AIRCRAFT GROUND-FLOTATION INVESTIGATION. PART VI. DATA REPORT ON TEST SECTION 5
Abstract
This data report describes work undertaken as part of an overall program to develop ground-flotation criteria for the C-5A aircraft. A test section was constructed to a width adequate for two test lanes. Each lane was divided into three items having different subgrade CBR values and different traffic surfaces. Item 1 was surfaced with modified T11 aluminum landing mat, item 2 with M8 steel landing mat, and item 3 was unsurfaced. Traffic was applied using a 140,000-lb test load with a twin-twin wheel configuration on one lane and a twin-tandem wheel configuration on the other lane. The twin-twin wheel spacings were 37-68-37 in. c-c and the twin-tandem spacings were 37-in. c-c twin, 60-in. c-c tandem. Each assembly consisted of four 56x16, 24-ply aircraft tires with an inflation pressure of 100 psi. This report presents the data collected on soil strengths, surface deformations and deflections, and drawbar pull. The traffic-coverage level at which failure was evidenced on each test item is also given.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1966
- Accession Number
- AD0809189
Entities
People
- W. J. Hill Jr.
- W. N. Brabston