March 2009
Intermediate to advanced
704 pages
51h 20m
English
book
Aerospace Engineering e-Mega Reference
by Mike Tooley, Filippo De Florio, John Watkinson, Pini Gurfil, Howard D. Curtis, Antonio Filippone, T.H.G. Megson, Michael V. Cook, P. W. Carpenter, E. L. Houghton, David Wyatt, Lloyd R. Jenkinson, Jim Marchman
Content preview from Aerospace Engineering e-Mega Reference
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
Start your free trial
Then
L
D
max
¼
a
a
2
þ
a
2
¼
1
2
a
¼
ffiffiffi
3
p
4
c
t
¼
0:433
t=c
For a 10% thick section ðL=DÞ
max
¼ 4
1
3
at
a
¼ 6.5
Moment coefficient and k
CP
Directly from previous work, i.e. taking the moment of
d
L about the leading edge:
M ¼ C
M
1
2
r
V
2
c
2
¼
ð
c
0
4
a
ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi
M
2
1
p
x
1
2
r
V
2
dx
C
M
0
¼
2
a
ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi
M
2
1
p
(4.8.157)
and the centre of pr essure coefficient ¼(C
M
/C
L
) ¼ 0.5 as befor e. A series of results of tests on supersonic
aerofoil section s published by A. Ferri* serve to compare with the theory. The s et chosen here is for a sym-
metrical bi-convex ae rofoil section of t/c ¼ 0.1 set in an air flow of Mach number 2.13. The incidence was varied
from 10
to 28
and also plotted on th e ...