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Space probe according to the detection of object is divided into lunar probe, probe and interplanetary spacecraft, small body such as a space probe to leave the speed of the earth must be large enough to overcome or get rid of the earth's gravity, realize the deep space flight. The probe orbits the heliocentric elliptical orbit (double-cut orbit) that is tangent to the earth's orbit and the planet's orbit, and may meet the target planet; Increase speed to change the orbit, flew to target the planet can shorten the time in order to ensure the detector fly the double track to the planetary orbits and tangent with the target when the target planets also run to it, must be chosen in the earth and the target planet at a particular moment of relative position detector. Detector can fly around the star, the use of planetary gravitational fields accelerate continuous multiple planets orbit the significant characteristic of space probe is, flying in space for long time, the ground cannot real-time remote control, so must have the ability of autonomous navigation; To fly outside the solar system, away from the sun, solar arrays, and nuclear energy systems; It is necessary to adopt special protective structure to withstand very severe space environment. Landing or walking on the surface of the moon or planet requires some special form of structure
The first known patent with an electric mixer, according to the book ?Antique Electric Mixers? by Dennis Thompson, was handed to Rufus W. Eastman in 1885. It was a peculiar machine developed to operate on electricity or water power. Herbert Johnston, an engineer around 1908 saw a baker blend bread dough with only an iron spoon. As a result, Johnston was inspired to produce the most popular standing mixer. Eighty quart commercial grade mixers went on the market and instantly were thought of as a large labor saving tool around 1914. Trying out a home model, the wife of an executive proclaimed that it is ?the most effective kitchen aid I?ve ever endured? and therefore a brandname name is made. Since then, the standard home based mixers may be called KitchenAid. Validating KitchenAid?s advertisement which stated that it is mixer with attachments could ?do everything!?, today?s attachments have the capability to make pasta, fill up sausage, crush food, squeeze citrus, in addition to creating frozen goodies.
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