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Measurements of Individual Parachute Loads in a Clustered Parachute System

机译：集群降落伞系统中单个降落伞载荷的测量

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When developing any parachute system, it is necessary to know the loads produced by the parachute throughout the deployment process. A major concern with a clustered parachute system is the nonconcurrent inflation of the individual parachutes. If this nonconcurrent inflation produces sufficiently large asymmetric loads, the design loads may be exceeded. In the past, load data have frequently been inferred from acceleration data of the parachute test vehicle. However, due to vehicle angle of attack and attitude relative to the longitudinal axis of the parachute, this method can give erroneous results. Thus, in the development of parachute systems, it is desirable to have an instrumentation system which can directly measure the load produced by each parachute. Due to the environment, this system must be very rugged and have minimal space requirements. Such a system has been designed and incorporated into a test program at Sandia National Laboratories. The system is described and representative test results are given to demonstrate the usefulness of such a system in a development program. 3 refs., 6 figs. (ERA citation 14:022782)

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