Development and Test of Nylon Rotating Band for 20mm High Velocity Projectile
Abstract
The extreme temperature firing indicated that a band design and a method of molding have been achieved which produce a band that is retained in flight at all firing conditions. The rapid fire results showed that very satisfactory performance of the band is obtained even in a very hot gun. In chromium-plated barrels the nylon bands produce a spectacular increase in gun life. One barrel has been fired for over 2400 rounds on a severe schedule with practically no wear, while a similar barrel fired on the same schedule with gilding-metal bands was worn out after 1000 rounds. Unplated barrels also show an increase in life with nylon bands, but not to a similar extent. No evidence of band loss in rapid fire has been observed. Yaw performance in rapid fire has been in some cases inferior to that observed with gilding-metal bands, but none of these cases having occurred at less than 150 rounds of burst firing, they are not considered to be of importance in service use. The short-range dispersion obtained in rapid fire is generally comparable with that obtained with gilding-metal bands. In accuracy firing (slow fire in a Mann barrel) acceptable dispersion at long range is obtained. A report bearing on the storage life of nylon bands is in preparation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1955
- Accession Number
- AD0058544
Entities
People
- R. B. Butler