Accession Number : ADA307710

Title :   Orion P3C Horizontal Stabiliser Strain Survey and Corrosion Repair Development.

Descriptive Note : Technical rept.,

Corporate Author : DEFENCE SCIENCE AND TECHNOLOGY ORGANIZATION CANBERRA (AUSTRALIA)

PDF Url : ADA307710

Report Date : NOV 1995

Pagination or Media Count : 49

Abstract : This report presents results of an experimental investigation into the stress/strain field at the lower skin root region of the P3 horizontal stabiliser. Thermo elastic and strain gauge methods were used with a bare structure P3 tail-plane loaded under laboratory conditions. Applied load was restricted to 60% of design limit by the nature of the test article and the loading rig. The results show that the stresses in the region of interest are predominantly spanwise in direction. Stress concentrations consisting typically of 30% in-plane shear stress and 70% spanwise stress were found to occur near the inboard corners of each of the three lower skin planks. The largest of these was found at the forward corner of the forward plank. The load transfer between the skin panels and the spars was found to take place over the inboard lOO mm of the stabiliser. A bonded repair to corrosion damage has been presented on the basis of the bonded joints in the repair being stronger than the surrounding parent material. This repair design is not in any way dependent on the stress/strain test results and falls within the requirements of the recently produced RAAF Engineering Standard C5033. The region has a complex stress distribution due to the stabiliser skin panels terminating at the fuselage. Laboratory investigation of this stress distribution has been brought about by the availability of a suitable test article and has provided valuable ancillary information.

Descriptors :   *ADHESIVES, *HORIZONTAL STABILIZERS, *PATROL AIRCRAFT, STRESS STRAIN RELATIONS, CORROSION, REPAIR, BONDED JOINTS, SHEAR STRESSES, FUSELAGES, STRAIN GAGES, SKIN(STRUCTURAL), STRUCTURAL INTEGRITY.

Subject Categories : Patrol and Reconnaissance Aircraft
      Adhesives, Seals and Binders

Distribution Statement : APPROVED FOR PUBLIC RELEASE