Word: diagrams
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...American Physical Society that the earth is very slightly pear shaped. If its continents are evened out and its spin-flattening allowed for, it has a faint bulge around the North Pole, a faint depression around the South Pole, and a depressed ring in the north mid-latitudes (see diagram...
...into orbit (see NATIONAL AFFAIRS) is technically called a 1½-stage rocket-a single engine plus ground-fired boosters. When its two booster engines stop firing, the main body, propelled by the central sustainer engine, flies out of the short cylindrical after-section that carries the boosters (see diagram). With the boosters gone, the sustainer engine has less dead weight to carry into space. In this particular model, the sustainer was designed to burn 13 seconds longer than in the regular models. Without this extra thrust, needed to put the Atlas into orbit, it would have plunged into...
...simplest maneuver for a sailing spaceship, says Dr. Cotter, will be escape from the earth. The satellite will be placed in an orbit in the plane of the earth's orbit around the sun (see diagram). After spreading its sail, the satellite will be designed to have a slow turning motion, rotating once during every two trips around the earth. When it is moving away from the sun, its sail will be at right angles to the sun's light, and it will get the maximum push in a forward direction. By the time it gets...
...Angeles-Strategic Air Command's Vandenberg Air Force Base. The West Coast missile complex is designed to take up where Cape Canaveral leaves off; i.e., primarily to shoot operational missiles and train crews to handle them. One Western advantage : satellites can be flung thence into polar orbits (see diagram) without hazard to populated areas...
...Allen did not say so, but his diagram points out clearly that a cone-shaped area over the magnetic poles is almost radiation-free. Obvious conclusion: the space ports of the future may have to be in far northern Canada or Antarctica, where men can soar into space through the escape zones over the magnetic poles, thus eluding the lethal hazards of the Van Allen belt...