Propeller aircraft

Metzger, F. B. (1995). An Assessment of Propeller Aircraft Noise Reduction Technology. Hampton, VA Langley Research Center, National Aeronautics and Space Administration. 

Puel cells can also convert the energy in waste gases from water treatment plants to electricity. In the future, fuel cells could be propelling aircraft, automobiles and allowing homeowners to generate electricity in their basements or backyards. 

There are other transportation applications of hydrogen fuel for fuel cells to supply electricity to railway trains, marine vessels, and aircraft, and for jet engines to propel aircraft (Airbus, 2003). If the application of hydrogen to jet engine aircraft occurs in the future, nuclear-produced hydrogen is the best suited for its supply at hub airports for its features of no C02 emission and bulk supply capability. 

Liquid propellant engines have been used for many years to propel aircraft, guided missiles, rockets, research devices, and other types of vehicles. They have provided thrust levels ranging firom a few ounces for altitude control to several hundred thousand pounds for the earth launching of vehicles. 

Prior to the development of electronic instruments such as radio, radar, and Global Positioning System (GPS), the determination of one s position was accomplished using a sextant. The sextant was able to pinpoint one s location accurately by measuring the angular distance between the horizon and a celestial object. Repeated sightings were plotted on a nautical chart. This method was suitable for ships and propeller aircraft. 

Powell, C.A. and Mixson, J. S., Review of Resent Research on Interior Noise of Propeller Aircraft, AlAA/NASA 9th Aeroacoustics Conference Paper No. 2349, Williamsburg, VA., October 15-1.7, 1984. 

Berryllium metal Nuclear applications Gyroscopes Accelerometers Inertial guidance systems Rocket propellants Aircraft brakes... 

The advent of advanced fiber-reinforced composite materials has been called the biggest technical revolution since the jet engine [1-4], This claim is very striking because the tremendous impact of the jet engine on military aircraft performance is readily apparent. The impact on commercial aviation is even more striking because the airlines stwitched from propeller-driven planes to all-jet fleets within the span of just a few years because of superior performance and lower maintenance costs. 

The area rule was one of the most important technical developments during the era of jet-propelled airplanes. Today, almost all transonic and supersonic aircraft incorporate some degree of area rule. For his work on the area rule, Whitcomb received the Collier Trophy, the highest award given in the field of aeronautics. 

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 ... 

Weick, F. E. (1930). Aircraft Propeller Design. New York McGraw-I Iill. 

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