Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

An aircraft flies at Mach 1.5 at 510o00 ft (Pa=11.0KPa,Ta=216.7 K) propelled by a simple turbojet engine. The air enters the compressor and turbine

 

An aircraft flies at Mach 1.5 at 510o00 ft (Pa=11.0KPa,Ta=216.7 K) propelled by a simple turbojet engine. The air enters the compressor and turbine at a rate of 20kg/s. (y=1.4,cp=1005J/(kgK)). a. Find the stagnation temperature and pressure into the compressor, if the inlet is effectively isentropic. b. The engine compressor has a pressure ratio of 15 with an isentropic efficiency of 85%. Find the compressor work input. c. In the combustor the velocities are low (so the stagnation and static pressure are equal) with 5% pressure drop. At turbine entry the stagnation temperature is 1400 K and the turbine has an efficiency of 89% and 65% work output from turbine is used as compressor work input. Calculate the pressure ratio of the turbine and the thermal efficiency. d. If the final propelling nozzle is isentropic, find the velocity of the jet.

Step by Step Solution

3.51 Rating (158 Votes )

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Document Format ( 2 attachments)

PDF file Icon
635deba8111f3_179989.pdf

180 KBs PDF File

Word file Icon
635deba8111f3_179989.docx

120 KBs Word File

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Thermodynamics An Engineering Approach

Authors: Yunus A. Cengel, Michael A. Boles

8th edition

73398179, 978-0073398174

More Books

Students also viewed these Mechanical Engineering questions

Question

Show that: av , ,

Answered: 1 week ago