USA As Represented by Secretary of the Navy

Nathan B Speirs

Jesse L Belden

Aren M Hellum

David E Yamartino

A variable diameter conical nose is provided. The conical nose includes a cone formed from a circular sheet of ductile material having a sector removed. The formed cone has a first overlapping portion and a second overlapping portion overlying the first overlapping portion. The first overlapping portion is fixed and the second overlapping portion is free to move. The conical nose includes an actuator capable of varying the diameter of the cone by moving the second overlapping portion relative to the first overlapping portion.

Variable diameter conical nose

Methods and systems are provided for a pressurized gas launcher. The pressurized gas launcher includes a pressure source providing a quantity of high-pressure gas, a launcher barrel having a first end and a second end having an opening, and a bladder. The bladder is housed within the launcher barrel and selectively fluidically coupled to the pressure source. When filled with pressurized gas, the bladder plastically deforms. The gas launcher further includes a projectile housed within the launcher barrel with the bladder positioned between the first end of the launcher barrel and the projectile. The projectile is dischargeable from the launcher barrel when the bladder ruptures when gas in the bladder exceeds a pressure threshold.

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Newport, RI, United States of America

Nathan B Speirs