Turbopro engine(1937)

JENDRASSIK DESIGNS SUITABLE ENGINES FOR SLOWER MOVING AIRCRAFT.

Turboprop engine is used to drive the aircraft propeller. there are two main parts of a tuebopro propulsion system, the core engine and the propeller.

In 1937, Hungarian engineer Gyorgy Jendrassik(1898-1954), designed and constructed a small turboprop engine. A year later he completed the larger "CS-1" engine, intending to use it on military bomber, the RMI-1 . unfortunately ,the CS-1 ran into combustion problems, keeping it from reaching its projected 1,000 horse power. The RMI was annihilated in an air raid by the united states.

In spite of its turbulent birth the turboprop engine enjoyed subsequent success . it is primarily distinguished by its namesake, the turbine driven propeller at the front. Whereas turbojet and turbofan engine generate thrust only at their rears, the trust of the turboprop engine is generated mostly by the propeller.

The turboprop engine produce motion like any gas turbine engine. Air enters the engine and is compressed by a spinning, blade covered cone called an axial compressor. Axial compressor pulls the air into a progressively smaller tube until it reaches a combustion area, where fuel injector combine fuel and high pressure air to create a powerful explosion that pushes exhaust leaves, it spins a turbine that rapidly rotates a drive shaft. The rotating drive shaft is then used to spin a gearbox, which in turn power the planes propeller.

Turboprop engine are most efficient at speeds below 500 miles(800 km) per hour and so are usually used in smaller, slower moving aircraft that land and take off frequently. In order to increase efficiency at higher speeds, many modern turboprop engine now use smaller and more numerous 

blades.

for short distance the turboprop are more fuel efficient then jets. on the longer flight the jet engine win the race