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Essay on The Impact Of Airplane Streamlining
Streamlining is a basic part of every stroke, every calisthenics, and every race. It is basically a firm push from the wall or a dive from the blocks, plus the underwater glide. It provides the forward surge at the start and the completion of a turn. It moves the body through the water faster than it can swim. Swimmers who can streamline properly during a race will sharply reduce their times. The body position can be described as "straight as an arrow" with the arms and legs extended head down (in the backstroke, head back) and toes pointed. To be more effective, the body should be completely submerged. In the freestyle, backstroke, and butterfly, the kick (flutter or dolphin) begins almost instantly after the initial forward surge. In the breaststroke, the initial surge or glide is followed by a double-arm pull followed by another glide, followed by a kick and glide to the surface.
There are two theories on the preferred position of the hands in the glide. The one taught most often consists of placing one hand firmly over the other to form a traditional bow of a boat. I prefer to position the hands side-by-side, palms down (palms up in the backstroke) causing a hydro dynamic flow similar to the action of air to the wings of an airplane, that results in a lift and forward propulsion. The incorporation of stroke and conditioning into your workout will lead to improvement, which becomes a great motivational factor.( Paul T. Frankl (1930)
Powered heavier-than-air craft supported in flight by fixed wings. Airplanes can be propelled by the thrust of a jet engine, a rocket engine, or airscrew (propeller), as well as combinations of these. They must be designed aerodynamically, as streamlining ensures maximum flight efficiency....
