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Modern Art Solid-fuel: For tactical reasons, the trend in missile development is toward lighter vehicles and solid propellant charges. A solid-fuel rocket needs less maintenance and is, once installed, ready, for firing with very little delay. For military purposes, solid-fuel rockets are preferable, even though solid rocket fuels cost about ten times as much as liquid fuels on a weight basis.
Japanese rocket work during World War II to have suffered from low appropriations lack of interest in the higher echelons. The :se did, however, use a few rocket units to airplane bombs and modern art solid-fuelillery projectiles which not have their normal carriers or guns. Postwar Period.—The fuel chemists who toped solid fuel rocket charges did not achieve greatest triumphs during World War II, but iwards. During the war a solid charge ing 200 or 300 pounds looked like a distant Only 10 years after the war solid fuel charges of a weight of more than one ton were almost commonplace.
Likewise the 63-foot, liquid-fuel Redstone has been replaced by the 34-foot, solid-fuel Pershing, with a range of about 350 miles. The largest United States solid-fuel missiles are the underwater-launched Polaris-3 (30V^-feet, 30,000 pounds, with a range of more than 2,500 miles) and the Minuteman (55-feet, 65,000 pounds, with a range of more than 6,000 miles). |
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