Abstract: In an air-delivered, ice-penetrating, acoustic communications package, me are provided to ensure that subsurface electronic components are safely deployed under the ice layer. The package comprises a shaped penetrator probe and a separable, interconnected sonobuoy system having a buoyant, signal transmitting section, a buoyant, signal converting section and subsurface signal detecting components. The subsurface components are housed within a canister extractable from the aft end of the probe and connected to the afterbody by a heavy-duty shock cord coupled with a lighter connecting cord. After ice penetration, the antenna section, afterbody and probe separate, with the antenna section and after-body remaining above the ice/water interface. The probe descends, paying out the shock cord to extract the component canister. The canister separates and the components are deployed full depth via the connecting cable.

Abstract: A system for generating electrical power comprising a stator in combination ith an air driven turbine type rotor of annular shape and supported for rotation on an outer surface of the unit to which power is to be supplied. Aerodynamically responsive fins on the annulus ring when exposed to the air flow, rotate the annulus. Magnets in the annulus are separated from stationary stator coils embedded in the unit to generate alternating current.