PINS AND BUSHINGS OF ARTICULATED LANDING GEAR LINKAGE JOINTS IMPROVEMENTS

Award Information
Agency:
Department of Defense
Branch:
Air Force
Amount:
$250,000.00
Award Year:
1987
Program:
SBIR
Phase:
Phase II
Contract:
N/A
Agency Tracking Number:
3925
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Foster-miller Inc.
350 Second Ave, Waltham, MA, 02254
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
N/A
Principal Investigator
 Andrew C Harvey
 (617) 890-3200
Business Contact
Research Institution
N/A
Abstract
THE COSTS OF REPAIRING WORN LANDING GEAR LINKAGE JOINTS IS PROHIBITIVE. SINCE WEAR IS SUSTAINED BY SOFT BUSHINGS INSTEAD OF HARD PINS, THE LANDING GEAR MUST BE DISASSEMBLED, THE BUSHINGS REMOVED, THE LUGS RENOVATED, AND THE GEAR REASSEMBLED. THIS PROPOSAL PRESENTS MEANS TO REDUCE THE COST OF JOINT REPAIRS. DISCUSSED ARE NO-WEAR SOLUTIONS (HARD BUSHINGS, HARD PINS); SOLUTIONS IN WHICH THE PINS WEAR RATHER THAN THE BUSHINGS (HARD BUSHINGS, HARD PINS WITH SOFT SURFACES); AND A NOVEL SOLUTION USING A FLOATING SACRIFICIAL INTERMEDIATE MEMBER (HARD BUSHINGS, HARD PINS, SOFT INTERMEDIATE MEMBERS). THE SYSTEMATIC SELECTION OF MATERIALS, SURFACE COATINGS, AND SURFACE TRANSFORMATION PROCESSES BY TRIBOLOGICAL ANALYSIS IS INTRODUCED, AND A PROGRAM FOR SIMULATION-TESTING OF EXPERIMENTAL PINS AND BUSHINGS IS DESCRIBED.

* information listed above is at the time of submission.

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