prop efficiency

См. также в других словарях:

• propaganda — /prop euh gan deuh/, n. 1. information, ideas, or rumors deliberately spread widely to help or harm a person, group, movement, institution, nation, etc. 2. the deliberate spreading of such information, rumors, etc. 3. the particular doctrines or… …   Universalium

• Propeller — A propeller is essentially a type of fan which transmits power by converting rotational motion into thrust for propulsion of a vehicle such as an aircraft, ship, or submarine through a mass such as water or air, by rotating two or more twisted… …   Wikipedia

• XF-12 Rainbow — infobox Aircraft name = XF 12 Rainbow type = Strategic reconnaissance manufacturer = Republic Aviation caption = designer = Alexander Kartveli first flight = 4 February 1946 introduced = December 1945 retired = June 1952 produced = number built …   Wikipedia

• Propfan — 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… …   Wikipedia

• United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …   Universalium

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• Scimitar propeller — A scimitar propeller is shaped like a scimitar sword, with increasing sweep along the leading edge. Typically scimitar propellers are constructed of lightweight or composite materials. The combination of light weight and efficient aerodynamics… …   Wikipedia

• Spacecraft propulsion — A remote camera captures a close up view of a Space Shuttle Main Engine during a test firing at the John C. Stennis Space Center in Hancock County, Mississippi Spacecraft propulsion is any method used to accelerate spacecraft and artificial… …   Wikipedia

• Actual Grace — • A grace that is given for the performance of salutary acts and is present and disappears with the action itself Catholic Encyclopedia. Kevin Knight. 2006. Actual Grace     Actual Grace …   Catholic encyclopedia

• Pusher configuration — An aircraft constructed with a pusher configuration has the engine mounted forward of the propeller which faces in a rearwards direction giving an appearance that the aircraft is pushed through the air. Sometimes the propeller is situated at the… …   Wikipedia

• The Dark Energy Survey — DES logo The Dark Energy Survey (DES) is a survey that aims to probe the dynamics of the expansion of the universe and the growth of large scale structure. The collaboration is composed of research institutes and universities from United… …   Wikipedia