MEM425F09_6.TakeffTurn03

MEM425F09_6.TakeffTurn03 - MEM 425: Aircraft Design &...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
MEM 425: Aircraft Design & Performance ** Take-Off & Turn (chapter 6) Dr. Ajmal Yousuff Dept. MEM Drexel University
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Yousuff MEM 425 Aircraft 2 Take_off Distance Ground roll or Lift-off distance: Running length along the ground, starting from zero velocity, to gain flight speed & lift off from ground. FAA requirements: Total take_off distance = Ground roll distance + distance to clear 35’ ht. (jet civilian) 50’ ht. (all others)
Background image of page 2
Yousuff MEM 425 Aircraft 3 Force-Distance relationship This is an accelerated flight ma F (Assuming constant mass) 2 1 2 dV mV F sF ds 2 1 2 s F  (distance covered by mass, while accelerating from rest to some V , under a const. force F .)
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Yousuff MEM 425 Aircraft 4 Application to aircraft () r R W L  r : coeff. of rolling (~0.02-0.1)
Background image of page 4
Yousuff MEM 425 Aircraft 5 TO analysis In general: ( ) ( ) ( ( ) ( )) r dV m T t D t W t L t dt assume: ( ) , ( ) ; constants. T t T W t W  ( ( ) ( )) rr m T W D t L t  Integrate to get S g , with 2 2 2 ,0 11 ( ) & ( ) 22 L D L L V t SC D V t S C KC  
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Yousuff MEM 425 Aircraft 6 TO analysis - approximate Variation of forces: s g
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/17/2009 for the course MEM 425 taught by Professor Yousuff during the Spring '08 term at Drexel.

Page1 / 21

MEM425F09_6.TakeffTurn03 - MEM 425: Aircraft Design &...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online