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Record Details

Record 35 of 3329
Multiple dopant injection system for small rocket engines
Author and Affiliation:
Sakala, G. G.(NASA John C. Stennis Space Center, Bay Saint Louis, MS, United States)
Raines, N. G.(Sverdrup Technology, Inc., NASA, Stennis Space Center)
Abstract: The Diagnostics Test Facility (DTF) at NASA's Stennis Space Center (SSC) was designed and built to provide a standard rocket engine exhaust plume for use in the research and development of engine health monitoring instrumentation. A 1000 lb thrust class liquid oxygen (LOX)-gaseous hydrogen (GH2) fueled rocket engine is used as the subscale plume source to simulate the SSME during experimentation and instrument development. The ability of the DTF to provide efficient, and low cost test operations makes it uniquely suited for plume diagnostic experimentation. The most unique feature of the DTF is the Multiple Dopant Injection System (MDIS) that is used to seed the exhaust plume with the desired element or metal alloy. The dopant injection takes place at the fuel injector, yielding a very uniform and homogeneous distribution of the seeding material in the exhaust plume. The MDIS allows during a single test firing of the DTF, the seeding of the exhaust plume with up to three different dopants and also provides distilled water base lines between the dopants. A number of plume diagnostic-related experiments have already utilized the unique capabilities of the DTF.
Publication Date: Jul 01, 1992
Document ID:
19920066305
(Acquired Nov 22, 1995)
Accession Number: 92A48929
Subject Category: SPACECRAFT PROPULSION AND POWER
Report/Patent Number: AIAA PAPER 92-3352
Document Type: Preprint
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: NASA Stennis Space Center; Stennis Space Center, MS, United States
Description: 8p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: EXHAUST EMISSION; FUEL INJECTION; HYDROGEN OXYGEN ENGINES; SPACE SHUTTLE MAIN ENGINE; TEST FACILITIES; ENGINE MONITORING INSTRUMENTS; LIQUID CHROMATOGRAPHY; PEEK; PLUMES; ROCKET ENGINES; SYSTEMS HEALTH MONITORING
Imprint And Other Notes: AIAA, SAE, ASME, and ASEE, Joint Propulsion Conference and Exhibit, 28th, Nashville, TN, July 6-8, 1992. 8 p.
Availability Source: Other Sources
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