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185. The Waiting Begins

21/07/2015

Getting the Scout into the air requires an empty, dry airfield that faces in any direction, at least two and preferably more ground crew, a test pilot, petrol, oil, a serviceable aircraft, a very light wind, no rain, daylight, and a valid Permit to Test.

Which is why test flying is a slow, laborious business, and we have to sit patiently and try not to get too frustrated.

On Sunday we had all the various factors lined up but Gene just couldn’t get away in time, and so 1264 stayed in the hangar and I drove all the way back home.

The next available window is Friday, when the forecast began to look ideal, and Dodge Bailey might have been available, but last night when I checked the weather forecast had changed from dry to soaking wet. Today it’s back to a little bit wet, and so the only thing is to keep hoping for the best and try not to imagine what it’s going to be like when we can hop in and go flying.

But it ain’t easy!

 

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From → Technical

3 Comments
  1. Errol Cavit permalink

    How many of Gene’s suggestions from the initial flights have you been able to put in place?
    So happy for you that things are progressing, however intermittently!

  2. Brian Perkins permalink

    Congratulations David! The Scout looks great in the air!
    My 35% model (G-EAGR) continues to fly well and has been very competitive at model meets. I have been playing with the wing incidences to see how the performance is effected. I have found that it flies best with 3 degrees positive incidence in the stab, 3 degrees positive incidence in the top wing and 3-1/2 degrees positive incidence in the bottom wing. This gives 3 and a bit of down thrust in the engine which results in a fairly smooth straight climb out with throttle increase without much ballooning. The strange lifting stab does nothing to help the performance, but then again, it was a 1913 design. Some German Phaltz’s actually had a reverse airfoil on the stab! After all, it is the job of the stab to hold the tail down, not lift it! I have noticed that in perfect flying trim, there appears to be up trim in the elevators. Generally, this would be an indication of nose heaviness! In this case however, I think it is just a compensation for the lifting stab.
    Just though that you would find this interesting.
    Next time I’m over to England, I’d like to see the Scout!

    All the best,

    Brian

    • Please do get in touch when you’re coming over.
      Strangely enough the Scout is currently parked alongside (and dwarfed by) a Stearman, and I noticed as I walked past that it has a lifting stab. No-one has yet explained to me what it’s for. I think at most normal speeds it’s actually pulling down; our wing is set at around +2deg relative to the stab and thrustline. Looking closely at the video the elevator appears to be pretty much neutral on take off, with the CG at 36%, so we’re quite pleased with it. Gene said the stall was a little on the sharp side, so we’re trying a bit of washout first of all. But we need the weather…
      Did you see the pictures of Andy Craddock’s 35% Scout alongside ours at Shuttleworth? He’s modelling Lanoe Hawker’s 1611, complete with offset Lewis gun. It’s looking very good.

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