AIRCRAFT TIRE/WHEEL INTERFACE-LOAD MEASUREMENT

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$264,287.00
Award Year:
1991
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
12736
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
New Hampshire Material Laborat
62a Littleworth Rd, Dover, NH, 03820
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
James A Sherwood
(603) 862-2624
Business Contact:
() -
Research Institution:
n/a
Abstract
IN LATE 1986, WRDC/FIEVA INITIATED AN IN-HOUSE PROGRAM TO INVESTIGATE EXPERIMENTAL AND ANALYTICAL METHODS FOR AIRCRAFT-WHEEL-LIFE ESTIMATION AND VERIFICATION. AS PARTIAL FULFILLMENT OF THIS PROGRAM, STRUCTURAL MODELS OF TIRES AND A NEW STOCHASTIC CRACK GROWTH MODEL FOR THE WHEEL FRACTURE BEHAVIOR ARE BEING DEVELOPED. TO COMPLEMENT THESE RESEARCH EFFORTS A TIRE-WHEEL INTERFACE MODEL THAT YIELDS A DESCRIPTION OF THE WHEEL FLANGE AND BEADSEAT LOADS IS REQUIRED. PRESENTLY, THE BOUNDARY CONDITIONS AT THE TIRE-WHEEL INTERFACE ARE UNKNOWN. THE OBJECTIVE OF THIS RESEARCH PROPOSAL IS TO INVESTIGATE THE FEASIBILITY OF DEVELOPING A METHODOLOGY FOR ACCURATELY MEASURING THE LOAD DISTRIBUTION AT THE TIRE/WHEEL INTERFACE. A VARIETY OF COMMERCIALLY AVAILABLE PRODUCTS INCLUDING CONDUCTIVE RUBBER, FERRITE FLUID, PIEZOELECTRIC CRYSTALS AND CAPACITIVE DEVICES WILL BE STUDIED FOR USE IN A TOTALLY NEW INSTRUMENTATION DEVICE. THE LOADS MEASURED WITH THE PROPOSED DEVICE WILL BE USED IN EXISTING FINITE-ELEMENT MODELS OF AIRCRAFT WHEELS TO EVALUATE THE WHEEL'S COMPLETE STRUCTURAL RESPONSE TO THESE LOADS.

* information listed above is at the time of submission.

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