Real-time radiography of Titan 4 Solid Rocket Motor Upgrade (SRMU) static firing test QM-2

Details Real-time radiography of Titan 4 Solid Rocket Motor Upgrade (SRMU) static firing test QM-2 Real-time radiography of Titan 4 Solid Rocket Motor Upgrade (SRMU) static firing test QM-2

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994stin...9510193d&link_type=abstract

Unknown

Physics

Booster Rocket Engines, Combustion Products, Radiography, Rocket Firing, Slags, Solid Propellant Rocket Engines, Static Firing, Titan 4 Launch Vehicle, Burning Time, Data Acquisition, Video Data, X Ray Imagery

Scientific paper

Real-time radiography was successfully applied to the Titan-4 Solid Rocket Motor Upgrade (SRMU) static firing test QM-2 conducted February 22, 1993 at Phillips Laboratory, Edwards AFB, CA. The real-time video data obtained in this test gave the first incontrovertible evidence that the molten slag pool is low (less than 5 to 6 inches in depth referenced to the bottom of the aft dome cavity) before T + 55 seconds, builds fairly linearly from this point in time reaching a quasi-equilibrium depth of 16 to 17 inches at about T + 97 seconds, which is well below the top of the vectored nozzle, and maintains that level until T + 125 near the end motor burn. From T + 125 seconds to motor burn-out at T + 140 seconds the slag pool builds to a maximum depth of about 20 to 21 inches, still well below the top of the nozzle. The molten slag pool was observed to interact with motions of the vectored nozzle, and exhibit slosh and wave mode oscillations. A few slag ejection events were also observed.

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