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Aerospace Help with Power Curves for Steady Level Flight

  1. Dec 30, 2011 #1
    Hello all, first time poster here so please go easy :)

    I have to create a set of Power curves (Power Required and Power Available vs. Velocity) for a propeller-driven Ryan Navion A aircraft at intervals of 1000m.

    My question to you is this, due to the fact that the aircraft is in steady level flight will the Power AVAILABLE curve simply be a flat line at:

    where η=propeller efficiency (0.8)
    and P=engine power variation with altitude

    ... or is it more complicated than this? When I think about it i'd assume that the power available would vary slightly with velocity but I am just not so sure. Any corrections/help/advice would be appreciated!

    Happy New Year.
  2. jcsd
  3. Jan 2, 2012 #2
    Thanks guys, really helpful
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