Preliminary Study into the Constant Drag Parachute for Aircrew Escape Systems

摘要

Parachute geometries for use in high velocity, low altitude ejections, to maximize the survivability of such situations by creating a system which maintains a high level of deceleration were studied in a low speed wind tunnel, the forces in the streamwise direction during and after initial inflation being recorded for each test. The limitations of such testing were also noted. Variable geometry parachutes, possibly of the reefed type, are shown to have potential to be highly efficient at maintaining drag levels. The ideal system would employ a parachute of this type, coupled with an energy absorbing mechanism, parachute expansion being controlled via a force sensor built into the seat.