Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Range Equation-Thermo Propulsion-Assignment, Exercises of Applied Thermodynamics

Prof. Kamran Mujtaba assigned this task at Mody Institute of Technology and Sciences for Thermo Propulsion course. It includes: Range, Equation, Steady-level, Propulsion, System, Efficiency, Battery, Powered, Liquid, Hydrogen, Heating, Valve

Typology: Exercises

2011/2012

Uploaded on 07/20/2012

selvi_pr43
selvi_pr43 🇮🇳

4.7

(3)

73 documents

1 / 1

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
UNIFIED ENGINEERING Fall 2003
Problem U1. (Range Equation)
a) Assuming steady-level flight and no fuel reserves, estimate the range of a B-777 using
the information given in the lecture notes (and/or on Boeing’s web page). How well does
this compare to the estimates Boeing publishes on their web page?
b) Now assuming that L/D, propulsion system efficiency and final weight are unchanged,
estimate the range of a B-777 if the same volume of liquid hydrogen were to be used
instead of Jet-A.
c) Derive an equation for the range of a battery-powered aircraft in steady-level flight.
Express the range in terms of L/D, propulsion system efficiency, battery mass and
heating value, and aircraft weight. Estimate the range of a B-777 if the fuel was taken
out and replaced with its equivalent weight in batteries.
“FUEL” Heating Value (MJ/kg) Density (kg/m3)
Jet-A 42.8 800
Liquid Hydrogen 120 70
Batteries 2.5 8000
docsity.com

Partial preview of the text

Download Range Equation-Thermo Propulsion-Assignment and more Exercises Applied Thermodynamics in PDF only on Docsity!

UNIFIED ENGINEERING Fall 2003

Problem U1. (Range Equation)

a) Assuming steady-level flight and no fuel reserves, estimate the range of a B-777 using the information given in the lecture notes (and/or on Boeing’s web page). How well does this compare to the estimates Boeing publishes on their web page?

b) Now assuming that L/D, propulsion system efficiency and final weight are unchanged, estimate the range of a B-777 if the same volume of liquid hydrogen were to be used instead of Jet-A.

c) Derive an equation for the range of a battery-powered aircraft in steady-level flight. Express the range in terms of L/D, propulsion system efficiency, battery mass and heating value, and aircraft weight. Estimate the range of a B-777 if the fuel was taken out and replaced with its equivalent weight in batteries.

“FUEL” Heating Value (MJ/kg) Density (kg/m^3 ) Jet-A 42.8 800 Liquid Hydrogen 120 70 Batteries 2.5 8000

docsity.com