Accession Number:

ADA030197

Title:

Specialists Meeting on Helicopter Design Mission Load Spectra

Descriptive Note:

Conference proceedings

Corporate Author:

ADVISORY GROUP FOR AEROSPACE RESEARCH AND DEVELOPMENT NEUILLY-SUR-SEINE (FRANCE)

Personal Author(s):

Report Date:

1976-08-01

Pagination or Media Count:

74.0

Abstract:

As mission requirements cause the utilization of any helicopter fleet to vary significantly over the fleets life time, the problem of predicting the structural life of fatigue-critical components becomes more complex. A prime factor in the inability to accurately predict component lives is the lack of adequate mission load-spectra data, which is compounded by the increased aircraft performance that has resulted in more sophisticated mission profiles. The impact of the fatigue spectra on life has been well documented showing that, for the same load levels, merely changing loading sequence dramatically changes the number of cycles to failure. A more accurate representation of the effects of not only load levels but load sequence will provide more realistic fatigue analyses and life predictions. In order to stimulate the collection of such data and to pool the approaches of the helicopter-producing NATO Nations, a Specialist Meeting was organized. The presentations, an overview and the subsequent discussions are published in this volume. Among the subjects covered are the development of load spectra for design, the adaptation of this for life predictions in the field, and mission load data gathering techniques.

Subject Categories:

  • Helicopters
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE