Ammunition and explosives – Projectiles – Composite
Patent
1991-06-20
1992-04-14
Tudor, Harold J.
Ammunition and explosives
Projectiles
Composite
F42B 1406
Patent
active
051037351
ABSTRACT:
An improved segmented doubled ramp sabot for launching a sub-caliber projile, comprising a plurality of longitudinal ribs disposed on the forward and aft ramp sections of the sabot, and a plurality of longitudinal ribs disposed between an obturating band seat and a conical borerider. The combined cross sectional area of the double ramp segments, together with the combined cross sectional area of the ribs, are such that the sum of these areas is approximately equal to the cross sectional area of a double ramp sabot representative of prior art. As a result, axial stiffness is unaffected, and uniform shear traction forces between the sabot and projectile are maintained. In addition, the transverse bending stiffness of the sabot is improved, thereby reducing in-bore vibration and shot dispersion while allowing maximum energy transfer to the projectile. Use of a stiffer material for the ribs further improves transverse bending stiffness and performance.
REFERENCES:
patent: 4284008 (1981-08-01), Kirkendall et al.
patent: 4326464 (1982-04-01), Price
patent: 4608927 (1986-09-01), Romer et al.
patent: 4800816 (1989-01-01), Meyer
Burns Bruce P.
Kaste Robert P.
Plostins Peter
Wilkerson Stephen A.
Elbaum Saul
Shapiro Jason M.
The United States of America as represented by the Secretary of
Tudor Harold J.
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