Water Electrolysis Satellite Propulsion System
Final rept. Jul 1971-Oct 1972
MARQUARDT CO VAN NUYS CA
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A water electrolysis satellite propulsion system capable of providing 100,000 pound-seconds of impulse during a seven year life was fabricated and tested in three modes of operation -- simple blowdown, helium repressurization and repressurization by oxygen in a feedback mode. The tests verified the systems predicted capabilities in all three modes at generation rates of 0 to 2. 3 lbsday of propellant, with an electrical energy conversion efficiency of up to 82. 5.0 pound thrust and a 0.1 pound thrust GO2GH2 engine were tested as separate components with measured specific impulses of 345 and 330 seconds, respectively, at a mixture ratio of 8. The 0.1 pound engine accumulated 14,330 seconds of burn time and 151,263 ignitions, while the 5 pound thrust engine attained 10,031 seconds of burn time and 69,700 ignitions. The demonstrated overall performance of the system and engines shows its applicability to satellite and spacecraft which require high performance, reliable operation, and long life capabilities.
- Rocket Engines