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| Title | A technique for the calculation of the opening-shock forces for several types of solid cloth parachutes |
| Alternative Title | Opening-shock forces for several types of solid cloth parachutes |
| Series | Technical report (Naval Ordnance Laboratory (White Oak, Md.)) 72-146. |
| Creator | Ludtke, William P.
Naval Ordnance Laboratory (White Oak, Md.)
|
| Subject | Parachutes -- Deployment -- Mathematical models.
Shock (Mechanics) -- Mathematical models.
Wind tunnels
|
| Description | In 1965 the Naval Ordnance Laboratory was engaged in a project which required the deployment of a 35-foot-diameter extended-skirt parachute (type T-10) as the second stage of a retardation system at an altitude of 100,000 feet. At that time, there were no available data on the T-10 parachute deployed under similar circumstances. This new parachute opening-shock calaulation technique was generated as a solution to this dilemma. A drag area ratio-time ratio signature derived from infinite mass wind-tunnel parachute deployments is combined with Newton's second law of motion to develop instantaneous velocity ratios and shock factors during the deployment process. Methods of computing the reference time (t0) and the inflation time (t[subscript]f) are presented. New concepts of the parachute canopy volume, canopy cloth permeability, parachute initial size at line stretch, and material elasticity are included. |
| Publisher | White Oak, Silver Spring, Md. : Naval Ordnance Laboratory, 1972. |
| Local Notes | Donated by Sandia National Laboratories, November 2005. |
| Notes | This work is part of the library's ""Parachute History Collection"", donated by the Sandia National Laboratories. ""NOLTR 72-146""--T.p. ""AD 749690""--T.p. ""20 June 1972""--T.p. Photocopy. Spingfield, Va. : National Technical Information Service, 1972. 21 cm. |
| DateOriginal | 1972 |
| Format | Portable Document Format |
| Extent | 78 p. |
| Call Number | TL752 .L82 1972 |
| Original Record Link | http://leonardo.lindahall.org/ipac20/ipac.jsp?profile=lhlopen&full=3100001~!550800~!3 |
| Language | English |
| Relation | A technique for the calculation of the opening-shock forces for several types of solid cloth parachutes |
| Collection | Parachute History Collection |
| Rights | http://www.lindahall.org/collections/hos_imageuse.shtml |
