INVESTIGATION OF VARIOUS TEXTILE PARACHUTES AND CONTROL SYSTEMS TO ACHIEVE STEERABILITY. PHASE I
Rept. for Jun 1963-Mar 1964
NORTHROP CORP NEWBURY PARK CA VENTURA DIV
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This research program covers the detailed investigation of gliding parachutes and their necessary guidance and control systems to achieve a controlled approach to a touchdown at a preselected site. Theoretical and analytical investigations have been conducted to determine system feasibility and performance limits and to establish the configuration of a flexible, self- inflating canopy capable of meeting the program objectives. A series of exploratory wind tunnel tests with small model steerable parachutes has been conducted to substantiate the findings of the analytical investigation and further define the detail design of the most promising configurations. Additional tests with large scale models in the form of tow tests, wind tunnel tests, and free-flight deployment tests, have been conducted to demonstrate aerodynamic characteristics and to obtain essential data for use as design criteria for an integrated steerable parachute system. The results of this research program, reported herein, has culminated in the design of a flexible, self-inflating, steerable parachute canopy which has demonstrated in wind tunnel tests a maximum lift-to-drag ratio of 21 has been deployed in free-flight tests at velocities up to 150 knots and has demonstrated a turn rate of approximately thirty 30 degrees-per-second.
- Gliders and Parachutes