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U.S. Department of Energy
Office of Scientific and Technical Information

LLL 40 mm gun: compressed helium breech performance

Conference ·
OSTI ID:6373873

The LLL 40 mm gun system, developed for 1-dimensional impact studies of toxic materials has now been test-fired using two propelling techniques. The gunpowder breech described in an earlier report is now capable of propelling our 158 gram projectile up to 2 Km/sec, satisfying the high velocity requirements. The low velocity impacts below 0.5 Km/sec are produced by applying a blast of compressed helium to the base of the projectile. The design and testing of the compressed gas breech are described.

Research Organization:
California Univ., Livermore (USA). Lawrence Livermore Lab.
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
6373873
Report Number(s):
UCRL-81557; CONF-780879-1
Country of Publication:
United States
Language:
English