Accession Number:

ADA279602

Title:

Super-Heavy Aircraft Study

Descriptive Note:

Final rept.

Corporate Author:

ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB

Report Date:

1994-04-01

Pagination or Media Count:

73.0

Abstract:

The test data for performance of flexible pavements were collected, sorted, and tabularized. The test data were analyzed using Boussinessq and layered elastic pavement models. To assist in the analysis, two computer programs were developed. The first program used the Boussinessq model to compute equivalent single-wheel loads. This program will compute the equivalent single- wheel load considering any selected cutoff distance. The second program used layered elastic theory for the analysis of pavements structures. The program has the capability of determining maximum pavement response for several response parameters, determining allowable loads for selected performance criteria, and computing a new layered elastic aircraft classification number. Several different performance criteria were developed including deflection criteria employing different cutoff distances, and strain criteria determined from the layered elastic pavement model. It was shown that deflection and strain criteria could be developed for the design of heavy multiwheel aircraft which would be independent of the number of tires in the aircraft gear. Performance criteria based on deflection, vertical strain, horizontal shear strain, maximum shear strain, and octahedral strain were incorporated into the layered elastic computer program to give predictions for pavement performance. Comparisons of the strain criteria were made with the current design criteria.

Subject Categories:

  • Terminal Flight Facilities

Distribution Statement:

APPROVED FOR PUBLIC RELEASE