Accession Number:

ADP005934

Title:

Uses and Properties of Al-Li on the New EH101 Helicopter,

Descriptive Note:

Corporate Author:

WESTLAND HELICOPTERS LTD YEOVIL (UNITED KINGDOM)

Personal Author(s):

Report Date:

1989-08-01

Pagination or Media Count:

19.0

Abstract:

The EH101 is a long range, large capacity helicopter developed and built jointly by Westland Helicopters of the UK and Agusta of Italy to meet the needs of civil, naval and utility operations and in which many new aerodynamic, electronic and structural design concepts are successfully combined. In order to effect significant structural weight reductions, extensive use will be made of aluminium-lithium based alloys which are now becoming commercially available. The results of a weight-saving cost analysis favour the use of aluminium-lithium sheet, extruded profiles and forgings on the EH101, while corresponding plate and extruded bar will not be used due to the combined effects of low utilisation rate and the inherently higher material cost of aluminium-lithium. Keywords Alloys, Great Britain, EH101 Helicopters, Metallurgy, Uses and properties. JG

Subject Categories:

  • Properties of Metals and Alloys
  • Helicopters

Distribution Statement:

APPROVED FOR PUBLIC RELEASE