6
$\begingroup$

I have tried to ask this in chat and I have been invited to ask a full fledged question here.

Is it true that an old (say about between the two world wars) take-off technique, to compensate for the p-factor experienced at high throttle settings, was to put the aircraft misaligned to the runway and let the p-factor align the aircraft to the center-line?

Example: take an aircraft with a p-factor that makes it yaw to the left, the pilot would have placed the aircraft on the left side of the center-line, with the nose to the right (so, looking at the center-line).

$\endgroup$
  • 2
    $\begingroup$ Never heard of that method, but in his Taildragger Tactics book, Sparky Imerson describes how to land on a slight diagonal down the runway to help reduce crosswind component, so there's no telling how creative pilots can get when they have to. $\endgroup$ – habu Aug 25 '15 at 7:13
  • $\begingroup$ An off-center takeoff gives the pilot a better view of the runway. Airplanes back then were almost all taildraggers, and forward visibility on the ground was poor. $\endgroup$ – Peter Kämpf Mar 24 '17 at 20:04
2
$\begingroup$

Why ask in past tense? The Mü-23 motor glider has a central wheel and would need someone to hold a wingtip during take-off. Sometimes, a different technique is used: The aircraft is parked at a right angle to the (grass) runway, with the wingtip pointing into the intended take-off direction on the ground. When the pilot opens the throttle, he steps on the rudder, causing the aircraft to swerve into the desired direction and rotating into a horizontal attitude thanks to the centrifugal force.

Akaflieg München Mü-23

Akaflieg München Mü-23 (picture source)

|improve this answer|||||
$\endgroup$
  • 2
    $\begingroup$ Why I ask in past tense? From the wiki page: Number built 1 not exactly common to come across, is it? :P $\endgroup$ – Federico Aug 25 '15 at 7:23
  • $\begingroup$ @Federico: Unless you are flying from the Königsdorf airfield. $\endgroup$ – Peter Kämpf Aug 25 '15 at 8:11
  • 1
    $\begingroup$ Also, this aircraft seems to be doing it because of the single wheel, not to compensate for the p-factor. Are there examples of aircrafts/pilots doing it for p-factor related necessity? $\endgroup$ – Federico Aug 25 '15 at 8:21
  • 3
    $\begingroup$ @Federico: I admit, this is not answering your question. But p-factor is also at work when uprighting the Mü-23. $\endgroup$ – Peter Kämpf Aug 25 '15 at 10:22
  • 1
    $\begingroup$ Peter, as you mention, this does not answer the question, but it is upvoted, meaning that the system behind SE thinks that my question is answered. Could you help me having a chance of receiving an answer? $\endgroup$ – Federico Nov 8 '17 at 12:01

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.