Who invented the jet engine Frank Whittle or Henri Coanda?
Who invented it first and in what year\month\date and who invented it second year\month\date (+proof :D)
the germans during WWII mate.
Henri Coanda First Jet Engine
The CoandДѓ-1910 was the first jet-propelled aircraft ever built. It was constructed by Romanian inventor Henri CoandДѓ and exhibited by him at the ...
Who Invented the World's First Jet Engine?- Part 2
Who invented the world's first jet engine for the aircraft? Four names of young European jet powered engineers before World War II.
Who Invented the World's First Jet Engine? - Part 3
Who invented the world's first jet engine for the aircraft? English engineer, Sir Frank Whittle sent Gloster E28/39 jet engines to American ...
The History of Aviation, Part 5 of 6
surrounding which country invented the jet engine, England, Germany or Italy. For my part it was Sir Frank Whittle who invented the jet engine ...
Swept Away
The technology in Rolls-Royce's '077 patent and UTC's '931 application relates to swept fan blades used on turbofan jet engines. The fan generally consists of a cascade of fan blades that are attached to, and extend radially outward from, a central rotatable hub. The fan blades rotate around the hub to provide propulsive thrust to air entering the engine by increasing the pressure and momentum of that air. A cylindrical-shaped cover, known as a casing, encloses the fan and the rest of the engine.
Shockwaves contribute to engine noise and cause inefficiencies. This technology addresses two types of shock: endwall shock and passage shock. Endwall shock arises when pressure waves reflect off the engine casing and into the air flow. Passage shock arises from the supersonic flow of air over the fan blades. UTC's '931 application notes that the leading edge of the fan blade creates passage shock upon initial contact with the air flow. Endwall shock and passage shock bear no relation to each other and, in fact, arise in different places within the fan.
To reduce shockwaves, the prior art teaches to sweep blades either rearward or forward. A blade bent toward the relative velocity vector is swept forward; a blade bent away from the relative velocity vector is swept rearward. The relative velocity vector is the magnitude and direction of the air flow that hits the leading edge of a fan blade. The relative velocity vector is a combination of axial and circumferential air flow. The axial air flow is the flow of air toward the engine as it engages air along its path during flight. The circumferential air flow is the flow of air in the direction of the rotation of the blades caused by the blades themselves.
The sweep angle measures the degree of sweep in a blade. Again, these angles may incline forward or rearward. In a forward sweep angle, the blade bends toward the relative velocity vector. In a rearward sweep angle, the blade bends away from the relative velocity vector. The sweep angle at any point on a fan blade leading edge is a function of the relative velocity vector and the leading edge shape at that point.
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