Word: accelera
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...make the satellite stick safely to its orbit. Reaching orbital speed is the job of the third-stage rocket. The final rocket will be small and will use solid fuel, which requires no tricky pumps or valves. It will fire for 30-60 seconds, depending on how much accelera tion the delicate instruments in the satellite can take without damage. When the fuel is gone, the burned-out rocket will be on an orbit. Rosen figures that it will have enough speed to carry it around an ellipse whose apogee (highest point) will be 1.400 miles above the earth...
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