Word: sticked
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Dates: during 1960-1969
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...Mercury spacemen are tempted by three separate systems for controlling their capsules-manual, automatic and fly-by-wire. The manual system has direct mechanical connections between the control stick and the valves of a set of peroxide jets. When the astronaut moves the stick, steam blasts through selected jets to give the capsule the desired turning motion. Once it starts turning in frictionless space, it continues to turn, and it cannot be stopped without using more peroxide. Vigorous use of the manual system will quickly empty its fuel tank...
...third system at the astronaut's disposal, fly-by-wire, uses the jets and fuel supply of the automatic system, but is controlled by the hand stick. Instead of opening the peroxide valves directly, fly-by-wire works them through a set of electrical actuators. It is faster than automatic and smoother than manual control, but if it is used impatiently, it quickly drains the fuel of the automatic system...
...device something like power steering on an automobile. As a result, he fell behind in his experiments, and began using up precious hydrogen peroxide, the fuel that is ejected as a gas to turn the capsule in flight. Says one Mercury official: "These guys all want to wobble the stick, and that's where the damn fuel goes." Balloon Bust. Little things kept going wrong. Passing over Nigeria, the temperature in Carpenter's suit went...
...deeper probing of key issues, he finds that "many more facts stick with students." His goal is student involvement: "I'm trying to find the upper limit of the adolescent mind-and I'm coming to the conclusion that there...
...Good for Treasure. Ancient rubbish, garbage and human excreta are easily detectable. So are buried walls, whose stones usually have different magnetic properties from the material that covers them. Empty spaces, such as buried tombs, stick out like magnetic sore thumbs. Most conspicuous of all are objects of iron or steel, but the magnetometer does not detect gold and silver, and it will be of little use to treasure seekers...