Accession Number:

AD0905236

Title:

Improved FMU-68/B Fuze

Descriptive Note:

Final rept. Feb 1971-May 1972

Corporate Author:

KDI POLY-TECHNIC CINCINNATI OH

Personal Author(s):

Report Date:

1972-05-01

Pagination or Media Count:

99.0

Abstract:

An improved FMU-68B mechanical fuze, designated as FMU-68AB modified fuze, was designed and tested during a twelve-month period. The design objective was to provide additional safety features to the fuze which eliminate hazards encountered during upload and download of fuzed bombs. The fuze fits into the well of an AN-M23A1 igniter which is compatible with BLU-27BB and BLU- 32AB firebombs. The fuze has a built-in timer with a predetermined arming delay of 0.30 to 0.50 second which provides safe separation from the aircraft. The uploaded FMU-68AB modified fuze can be restored to preflight condition by replacement of the safety cap and installation of a new safety wire if the arming wire lanyard has not been extracted from the fuze during the flight. Environmental tests were performed and test results formulated. One hundred twnety-five FMU-68AB modified fuzes were shipped to Eglin Air Force Base for evaluation. It was concluded from the program effort that the FMU-68AB modified fuze represents a significant increase in safety over the FMU-68B fuze and that the improved fuze functions well within specification.

Subject Categories:

  • Pyrotechnics
  • Aerial Bombs

Distribution Statement:

APPROVED FOR PUBLIC RELEASE