drgondog's Recent Activity

  1. drgondog rated swampyankee's post Agree in the thread Gloster Meteor vs Messerschmitt Me 262, one-vs-one dogfight.

    The most similar design to a single piston-engined fighter possible. Soviet designers were probably more conservative than American or...

    Apr 24, 2017 at 8:24 AM
  2. drgondog replied to the thread Ethan - question of Drag comparisons between 109K and P-51D.

    Not unless it so states... very few aircraft were tested that way unless trying to make comparisons with wind tunnel models. NACA did so...

    Apr 23, 2017 at 11:12 AM
  3. drgondog replied to the thread Ethan - question of Drag comparisons between 109K and P-51D.

    Tomo - I can't read German and can not comment on the value presented. For example, is it the value of the wing contribution? is it a...

    Apr 23, 2017 at 8:59 AM
  4. drgondog replied to the thread Ethan - question of Drag comparisons between 109K and P-51D.

    I agree your points swampyankee. That said, NAA conducted a series of propellerless dive tests on a P-51B up to 0.75M to compare the...

    Apr 22, 2017 at 8:29 AM
  5. drgondog rated swampyankee's post Agree in the thread Ethan - question of Drag comparisons between 109K and P-51D.

    Overall, I tend to put pretty large error bands on these values, even wind tunnel results of actual aircraft being tested. The point I...

    Apr 22, 2017 at 8:24 AM
  6. drgondog replied to the thread Ethan - question of Drag comparisons between 109K and P-51D.

    SwampYankee - as you know zero lift drag is not a single value. The P-51D-5 Performance Report tabulates data for 2x10^^6 or for a MAC...

    Apr 21, 2017 at 10:21 AM
  7. drgondog rated GregP's post Agree in the thread Ethan - question of Drag comparisons between 109K and P-51D.

    Ethan, Bf 109T's intercepting B-17s? Where? They only made 7 Bf 109T-1s and 63 Bf 109T-2 (without carrier gear). They mostly operated...

    Apr 20, 2017
  8. drgondog replied to the thread P-51D Questions for the experts on here :).

    This is an old thread that had some unanswered questions: 1. None of the ETO Mustangs used antenna wire. All used SCR 522 Command Radio...

    Apr 20, 2017
  9. drgondog liked tomo pauk's post in the thread Ethan - question of Drag comparisons between 109K and P-51D.

    If I may :) Here is what Germans reckoned about the Mustang's wing: picture; ('w' = widerstand = drag) From here: link

    Apr 20, 2017
  10. drgondog replied to the thread Ethan - question of Drag comparisons between 109K and P-51D.

    Not quite, Ethan - The P-51D wing profile drag at RN=4x10^^6 is 31% of the Total Parasite drag in level flight near top speed (CD=.0155)...

    Apr 20, 2017