Safe and arm device with variable arming delay by liquid explosive
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorLee R. Hardt
Life of this patent
Estimating the term…
Abstract
A safe and arm device, which has an explosive train interrupted by a void establish a safe condition, has the void filled with a liquid explosive to establish an armed condition. The void may be in a manometer-like device in which the liquid explosive is motivated by fluid pressure corresponding to free-fall or other velocities. Premature arming may be prevented by forming the explosive liquid by melting a solid explosive with heat generated electrically. A selectively variable arming time delay may be provided by a variable orifice controlling the flow of the liquid explosive or by varying the temperature of the liquid to select its viscosity.
Claims6
A safe and arm device having an assembled condition and comprising:
- an explosive train having a predetermined region, said region being substantially void to establish a safe condition of said train by interrupting progress of an explosion along the train;
- an explosive liquid;
- storage means spaced from said region for storing said explosive liquid;
- conduit means extending between said storage means and said region;
- means for urging said explosive liquid to flow from said storage means through said conduit means into said region to establish an armed condition of said train;
- first control means operable in said assembled condition for varying a flow of said explosive liquid through said conduit means;
- and
- second control means operable in said assembled condition for adjusting said first control means to select a desired time subsequent to said safe condition and elapsing during conduction of said explosive liquid from said storage means to said region to establish said armed condition.
A safe and arm device comprising:
- an explosive train having a predetermined region, said region being substantially void to establish a safe condition of said train by interrupting progress of an explosion along the train;
- an explosive liquid, wherein the viscosity of said explosive liquid varies with temperature;
- storage means spaced from said region for storing said explosive liquid;
- conduit means extending between said storage means and said region;
- means for urging said explosive liquid to flow from said storage means through said conduit means into said region to establish an armed condition of said train;
- and
- flow control means
- for selecting a flow of said explosive liquid through said conduit means subsequent to said safe condition to vary a time elapsing during conduction of said explosive liquid from said storage means to said region to establish said armed condition, and
- for controlling the temperature of said explosive liquid to select a temperature of said explosive liquid corresponding to a predetermined viscosity thereof such that said time elapses during conduction of said explosive liquid from said storage means to said region.
Dependencies are inferred from the claim text.