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Need to find the True Air Speed

  1. Sep 14, 2011 #1
    1. The problem statement, all variables and given/known data
    An aircraft has IAS 200 knot at pressure altitude 25 kft. Change in Vp is +1 knot. If standard day, find the TAS.

    2. Relevant equations

    3. The attempt at a solution

    Don't know how to do this.
  2. jcsd
  3. Sep 14, 2011 #2


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    Staff: Mentor

    We probably need more info to be of any help. Can you define the problem more completely? What is meant by "Change in Vp is +1 knot."? I assume that IAS = indicated air speed, and TAS is true air speed?

    What does being at 25000 feet elevation do to change IAS so it does not match TAS?
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