Ordnance – Accelerating
Patent
1989-04-06
1990-07-31
Bentley, Stephen C.
Ordnance
Accelerating
124 3, 310 14, F41F 102
Patent
active
049442120
ABSTRACT:
A rail gun utilizing a combination of chemical energy for propelling a piston and a projectile. The piston movement creates electromagnetic energy in rails which further increases the velocity of the projectile as it leaves the gun barrel. In operation, propellants are introduced into the gun and ignited. High pressure gas produced from the combustion accelerates the piston and the projectile along the rails. An external field normal to the piston is applied from a dipole magnet wound around the gun bore. The piston movement induces emf thus charging the rails which act as an inductor. The current flowing in the rails further increases the velocity of the projectile along the barrel to its final exit velocity.
REFERENCES:
patent: 3126789 (1964-03-01), Meyer
patent: 4796511 (1989-01-01), Eyssa
patent: 4817494 (1989-04-01), Cowan
patent: 4846911 (1989-07-01), Tackett et al.
Peterson et al., "Design and Testing of High-Pressure Railguns and Projectiles", IEEE Transactions on Magnetics, vol. MAG-20, No. 2, Mar. 1984, pp. 252-255.
Bentley Stephen C.
Duncan John R.
General Dynamics Corporation Convair Division
Gilliam Frank D.
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