Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-25T06:00:42.249Z Has data issue: false hasContentIssue false
  • English
  • Français

Optimal load limiting parachute inflation control

Published online by Cambridge University Press:  04 July 2016

J. Redmond ,
G. G. Parker  and
T. D. Hinnerichs
J. Redmond
Affiliation:
Sandia National LaboratoriesAlbuquerque, USA
G. G. Parker
Affiliation:
Sandia National LaboratoriesAlbuquerque, USA
T. D. Hinnerichs
Affiliation:
Sandia National LaboratoriesAlbuquerque, USA
Get access Rights & Permissions [Opens in a new window]

Abstract

Excessive deceleration forces experienced during high speed deployment of parachute systems can cause damage to the payload and the canopy fabric. Conventional reefing lines offer limited relief by temporarily restricting canopy inflation and limiting the peak deceleration load. However, the open-loop control provided by existing reefing devices restricts their use to a specific set of deployment conditions. The sensing, processing, and actuation which are characteristic of adaptive structures form the basis of three concepts for active control of parachute inflation. These active control concepts are incorporated into a computer simulation of parachute inflation. Initial investigations indicate that these concepts promise enhanced performance as compared to conventional techniques for a nominal release. Furthermore, the ability of each controller to adapt to off-nominal release conditions is examined.

Type
Research Article
Information
The Aeronautical Journal , Volume 99 , Issue 987 , September 1995 , pp. 306 - 312
Copyright
Copyright © Royal Aeronautical Society 1995 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Laeferty, J.F. and Lange, K.O. The University of Kentucky continuous disreefing device, Wright Air Development Center Technical Note 58-177, May 1959.Google Scholar
2. Webb, D.B. Development and initial test results of parachutes with automatic inflation modulation, Proceedings of the AIAA 6th Aero dynamic Decelerator and Balloon Technology Conference, March 1979, pp 363-374.Google Scholar
3. Webb, D.B. Further test results of parachutes with automatic inflation modulation, Proceedings of the SAFE 18th Annual Symposium of the Survival and Flight Equipment Association, October 1981, pp 116-123.Google Scholar
4. Webb, D.B. Automatic inflation modulation parachute up-date, Survival and Flight Equipment J, 1986, 16, (2), pp 38–45.Google Scholar
5. Hennings, L.J. Rapid — The design of a low-altitude parachute, Proceedings of the AIAA 11th Aerodynamic Decelerator Systems Technology Conference, April 1991, pp 408-420.Google Scholar
6. Lee, C.K. Radial reefing method for accelerated and controlled parachute opening, Proceedings of the AIAA 12th Aerodynamic Decelerator Systems Technology Conference, May 1993, pp 62-71.Google Scholar
7. Macha, J.M. A simple approximate model of parachute inflation, Proceedings of the AIAA 12th Aerodynamic Decelerator Systems Technology Conference, May 1993, pp 44-53.Google Scholar
8. Macha, J.M. Development and experimental verification of a single-degree-of-freedom inflation model for ribbon and ringslot parachutes, Sandia National Laboratories Report SAND92-1378, Albuquerque, NM, October 1992.Google Scholar
9. Hopper, M.J. Harwell Subroutine Library, AERE-R9185, UKAEA, Harwell, Oxon, UK.Google Scholar