Accession Number:

ADA001101

Title:

Mechanical Instability Ground Dynamics Program

Descriptive Note:

Final rept.

Corporate Author:

KAMAN AEROSPACE CORP BLOOMFIELD CT

Personal Author(s):

Report Date:

1974-03-01

Pagination or Media Count:

61.0

Abstract:

A state-of-the-art survey has been performed to determine if any work has been performed which associates soil dynamics with mechanical instability in helicopters. None was found. No data pertaining to the range of near surface soil dynamic properties were found. A method of determining the mechanical stability of a helicopter in contact with the soil has been developed. A parametric study has been performed to examine the UH2 helicopter under conditions of a range soil properties. It was found that there are ranges of parameters which will cause mechanical instability. It is recommended that a program be initiated to obtain quantitative near surface dynamic characteristics of representative soils through field testing.

Subject Categories:

  • Helicopters
  • Soil Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE