Aircraft propulsion propeller

Algebra calculus inorganic chemistry organic chemistry physical chemistry optics modem physics statics aerodynamics thermodynamics strength of materials propulsion propeller and rotor theory vehicle performance aircraft design avionics orbital mechanics spacecraft design. 

Combustion is the entire process by which something is oxidized. It is part of the use of gasoline or diesel fuel in automobiles and trucks, as well as part of propulsion in aircraft either in jet engines or propeller engines. This latter association is so often made that the propulsive devices in aircraft are called combustors. Similarly, furnaces and boilers, that often involve flames for the production of heat, are combustion devices involving many of the elements of the complete process. Incinerators, too, are commonly associated with combustion of fuel in the form of waste materials. Other common manifestations of coiiibustioii are house, forest, and chemical fires ... 

Aliphatic hydrocarbons petrol, paraffin. In the U.S.A. several types of combustibles for liquid propellant jet aircraft are used. One of them, i.e. JP-4, is employed for rocket propulsion, with nitric acid as an oxidizing agent (it can also be used with hydrogen peroxide or liquid oxygen). The specification of JP-4, is as follows ... 

The second class is the turbo-props, or prop-jets, where the turbine is designed to abstract a high proportion of the power from the combustion gases to drive a propeller which provides virtually all of the propulsive force, an example is shown in Fig. 11.5. Turbo-props are much more economical than turbo-jets at aircraft speeds below 450 mph where propellers themselves retain their efficiency. The gas turbines used in helicopters are similar in some respects where the bulk of the power is abstracted by the turbine to drive the rotors. 

NASA-Langley requested assistance from Sandia to determine the feasibility of free-piston electrical generators in providing propulsive power for aircraft. The concept is to distribute generators throughout the aircraft and utilize electric motor powered fans to propel the aircraft. 

The field of propulsion deals with the means by which aircraft, missiles, and spacecraft are propelled toward their destinations. Subjects of development include propellers and rotors driven by internal combustion engines or jet engines, rockets powered by solid- or liquid-fueled engines, spacecraft powered by ion engines, solar sails or nuclear reactors, and matter-antimatter engines. Propulsion system metrics include thrust, power, cycle efficiency, propulsion efficiency, specific impulse, and thrust-specific fuel consumption. Advances in this field have enabled hiunanity to travel across the world in a few hours, visit space and the Moon, and send probes to distant planets. 

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