Accession Number : AD0762730

Title :   Flight Test Evaluation of Folding Sidewall Expandable Tires on the C- 131B Aircraft

Descriptive Note : Technical rept. 17 Mar 1970-13 Oct 1971

Corporate Author : AERONAUTICAL SYSTEMS DIV WRIGHT FIELD OH

Personal Author(s) : Roberts, Larry A ; Wagner, Paul M

PDF Url : AD0762730

Report Date : Jan 1973

Pagination or Media Count : 147

Abstract : A C-131B aircraft was equipped with modified, instrumented main landing gear assemblies, and type III (low pressure), folding sidewall, 38.5/28 x 13.0-16 aircraft tires were mounted on the main landing gear wheels. Takeoffs, landings and taxi runs were made at four different aircraft weights and at both 35% and 50% tire deflection. Braking intensity varied from light to heavy both with and without reverse pitch. The test aircraft was equipped with an inflation/deflation system and the tires were deflated each time the landing gear was retracted and inflated each time it was extended. The tires could normally be deflated and folded within 15 seconds and reinflated within 10 seconds. Two rollouts were made with the test tires flat and the tires demonstrated excellent runflat capability at ground speeds of up to approximately 100 knots. Directional control was good and no damage to the aircraft or to the landing gear was sustained.

Descriptors :   *AIRCRAFT TIRES, *TRANSPORT AIRCRAFT, AIRCRAFT LANDINGS, FLIGHT TESTING, INFLATABLE STRUCTURES, TEST FACILITIES, TEST METHODS

Subject Categories : Transport Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE