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Emergency descent deviceA descent device is provided for emergency descent from tall structures and for lowering objects from high elevations, such as a hovering helicopter. The device includes a rotating spool having a cable wound thereon for descent and a rotation-retarding vane member which rotates in a fluid cylinder. An adjustable bypass is provided for the fluid as the vane member rotates therein so that the speed of descent can be adjustably controlled.
Document ID
19770014900
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Belew, R. R. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
August 8, 2013
Publication Date
April 19, 1977
Subject Category
Man/System Technology And Life Support
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-623188
Patent Number: US-PATENT-4,018,423
Patent Number: NASA-CASE-MFS-23074-1
Accession Number
77N21844
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,018,423|NASA-CASE-MFS-23074-1
Patent Application
US-PATENT-APPL-SN-623188

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