Accession Number:

ADA097744

Title:

Air Cushion Landing System Stability Study.

Descriptive Note:

Final technical rept. 30 Jun-19 Sep 80,

Corporate Author:

WASHINGTON STATE UNIV PULLMAN DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

1981-02-01

Pagination or Media Count:

65.0

Abstract:

An analysis of an inelastic ACLS plunge mode dynamic model is presented. The ACLS has unrestrained side elements and frozen end elements. The model exhibits unstable behavior at certain operating conditions for which the side elements are in contact with the ground. A linear analysis showed this instability to be due mainly to the altitude sensitivities of the cushion to atmosphere airflows and the attendant influence on the dynamic pressure forces on the vehicle. The model instability can be alleviated by isolating side and end elements so that they are all unrestrained and by simultaneously venting the air cushion directly to atmosphere. Author

Subject Categories:

  • Numerical Mathematics
  • Surface Effect Vehicles and Amphibious Vehicles

Distribution Statement:

APPROVED FOR PUBLIC RELEASE