STAGE 4 - SECONDARY BOOSTER
ANSA ARROW IV HEAVY LIFT
BOOSTER
STAGE 4 - SECONDARY BOOSTER
Stage 4-Secondary Booster- Technical Specifications |
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| Diameter of Stage 4 section: | 33 feet |
| Height of Stage 4 section: | 82 feet |
| Weight of Stage 4 section (fueled): | 1,100,000 lbs (fully fueled) |
| Weight of Stage 4 section (empty): | 87,000 pounds (empty) |
| Reaction Engines Installed in Stage 4: | One J8 modified to J8A specs |
| Chemical Propellants Used For Fueling: | Liquid Oxygen (348,000
gallons) Liquid Hydrogen (284,000 gallons) |
| Combined Thrust Output: | 1,500,000 lbs. |
| Thrust Duration: | 210 seconds |
TECHNICAL DATA-The fourth stage burns over two tons of fuel per second during the three and a half minutes of operation. During this time, the Arrow IV will achieve a altitude of 54 nautical miles and a speed approaching 13,000 miles per hour. After main engine cut-off, the "Icarus" will coast for approximately ten seconds before firing explosive charges which separate the connecting ring that joins Stage Four with Stage Three. Stage Four and the connecting ring gently fall away, each losing speed to the pull of the Earth's gravity. Ten seconds after Stage Four burnout the main engines of Stage Three ignite and continue to accelerate the "Icarus" out of the atmosphere and the gravity well.
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