Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Choked Nozzle
Considering the formula for thrust under "choked" nozzle conditions: Thrust =(P-P0 )A + WVj /g
Where: P = Pressure P = Ambient Pressure A = Area W = Mass Flow V = Velocity
It can be seen that the thrust can be further affected by a change in the mass flow rate of air through the engine and by a change in jet velocity. An increase in mass airflow may be obtained by using water injection to cool the air and increases in jet velocity by using after-burning.
Changes in ambient pressure and temperature considerably influence the thrust of the engine. This is because of the way they affect the air density and hence the mass of air entering the engine for a given engine rotational speed.
Thrust Correction - Turbojet
To enable the performance of similar engines to be compared when operating under different climatic conditions, or at different altitudes, correction factors must be applied to the calculations to return the observed values to those which would be found under I.S.A. conditions. For example, the thrust correction for a turbo-jet engine is:
Thrust (lb) (corrected) = thrust (lb) (observed) x 30/Po • Where P0 = atmospheric pressure in inches of mercury (in Hg) (observed)
30 = I.S.A. standard sea level pressure (in Hg)
Mergers Acquisition Mergers and acquisitions involve complex accounting treatment a merger, defined as amalgamation in India, involves the absorption of the target company by the
Question: (a) Spreading the spectrum for signal transmission helps alleviate the narrow band interference problem. What is narrow band interference? State and describe 2 differ
Transfer Function Models Corresponding to each linear state space equation in the time domain with input u(t) and output y(t) is a matrix of transfer functions relating the Lap
Fuel Distribution During operation, fuel flows from the aircraft fuel tank to the fuel-pump boost-stage inlet. The pressurised fuel from the boost stage of the engine-driven fu
how thermoelecteric thermometer is contructed and how it working
Q. Explain briefly the Friction welding techniques. OR Discuss any two solid state welding methods.
FUNCTIONAL CHECKS OF CHEMICAL DE-ICING SYSTEMS: Once the correct flow rate of the fluid supply has been established the distribution of the fluid flow over the blades should be
Q. Describe the advantages and disadvantages of hot working and cold working processes. Explain the extrusion process. Ans. Advantages of hot working process
load flow analysis by fast decoupled method
Introduction Engineering Economic Analysis Definition: using a combination of quantitative and qualitative techniques to analyze economic differences among engineering design a
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd