Abstract A radar chaff ejector having a truncated segment shaped case containing in the bottom a gas-generating pyrotechnic covered by a gas cap. A flexible membrane fits into the case, covering the walls and the gas cap, and is secured to the rim of the case. Radar chaff is packed into the case and an arcuate cover is fitted thereon. When the device functions, the pyrotechnic ignites to generate gas pressure under the gas cap which accelerates the gas cap outward against the membrane to pop off the cover and effect an initial acceleration of the chaff. As the cap moves outward the gas pressure escapes around its edges but is contained by the flexible membrane which is pushed further outward thereby. The membrane will continue to expand outward under the influence of the gas pressure until it has ballooned out from the rim of the case, by which time all the radar chaff will be expelled.
An ejector for radar chaff and the like comprising: a concave case for holding radar chaff; a flexible evertible membrane lining the concave portion of said case and secured to the rim thereof, said chaff being placed within the concavity formed by said membrane; a gas generator positioned between said membrane and said case; and means for activating said gas generator, the generated gas acting to push against said membrane to evert it, thereby expelling the chaff.
Claim 2
Dependent Claim
77 words
An ejector for radar chaff and the like comprising: a concave case for holding radar chaff; a flexible evertible membrane lining the concave portion of said case and secured to the rim thereof, said chaff being placed within the concavity formed by said membrane; a gas generator positioned between said membrane and said case; and means for activating said gas generator, the generated gas acting to push against said membrane to evert it, thereby expelling the chaff.
Claim 3
Dependent Claim
38 words
The radar chaff ejector defined in claim 1, wherein: said gas generator is a pyrotechnic composition; and further comprising a cap positioned between said gas generator and said membrane to protect said membrane from damage by said pyrotechnic.
Claim 4
Dependent Claim
46 words
The radar chaff ejector defined in claim 2, wherein: said case is an open ended rigid case having a closed base; means defined in said base forming therethrough an aperture; said activating means comprises a time fuse communicating with said aperture and with said gas generator.