Thrust calculation- aeronautical engineering , Other Engineering

Assignment Help:

Thrust calculation:

The amount of thrust produced depends upon two things:-

The MASS of air which is moved rearwards in a given time, the ACCELERATION imparted to the air.It can be expressed as:-  

                                              Thrust = Mass x Acceleration

The MASS is defined as "the quantity of matter in a body".It is expressed as :-   W/g

Where:-

            W = the weight of the body (in lb's or newtons) and

            g = the gravitational constant (taken as 32 ft/sec/sec or 9.81 m/sec2 )

 

The ACCELERATION imparted to the air is the difference between its inlet and outlet velocity.If we let: - 

          V2 = the air velocity at exit (in ft/sec/sec or  9.81m/sec2 )

          V1 = the air velocity at inlet (in ft/sec/sec or 9.81m/sec2 )

                       It may be expressed as V2 - V1

 

Taking these expressions for Mass and Acceleration, the thrust produced by an engine or propeller can be calculated from the following formula:-

 

                                       THRUST = W/g( V2  - V1 )

Example 1.

The airflow through a propeller is 256 lbs/sec, Inlet velocity  0 ft/sec, outlet velocity 700 ft/sec.Thrust developed will be:

Solution:-

                     THRUST =  W/g( V2  - V1 )

                     THRUST = 256/32 x (700 - 0)

                                    = 5600 lbs

 

 


Related Discussions:- Thrust calculation- aeronautical engineering

State vectors , State Vectors  In engineering - particularly control...

State Vectors  In engineering - particularly control engineering - most systems are represented by a state vector.  - The state vector contains all of the relevant qua

Non-coplaner, ''If a non-coplaner force system is acted upon by equal and o...

''If a non-coplaner force system is acted upon by equal and opposite forces,it must be in equilibrium''.State this statement is true or false.Please,give me a reason.

Timber, seasoning of timber

seasoning of timber

Air flow control system – operation, Air flow control system – operation: ...

Air flow control system – operation: The stages of the compressor are matched to give the highest efficiency in the speed range maximum rev/min. To extend the range of smooth

Risk and return, if we are comparing the risk and return of two stocks. wha...

if we are comparing the risk and return of two stocks. what to calculate, what to analyza and what conclude

Polymers, what are the merits and demerits of free radical

what are the merits and demerits of free radical

Case Let, This case has been framed in order to test the skills in evaluati...

This case has been framed in order to test the skills in evaluating a credit request and reaching a correct decision. Perluence International is large manufacturer of petroleum and

Heat conduction problem in hollow cylinder, Heat conduction problem in holl...

Heat conduction problem in hollow cylinder There are a lot of researches for calculating the temperature field in various shapes using different boundary and initial cond

Urban stormwater, Is there anyone on your staff good with HEC-HMS software ...

Is there anyone on your staff good with HEC-HMS software for modeling rain events?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd