy Policy & Important Notices Disclaimers, Copyright, Terms of Use Freedom of Information Act USA.gov NASA.gov NASA OCIO Free Adobe PDF Reader Free MS Word Viewer