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Tailspin Turtle

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About Tailspin Turtle

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  1. Thanks - also see https://tailspintopics.blogspot.com/2011/10/yankee-tractor-rocket-escape-system.html
  2. http://tailspintopics.blogspot.com/2021/06/douglas-a2d-skyshark.html
  3. I made up “snaggers’ too because I was too lazy to look up what they were actually called. The key points are that they did not have an aerodynamic purpose and were only there for a barricade engagement, not one involving the Davis barriers.
  4. ! I missed that too. Note that these were the barricade snaggers (https://tailspintopics.blogspot.com/2016/07/non-aerodynamic-wing-fences.html) on the leading edge, not the vortex generators on the top of the slats. Also it appears that they didn’t remove the one on the leading edge inboard of the slat.
  5. https://tailspintopics.blogspot.com/2011/02/super-fox.html
  6. If I read Elliott correctly for Navy/USMC airplanes, in 1942, propellers were to have four-inch orange yellow tips, both sides. In 1943, propellers of 15 feet or more in diameter were to have six inch tips. In late December 1961, that was changed to white/red/white (three/six/three inches), both sides except single engine airplanes where the back side of the blade was to be black. That was changed in September 1962, with the back side to be four-inch orange yellow if the propeller was less than 15 feet in diameter and six inches if 15 or more feet in diameter. Of course, actual implementation
  7. That second drawing (inboard profile) looks to be foreshortened, i.e. the width is not to the same scale as the height. One check is the drawing location reference marks on the perimeter of the drawing: the horizontal marks are narrower than the vertical marks but it also looks a little short and stubby. This is a common problem after only a few copies and behooves the careful to always check the height versus the length of the subject of the drawing.
  8. I should have written that it was said jokingly. Another memorable remark just before first flight was a meeting with the Rolls-Royce contingent to discuss the fact that we were running out of Speys for first flight due to foreign object damage (the first stage or so of the compressor section had aluminum blades that dinged easily). The discussion was somewhat heated until the lead Brit cleared his throat and said "I wish you Americans would stop referring to it as foreign object damage since it is clearly domestic in origin." Another was a discussion during flight test at Edwards
  9. In fact, I meant trivial in this instance to mean easy to do. There was in this case a not unusual and basically unwinnable argument between airframe and engine manufacturer as to whether the shortfall in top speed (the clapped-out USAF F-4C chase had no problem keeping up with it) was due to the drag of the former or the lack of thrust from the latter. The day we finally got to Mach 2 warranted a celebration. I don't remember McDonnell ever conceding that area ruling was adversely affected significantly by the widening of the fuselage.
  10. The story (probably apocryphal) at McDonnell (I was there at the time as a new-hire flight test engineer straight out of college) was that the Queen wanted half of the airplane to be bought from British suppliers. The F-4 cost was roughly 1/3 air frame, 1/3 engines, and 1/3 avionics. So the aft fuselage, engines, and a bit of avionics were subcontracted out. However, the engines (one of the first fan engines with an afterburner; the TF30 in the F-111B was another) were also supposed to provide more thrust and more range (the fan engine was developed for airlines for more efficient cruise). It
  11. Forgive me if this has been posted before in this excellent build article but it provides some background on the Spey changes: https://tailhooktopics.blogspot.com/2012/05/spey-powered-phantom-changes.html
  12. Note: my A3D canopies have yellowed, as did the one on my Rareplanes F3H (it’s more like brown now). I’m surprised to see that yours have not. I suggest that you use one of them to cast a mold so you can vacuform a replacement.
  13. For most of my P-80 stuff, go to to my Tailhook Topics blog and type P-80 in the search box: http://tailspintopics.blogspot.com/ Some of my P-80 stuff is in my “draft” blog: https://tailhooktopics.blogspot.com/2012/02/lockheed-p-80-shooting-star.html https://tailhooktopics.blogspot.com/2015/01/lockheed-xp-80.html
  14. The Trader had a shorter fuselage like an S2F-3 to S2F-1/2 relative to the Tracer.
  15. Some reference material: https://tailhooktopics.blogspot.com/2016/04/piasecki-hup-interior.html
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