Shock simulator
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorWilliam G. Soper
Life of this patent
Estimating the term…
Abstract
A projectile ground shock simulator for simulating the force pulse on a pectile in testing for shock effect on the guidance system of the projectile. The simulator incorporates a liquid/solid material as an energy absorbing and storing spring for simulating the force pulse on the projectile. The projectile is positioned in a drop tube and impacted with a drop vehicle to simulate the forces created during firing of the projectile. The drop vehicle is provided with the liquid/solid spring having a piston and cylinder on the impact face of the drop vehicle. The cylinder is filled with a liquid or solid polymer material having a high bulk modulus of compressibility which gives the spring volumetric stiffness. The spring thus duplicates the force pulse acting on a fired projectile and also allows for the drop vehicle to be reused.
Claims10
A device for simulating a shock pulse on a projectile, comprising:
- means for stationarily positioning the projectile to receive a direct impact;
- means for directly impacting the projectile, and means for directly impacting mounted in spaced apart relationship with the projectile;
- and
- means for producing a shock pulse on the projectile from the direct impact thereon, said means for producing the shock pulse mounted to said means for directly impacting and positioned between said means for directly impacting and the projectile.
A device for simulating a shock pulse on a projectile, comprising:
- means for stationarily positioning the projectile for direct impact thereon;
- means for directly impacting the projectile, and means for directly impacting mounted spaced apart from the projectile;
- means for producing a shock pulse on the projectile from the direct impact thereon, said means for producing the shock pulse mounted to said means for directly impacting and positioned between said means for directly impacting and the projectile, comprising:
- a cylinder and piston forming a chamber mounted on a drop vehicle;
- and
- an energy storing and absorbing material in the chamber, said chamber and material decreasing in volume and having an equal hydrostatic force in all directions upon impact with the projectile and returning to the original volume after impact.
Dependencies are inferred from the claim text.