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HARP Gun

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Project HARP 16 inch
Used with permission of Stephen E. Mendes - visit his Barbados Photo Gallery
Credit: © Stephen E. Mendes

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Status: Development ended 1966. Payload: 1,300 kg (2,800 lb). Thrust: 127,000.00 kN (28,550,000 lbf). Gross mass: 450 kg (990 lb). Unfuelled mass: 1.00 kg (2.20 lb). Specific impulse: 365 s. Specific impulse sea level: 43 s. Burn time: 0.0100 s. Height: 36.59 m (120.04 ft). Diameter: 0.42 m (1.37 ft). Span: 0.42 m (1.37 ft). Location: 1072.

Using 450 kg of M8M propellant, with optimum web size, and a maximum muzzle pressure of 4100 atmospheres, the gun had the following performance:

• 250 kg projectile accelerated at 13,000 peak G's to 2,300 m/s muzzle velocity
• 500 kg projectile accelerated at 9,000 peak G's to 1,900 m/s muzzle velocity
• 750 kg projectile accelerated at 6,500 peak G's to 1,680 m/s muzzle velocity
• 1,000 kg projectile accelerated at 5,000 peak G's to 1,550 m/s muzzle velocity

Release velocity: 1,072 m/s (3,517 ft/sec). Release altitude: 27 m (87 ft). Release conditions: 298 m/s losses from muzzle exit velocity..

Photo Gallery

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Project HARP 16 inch Used with permission of Stephen E. Mendes - visit his Barbados Photo Gallery Credit: © Stephen E. Mendes

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HARP 16 inch gun

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