@Cameron Q’s

• what is the initial speed for landing segment? how to plot on a T/W when there is no thrust
• common load factor used for the turn? do we just do some trig on it?
  • L/W = n = 1/cos(bank angle)
  • and the rest is circular motion!

5.13.24

funny constraint diagram takes care of a couple segments

and we’re gonna start by talking about

Cruise Conditions

or Cameron said croose. We flying at constant speed, plane is in equilibrium.

$$ \begin{gather}L = W = qSc_L\\ T = D = qSc_D\end{gather} $$

where dynamic pressure $q = \frac{1}{2}\rho V^2$

Lift

from the first equation we can find

$$ \begin{gather} c_L = \frac{W}{qS} \end{gather} $$

sidenote on hysterics

Drag

$$ \begin{gather}c_D = c_{D0} + kc_L^2\end{gather} $$

there’s two components contributing to the total drag: zero-lift drag and induced drag.

• lift-induced drag, $kc_L^2$
  • where $k =\frac{1}{\pi{e}\text{AR}}$
  • Oswald’s span efficiency factor, e = 0.94 is a reasonable assumption
  • AR = 6-7 is a good aim