Prevention of breakdown behind railgun projectiles

Details Prevention of breakdown behind railgun projectiles Prevention of breakdown behind railgun projectiles

1989-04-20

1992-09-01

Bentley, Stephen C.

Ordnance

Accelerating

124 3, F41B 600

Patent

active

051429624

ABSTRACT:
An electromagnetic railgun accelerator system, for accelerating projectiles (14, 15, 114, 214, 314, 444) by a plasma arc (3), introduces a breakdown inhibiting gas into the railgun chamber (26) behind the accelerating projectile (14). The breakdown inhibiting gas, which absorbs electrons, is a halide or a halide compound such as fluorine or SF.sub.6. The gas is introduced between the railgun rails (12) after the projectile (14) has passed through inlets (16) in the rails (12) or the projectile (114); by coating the rails (12) or the projectile (15) with a material (28) which releases the gas after the projectile (14 ) passes over it; by fabricating the rails (12) or the projectile (15) or insulators out of a material which releases the gas into the portions of the chamber (26) through which the projectile has travelled. The projectile (214, 314, 414) may have a cavity (232, 332, 432) at its rear to control the release of ablation products (4).

REFERENCES:
patent: 3939816 (1976-02-01), Espy
patent: 4343223 (1982-08-01), Hawke et al.
patent: 4433607 (1984-02-01), Kemeny
patent: 4437383 (1984-03-01), Deis et al.
patent: 4621561 (1986-11-01), Weldon
patent: 4706542 (1987-11-01), Hawke
patent: 4733595 (1988-03-01), Oberly
Gaynor, Frank, Aerospace Dictionary, 1960, p.1, "ablating materials".
Thio, et al, Feasibility Study of a Railgun as a Driver for Impact Fusion, DOE/ER/13048-3, Jun. 1986, pp. 6-1-6-5.
Webster's New World Dictionary of the American Language, College Edition, 1957, p. 731, "empregnate".
Grant, Julius, Hackh's Chemical Dictionary, 1970, p. 648, "s. hexafluoride"and p. 663 "Teflon".
Brady, George S., Materials Handbook, 1956, p. 562, "Nitrogen".
Winterberg, F., "The Electromagnetic Rocket Gun--A Novel Launch Concept", IEEE Transactions on Magnetics, vol. MAG-20, No. 2, Mar. 1984, pp. 370-372.
Ronald S. Hawke, Railgun Development for EOS Application: A Status Report,1987, p. 3.

Affiliated with

Also associated with

Rating

Prevention of breakdown behind railgun projectiles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Prevention of breakdown behind railgun projectiles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Prevention of breakdown behind railgun projectiles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-760903