Calibration Loading of a Strain-Gauged Diverless Helicopter Weapon Recovery System.

reportActive / Technical Report | Accession Number: ADA151486 | Open PDF

Abstract:

This memorandum from Australia presents the results of a ground calibration loading test carried out on the Diverless Helicopter Weapon Recovery System DHWRS. The DHWRS is essentially an aluminum alloy 6061-T6 cage, suspended by a cable from a helicopter, that is used to recover Mk48 torpedoes from the sea. It had been found that some DHWRS used in service had developed cracks at the welds in the aft ring. It was decided that the structural integrity of the DHWRS should be verified. This was done by a calibration loading test to determine the strains for typical loading conditions, and for a load of 24050N, which corresponds to the US Navy static proof load for the acceptance of the DHWRS. A regression analysis was carried out on the loadstrain data. Equations relating applied load to measured strain are presented for several locations, including the critical position on the aft ring. Stress levels for a load of 24050N were calculated from the loadstrain data. Keywords include Recovery vehicles, and Underwater equipment.

Author(s):
Heller, M.
Author Organization(s):
AERONAUTICAL RESEARCH LABS MELBOURNE (AUSTRALIA)
Descriptive Note:
Technical memo.,
Pagination:
0043

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ARL-STRUC-TM-386
 Subject Terms
Joint Capability Areas:
JCA_6.1.1_Wired Transmission; JCA_6_Net Centric; JCA_6.1.3_Switching and Routing; JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_6.1_Information Transport; JCA_6.4.1_Secure Information Exchange; JCA_1_Force Support; JCA_1.3_Human Capital Management; JCA_6.4_Information Assurance
Communities of Interest:
Weapons Technologies
Descriptor(s):
*LOADING(HANDLING), *HELICOPTERS, *RECOVERY VEHICLES, STRESS STRAIN RELATIONS, TORPEDOES, ALUMINUM ALLOYS, STRUCTURAL PROPERTIES, CRACKS, STRAIN(MECHANICS), REGRESSION ANALYSIS, RELIABILITY, CALIBRATION, AUSTRALIA, UNDERWATER EQUIPMENT
Field(s)/Group(s):
Helicopters
Keyword(s):
Calibration loading, DHWRS(Diverless Helicopter Weapon Recovery System)
Report Date:
1984 Jul 01