IMPROVED HELICOPTER EXTERNAL-SLING-LOAD CAPABILITY

Abstract

Helicopters flying with various external loads have experienced situations wherein the load became so unstable that either the load had to be released or the speed had to be reduced drastically. A solution to the greater part of this external-load problem was found in the design of a new sling harness, commonly referred to as a swing. This swing, by virtue of its kinematics, raises the effective point-of-loadATTACHMENT CLOSER TO THE CENTER OF GRAVITY OF THE HELICOPTER. Tests were conducted on the H-21, H-34, and H-37 helicopters. Results showed that the swing system eliminated or so reduced the moments exerted on the helicopter by the external load that high forward speeds are permitted. Offset lifting and high-speed turns and stops can also be performed as routine maneuvers.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1961
Accession Number
AD0270171

Entities

People

  • Robert D. Powell Jr.

Tags

Communities of Interest

  • Air Platforms
  • Biomedical
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aircrafts
  • Ammunition
  • Center Of Gravity
  • Electricity
  • Engineering
  • Engineers
  • Government Procurement
  • Helicopters
  • Laboratory Equipment
  • Maneuvers
  • Military Operations
  • Schools
  • Standards
  • Static Electricity
  • Test And Evaluation
  • Transportation
  • War Colleges

Readers

  • Aerodynamics/Aeronautics.
  • Aerospace Engineering
  • Economics