Aeronautics and astronautics – Safety lowering devices
Patent
1976-11-17
1980-06-24
Kelmachter, Barry L.
Aeronautics and astronautics
Safety lowering devices
9 8R, 102 4, 102356, 244147, 244151B, 294 83A, 367 4, B64D 1900
Patent
active
042091519
ABSTRACT:
A banner in the form of an elongated sheet of flexible material is attached to an air dropped sonobuoy for stabilization of the sonobuoy during descent as well as for descent speed control, entry angle control, and wave action damping once the sonobuoy is floating at the surface of the ocean. The banner is roller furled and stored on top of the sonobuoy. When the sonobuoy is dropped, the banner unrolls and streams out behind the sonobuoy during descent. It is a feature of this drogue apparatus that it is deployed by the time that the sonobuoy has descended a distance corresponding approximately to the length of the banner. The banner is not released when the sonobuoy hits the water in order to enable it to stream out over the surface of the water to provide wave damping action.
REFERENCES:
patent: 2342384 (1944-02-01), Volf
patent: 2370150 (1945-02-01), Dircksen
patent: 2501559 (1950-03-01), Winzen et al.
patent: 2778308 (1957-01-01), Fogal et al.
patent: 3374973 (1968-03-01), Lokerson
patent: 3386692 (1968-06-01), Schuerch
patent: 3913483 (1975-10-01), Wolterman
Etlinger Louis
Kelmachter Barry L.
Sanders Associates Inc.
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