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General Information Thrust is the force that move the aircraft through the air.Thrust is generated by the propulsion system of the aircraft. There are different types of propulsion systems develop thrust in different ways, although it usually generated through some application of Newton's Third Law. Propeller is one of the propulsion system. The purpose of the propeller is to move the aircraft through the air. The propeller consist of two or more blades connected together by a hub. The hub serves to attach the blades to the engine shaft The blades are made in the shape of an airfoil like wing of an aircraft. When the engine rotates the propeller blades, the blades produce lift. This lift is called thrust and moves the aircraft forward. most aircraft have propellers that pull the aircraft through the air. These are called tractor propellers. Some aircraft have propellers that push the aircraft. These are called pusher propellers Description Leading Edge Blade Face
Blade Tip Plane of Rotation Blade Angle Blade Element The reason for placing the blade element sections at different angles is because the various sections of the blade travel at different speeds. The inner part of the blade section travels slower than the outer part near the tip of the blade. If all the elements along a blade is at the same blade angle, the relative wind will not strike the elements at the same angle of attack. This is because of the different in velocity of the blade element due to distance from the center of rotation. Relative Wind Angle of Attack Blade Path Pitch Geometric Pitch Effective Pitch Forces and stresses acting on a propeller in flight The forces acting on a propeller in flight are : The stress acting on a propeller in flight are : |
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ÇÔßÑß ßÇÈÊä ØÇÑÞ Úáì ÇÈÏÇÚß ÇáãÊæÇÕá æÇÊãäì ÐßÑ ÇáãÕÏÑ ÊÍíÇÊí æãæÏÊí mechanic |
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[QUOTE=FaHaD_7arB;831696]ãæÖæÚ Ýí ÛÇíÉ ÇáÑæÚÉ
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[QUOTE=mechanic;831794] ÇÔßÑß ßÇÈÊä ØÇÑÞ Úáì ÇÈÏÇÚß ÇáãÊæÇÕá æÇÊãäì ÐßÑ ÇáãÕÏÑ ÊÍíÇÊí æãæÏÊí mechanic ÔßÑÇð áß ÃÎí ÇáßÑíã mechanic æÃÊãäí Ãä Ãßæä ÏÃÆãÇð ÚäÏ ÍÓä Ùäßã æáß ÇáãÕÏÑ ÃÎí ÇáßÑíã æåæ ÚÈÇÑÉ Úä ÑÇÈØ ãÚ æÏí æÃÍÊÑÇãí áß https://www.thaitechnics.com/ |
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thanks for that information, my friend
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ÅÖÇÝÉ ÑÏ |
åäÏÓÉ æÕíÇäÉ ÇáØÇÆÑÇÊ Engineering & Aircraft Maintenance |
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ÇáãæÇÖíÚ ÇáãÊÔÇÈåå | ||||
ÇáãæÖæÚ | ÇáãäÊÏì | |||
ECU: ENGINE CONTROL UNIT | åäÏÓÉ æÕíÇäÉ ÇáØÇÆÑÇÊ Engineering & Aircraft Maintenance | |||
AIRCRAFT GAS TURBINE ENGINES | åäÏÓÉ æÕíÇäÉ ÇáØÇÆÑÇÊ Engineering & Aircraft Maintenance | |||
Aviation terminology | ÏÑæÓ ÎØ ÇáØíÑÇä | |||
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