Ideal intake conditions - aircraft engine, Other Engineering

Ideal intake conditions:

For air to flow smoothly through a compressor, its velocity should be about 0.5 mach at the compressor inlet; this includes aircraft flying faster than the speed of sound. Hence intakes are designed to decelerate the free stream airflow to this condition over the range of aircraft speeds. Intakes should also convert the kinetic energy into pressure energy without undue shock or energy loss. This means that the ideal compressor inlet pressure should be the same as the total head pressure at the intake lip.

Intake Efficiency

The magnitude of the losses occurring in an intake during ram compression are measured by means of the intake efficiency. Typical optimum efficiencies of some common types of intake, at subsonic speeds assuming straight-through flow, are:

a   Turbo-jet engine Pitot 99 to 96%
Wing root 95 to 87%
Side 89 to 80%

b Turbo-prop engine Annular 82 to 74% (DART)

In cases where the direction of flow of the air is reversed within the intake, these values are reduced by about 10%.

 

Posted Date: 9/11/2012 8:31:35 AM | Location : United States







Related Discussions:- Ideal intake conditions - aircraft engine, Assignment Help, Ask Question on Ideal intake conditions - aircraft engine, Get Answer, Expert's Help, Ideal intake conditions - aircraft engine Discussions

Write discussion on Ideal intake conditions - aircraft engine
Your posts are moderated
Related Questions
Sonic airflow though divergent and convergent ducts When a flow of fluid (i.e. gas) flows at sonic speed through a convergent duct a shock wave forms at the exit area of the du

Essentially, the strategy of CFD is to replace the continuous problem domain with a discrete domain using a grid domain with a discrete domain using a grid. In a continuous doma

#questionYour search - design a trapezoidal retaining wall(assume dimensions) ,bulk density 15kN per metre cube ,coefficient of friction of 0.7,angle of internal friction 15degres

Calculate the maximum range when radar operates at 10GHz and has peak power=10 Mwatt,S/N ratio=10dB,antenna cross section=100 mm2,target cross section=10mm2.The gain of transmittin

main() { int i; i=i+2*i++; printf("%d",i); }

Expertsmind.com brings you unique solution in electrical engineering -          Ancient people kept track of time and seasons as it affected agriculture. -          Some


Engineers sometimes add chlorine to pipes to disinfect water. It is desired to achieve four logs of kill. This means that the effluent concentration of microoganisms is 10^-4 times


Special Casting Methods             1. Die casting : Die casting is a permanent mould casting techniques in which molten metal is forced in the mould cavity under a pressure