You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Since the aircraft is in steady level flight . The equation for the lift coefficient, , is given by,<br />
Substituting this equation into the drag equation,<br />
<br />
<br />
<br />
<br />
2 <br />
<br />
<br />
<br />
<br />
2<br />
Substituting in the definition of dynamic pressure, , yields<br />
<br />
2 <br />
1<br />
2 <br />
4 <br />
<br />
<br />
<br />
Numerical Substitution:<br />
It is first necessary to find the air density at sea level. From Appendix B,<br />
0.0023769 <br />
<br />
Additionally, must be represented in consistent units,<br />
200 <br />
<br />
293.3 <br />
<br />
1 <br />
5280 <br />
1 3600 <br />
Using the equation derived in the analysis, the total drag is given by,<br />
Note that,<br />
45000 <br />
<br />
0.938.5 0.0023769 <br />
293.3<br />
<br />
<br />
200 <br />
98.47<br />
· <br />
98.5 1 1<br />
·
Change language