NASA NTRS · 19700032496
Discrete local altitude sensing device Patent
Abstract
Device for use in descending spacecraft as altitude sensor for actuating deceleration retrorockets
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Campbell, C. C., Jr., Chandler, J. A., Grubbs, T. M.. 1967-02-07. Discrete local altitude sensing device Patent. https://ntrs.nasa.gov/citations/19700032496
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