Accession Number:

AD0499469

Title:

Rotating Band Study. Test of 3-in./70 AA Projectiles with Armco Iron Rotating Bands

Descriptive Note:

Partial rept. nos. 1 and 2

Corporate Author:

NAVAL PROVING GROUND DAHLGREN VA

Personal Author(s):

• Lyddane, R. H.
• Butler, R. B.

Report Date:

1951-11-29

Pagination or Media Count:

35.0

Abstract:

3-in.70 projectiles of various types, fitted with gilding metal rotating bands, have been observed to exhibit serious band wear that is, partial or complete obliteration of the engraving of the bands recovered after firing. It was desired to investigate the effect of replacing the gilding metal with soft iron, in order to determine the results of using a material with a considerably increased melting point, and if this change would produce a band which did not fail, to determine the effect upon gun performance.

Descriptors:

• *ROTATING BANDS
• IRON
• COPPER
• WEAR RESISTANCE
• INTERIOR BALLISTICS
• ANTIAIRCRAFT AMMUNITION
• PROJECTILES
• HARDNESS

Subject Categories:

• Ammunition and Explosives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE