DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
ADB006866
Title:
25MM Plastic Telescoped Cartridge Case Development Program
Descriptive Note:
Final rept. 1 May-30 Sep 1974
Corporate Author:
BRUNSWICK CORP SUGAR GROVE VA TECHNICAL PRODUCTS DIV
Report Date:
1975-01-01
Pagination or Media Count:
283.0
Abstract:
This study concludes that 1 The feasibility of a plastic cartridge case utilizing molded propellants and a telescoped projectile has been demonstrated successfully at ambient conditions and at -65 F 2 Experimental investigations have shown that the cartridge case will withstand peak chamber pressures greater than 100,000 psi and extract from the gun chamber without difficulty 3 The feasibility of an all plastic primer has been demonstrated 4 The chamber seal has been observed to have a significant effect on ballistic performance and a compatible plastic seal has been demonstrated successfully at peak chamber pressures up to 80,000 psi 5 The manufacturing feasibility of a zero draft, injection molded case has been demonstrated 6 The plastic case provides the potential to minimize the ballistic performance deficiencies of the GAU-7A program 7 The feasibility of a push-through or push-out cartridge case ejection was demonstrated in a single shot fixture and 8 The cartridge case and seal materials that were demonstrated to be most compatible to the ballistic environment were Huels 38 glass filled nylon 12 and DuPont Zytel 151 nylon 66.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
