u01_ps01_fall03

u01_ps01_fall03 - instead of Jet-A c Derive an equation for...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
UNIFIED ENGINEERING Fall 2003 Ian A. Waitz 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
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 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...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online