Accession Number:

AD0255982

Title:

EVALUATION OF THE IMPROVED EXTERNAL CARGO-SLING SYSTEM (VERTOL SWING HOOK) ON AN H-21 AND AN H-34 HELICOPTER

Descriptive Note:

Corporate Author:

ARMY AVIATION SCHOOL FORT RUCKER AL

Personal Author(s):

Report Date:

1961-03-08

Pagination or Media Count:

1.0

Abstract:

An evaluation was made of the cargo hook swing attachment for use on the H-21 and H-34 helicopters, to determine 1 general characteristics of the system, 2 desirability of retrofit of the system on H-21 and H-34 helicopters, giving consideration to the total cost of a retrofit program, and 3 suitability of this type system for application to new helicopters, such as HU-1D and HC-1B. The improved external cargo sling system Swing Hook for the H-21 helicopter is a hinged, externally retractable metal yoke to which a swivel hook is attached. The improved external cargo sling system for the H-34 helicopter is an internally retractable, folding, double-axis cargo swing to which a swivel hook is attached. It was recommended that 1 The Swing Hook be provided for retrofit purposes on H-21 helicopters, 2 No further consideration be given to the Vertol Swing Hook for the H-34 helicopter in its present configuration, 3 Investigation continue toward refinement of design for the H-34 installation, and 4 No consideration be given to the application of the Swing Hook to HU-1 helicopters. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE