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  1. Mike W

    Wanted to purchase: Fluid Dynamic Drag- Hoerner

    I have a copy of Hoerner's book which is looking for a good home. I will be 80 this month and can't see me designing any more aircraft. If you want to make an offer for it I will let it go. it's time to start winding down before the Kids throw everything in the skip. Postage may be a bit...
  2. Mike W

    Plank Progress

    Hi, I would be honored to be included on nestofdragons. Regards Mike
  3. Mike W

    The Plank Flies!

    The engine is 33 BHP Bull Max single cylinder 2 stroke. The propeller is 1.3 M (51 in) Dia. A wing panel weighs 55 Lb
  4. Mike W

    Facet Opel

    This video used to be the right way up but went inverted for some reason. You want MW10 Second flight which is still OK.
  5. Mike W

    The Plank Flies!

    The wings are removable and plug into the fuselage glider style. Alternatively as you say, the aircraft could be wheeled into the hanger sideways on a trolly. The wingspan is only 23 Ft. No plans to make them fold.
  6. Mike W

    The Plank Flies!

    Erkki Although not as good as a conventional aircraft, the modified rudders are more effective. I could increase the size a bit more, but i am not contemplating a major redesign at the moment. the aircraft has a sturdy main undercarriage and can stand a touch down with some side drift, like...
  7. Mike W

    Facet Opel

    Under fins. A friend built a 1/4 scale RC model of the MW9, to see if there were any nasty characteristics inherent in the design. This had fins extending above the wing and none below. Flight tests showed that at low speed with full up elevator the model developed Dutch roll, with an...
  8. Mike W

    Facet Opel

    Erkki My plank from its early days of its construction is detailed in the HBA thread. Characteristics of a straight-wing, tailless model in the Langley free-flight tunnel If you go to P7 further down is an article by AL Backstrom on basic plank design, which I found very useful. Jim Marske...
  9. Mike W

    The Plank Flies!

    MW9 Test pilots reports. Report 1 &2
  10. Mike W

    Facet Opel

    Like many of the previous posts I looked at the Opal when designing the MW9 while reading many of the posts on HBA. The many reports of people observing PIO's and from photographs, the aerofoil did not appear to have any reflex, although it was said the aerofoil was bi convex, like many others...
  11. Mike W

    Flying wing as cheap and simple option for basic fun flying.

    Not me, Too windy. The pilot was the great Eddie Clapham who has done the test flying on most of my aircraft. The LAA chief test pilot who is a professional TP also flew the aircraft. Both thought it flew well. Just a few more tweaks needed. I will add the test reports when I receive them.
  12. Mike W

    Best Bang for the Buck STOL

    Congratulations. Looks good and so well advanced. I will watch out for it
  13. Mike W

    Best Bang for the Buck STOL

    I look forward to seeing it.
  14. Mike W

    Best Bang for the Buck STOL

    I am mainly an airframe man. The engine is just a weight and thrust to me. Eddie Clapham an ex Rolls Royce engineer is the engine expert. Eddie has been test pilot on most of my designs including the present Plank aircraft. The power to weight ratio of four stroke engines is usually worst...
  15. Mike W

    Best Bang for the Buck STOL

    Thank you Matthew. HT30 TF the aluminium spec we used in the 1980's became 6082-T6. We have used all this and no stockiest has replaced it in the UK. However in America 6061-T6 is available and is satisfactory for MW aircraft. Some dealers listed 6082-T6 in their catalogs which was actually...
  16. Mike W

    Best Bang for the Buck STOL

    I have been looking at the STOL competitions on YouTube being held in the USA these days. The Chinook is very impressive. The very short TO and landing distances achieved look amazing and with the shortage of suitable flying fields available these days in the UK, such an aircraft could be...
  17. Mike W

    Flying wing as cheap and simple option for basic fun flying.

    We are about to re commence test flying, so will soon see if the modified rudders work better, otherwise fitting Casper rudders may be the easiest solution. I think the jet powered Japanese flying wing with the pilot lying on top has split elevons. as you say the mechanism to operate it could...
  18. Mike W

    Flying wing as cheap and simple option for basic fun flying.

    Erkki You could take the tractor scheme and fit a shorter nose cone and put the twin engines on arms like the Cri Cri.
  19. Mike W

    Flying wing as cheap and simple option for basic fun flying.

    Erkki Anything is possible within reason. If you shorten the nose of the tractor aircraft you may want to leave room under the engine to take your feet. By wingtip spoilers, do you mean the double flap type as on the Spirit bomber? If so it may become unstable with say Dutch roll. The MW9...
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