Apparatus for simultaneously disreefing a centrally reefed clustered parachute system
Abstract
A single multi-line cutter is connected to each of a cluster of parachutes by a separate short tether line that holds the parachutes, initially reefed by closed loop reefing lines, close to one another. The closed loop reefing lines and tether lines, one from each parachute, are disposed within the cutter to be simultaneously cut by its actuation when a central line attached between the payload and the cutter is stretched upon deployment of the cluster. A pyrotechnic or electronic time delay may be included in the cutter to delay the actual simultaneous cutting of all lines until the clustered parachutes attain a measure of stability prior to being disreefed. A second set of reefing lines and second tether lines may be provided for each parachute, to enable a two-stage, separately timed, step-by-step disreefing.
- Inventors:
-
- Albuquerque, NM
- Issue Date:
- Research Org.:
- AT&T
- OSTI Identifier:
- 866627
- Patent Number(s):
- 4752050
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B64 - AIRCRAFT B64D - EQUIPMENT FOR FITTING IN OR TO AIRCRAFT
- DOE Contract Number:
- AC04-76DP00789
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- apparatus; simultaneously; disreefing; centrally; reefed; clustered; parachute; single; multi-line; cutter; connected; cluster; parachutes; separate; tether; line; holds; initially; closed; loop; reefing; lines; close; disposed; cut; actuation; central; attached; payload; stretched; deployment; pyrotechnic; electronic; time; delay; included; simultaneous; cutting; attain; measure; stability; prior; disreefed; set; provided; enable; two-stage; separately; timed; step-by-step; closed loop; time delay; simultaneously cut; /244/
Citation Formats
Johnson, Donald W. Apparatus for simultaneously disreefing a centrally reefed clustered parachute system. United States: N. p., 1988.
Web.
Johnson, Donald W. Apparatus for simultaneously disreefing a centrally reefed clustered parachute system. United States.
Johnson, Donald W. Fri .
"Apparatus for simultaneously disreefing a centrally reefed clustered parachute system". United States. https://www.osti.gov/servlets/purl/866627.
@article{osti_866627,
title = {Apparatus for simultaneously disreefing a centrally reefed clustered parachute system},
author = {Johnson, Donald W},
abstractNote = {A single multi-line cutter is connected to each of a cluster of parachutes by a separate short tether line that holds the parachutes, initially reefed by closed loop reefing lines, close to one another. The closed loop reefing lines and tether lines, one from each parachute, are disposed within the cutter to be simultaneously cut by its actuation when a central line attached between the payload and the cutter is stretched upon deployment of the cluster. A pyrotechnic or electronic time delay may be included in the cutter to delay the actual simultaneous cutting of all lines until the clustered parachutes attain a measure of stability prior to being disreefed. A second set of reefing lines and second tether lines may be provided for each parachute, to enable a two-stage, separately timed, step-by-step disreefing.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1988},
month = {Fri Jan 01 00:00:00 EST 1988}
}