Turret Gun Girder Stresses
[Technical Report, Formal Report]
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
Stresses were measured in a celluloid model of a turret gun girder for three angles of recoil - 0, 22 degrees 30, and 45 degrees. For all angles of fire the powder hoist section showed high tension normal to the recoil compression over nearly the entire panel. This was least for recoil at 22 degrees 30, averaging about 53 per cent of the compression stress across the forward and after edges of the panel and greater for 45 deg recoil, averaging 75 per cent of the compression. These high transverse tensions were accompanied by compression values much higher than necessary to balance the recoil of the gun. Compression across the forward edge of the powder hoist panel was least for 45 degree recoil when it was 50 per cent greater than the initial force, and greatest for 22 deg 30 recoil when it was 66 percent greater than the initial load.