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Space Shuttle Solid Rocket booster nozzle flexible seal pivot point dynamicsThe NASA Space Shuttle Solid Rocket Motor (SRM) uses an omniaxial flexible seal for vectoring the nozzle. This flexible seal, being built under the technical management of Marshall Space Flight Center in Huntsville, Alabama, is the first ever to be used on a manned spacecraft booster. Since no test history on the particular type of flexible seal being used was available and since flexible seal dynamics characteristics affect many vehicle hardware design and manufacture requirements, a rigorous test program to assess the integrity and operating characteristics of the seal was developed and executed. Vector requirements of the SRM flexible seal and results of subscale and full-scale prototype seal verification tests are included. The advantages of an improved method of calculating actuator stroke versus vector angle and pressure over the more classical method of calculating actuator strokes using pivot point envelopes are discussed. Results presented show that the SRM seal design will satisfy flight requirements.
Document ID
19770055771
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Gaffin, R. D.
(NASA Marshall Space Flight Center Huntsville, Ala., United States)
Date Acquired
August 9, 2013
Publication Date
July 1, 1977
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
AIAA PAPER 77-986
Meeting Information
Meeting: Propulsion Conference
Location: Orlando, FL
Country: US
Start Date: July 11, 1977
End Date: July 13, 1977
Sponsors: Society of Automotive Engineers, American Institute of Aeronautics and Astronautics
Accession Number
77A38623
Distribution Limits
Public
Copyright
Other

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