turbine rotor blade
71Propfan — NASA / GE Unducted Fan A propfan was first defined as a small diameter, highly loaded multiple bladed variable pitch propulsor having swept blades with thin advanced airfoil sections, integrated with a nacelle contoured to retard the airflow… …
72Components of jet engines — Diagram of a typical gas turbine jet engine. Air is compressed by the fan blades as it enters the engine, and it is mixed and burned with fuel in the combustion section. The hot exhaust gases provide forward thrust and turn the turbines which… …
73Wind power in the United States — is a growing industry. In 2007, the United States was the fastest growing wind power market in the world for the third year in a row [http://www.nrel.gov/docs/fy08osti/43025.pdf Annual Report on U.S. Wind Power Installation] ] . At the end of… …
74airplane — /air playn /, n. 1. a heavier than air aircraft kept aloft by the upward thrust exerted by the passing air on its fixed wings and driven by propellers, jet propulsion, etc. 2. any similar heavier than air aircraft, as a glider or helicopter. Also …
75flight, history of — ▪ aviation Introduction development of heavier than air flying machines. Important landmarks and events along the way to the invention of the airplane include an understanding of the dynamic reaction of lifting surfaces (or wings), building… …
76Ignition system — For other uses, see Ignition system (disambiguation). An ignition system is a system for igniting a fuel air mixture. Ignition systems are well known in the field of internal combustion engines such as those used in petrol (gasoline) engines used …
77Ceiling fan — A ceiling fan is a fan, usually electrically powered, suspended from the ceiling of a room, that uses hub mounted rotating paddles to circulate air. Casablanca Fan Co. ceiling fan from the early 1980s. A ceiling fan rotates much mo …
78Compressor stall — A compressor stall is a situation of abnormal airflow resulting from a stall of the aerofoils within the compressor of a jet engine. Stall is found in dynamic compressors, particularly axial compressors, as used in jet engines and turbochargers… …
79MQ-8 Fire Scout — infobox Aircraft name = MQ 8 Fire Scout caption = An RQ 8A Fire Scout takes off at the Webster Field Annex of Naval Air Station Patuxent River in 2005. type = UAV manufacturer = Northrop Grumman designer = first flight = introduction = retired =… …
80Northrop Grumman MQ-8 Fire Scout — MQ 8 Fire Scout A US Navy MQ 8B with the BRITE Star II electro optical/infrared payload at Webster Field, NAS Patuxent River, Maryland Role …
