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I guess there are those that would be happy to fly this and call it a "T-33"
http://www.hsgalleries.com/gallery04...artoonwp_1.htm But the rest of us would rather it look closer to this: http://www.richard-seaman.com/Aircra...erbirdsT33.jpg |
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A T-33 eh? And no one asked me to help design one? Well I guess he probably doesn't know about mine, it's been awhile since it's been flying.
I built a more scale like fuselage for my Kyosho T-33 wing back in 1999. I chopped off the front from the trailing edge of the wing forward, used the stock back half, and cut an entirely new fuselage from blue foam with a more scale cross section (much closer than the orginal Kyosho had, and area ruled inlet ducting. The inlets were still larger than scale, at the time we were flying with 2400 nicads and needed the thrust we could get. Several years later in 2004 I enlarged that drawing (I've been drawing with Desgncad since 1995), layed in a scale 3 view with some cross sections, and drew up a 46" long fuselage for a 90mm Midifan. I went with fiberglass this time, I made a plug and then made my own molds and layed up a fiberglass and epoxy fuselage. A couple of years ago at the request of Larry Dudeck I modified the CAD plan and made it about 36 inches long (Kyosho sized) for construction in balsa and lite-ply. I adding lots of detail to the drawing for cutting bulkheads and even a wood built up wing (I've been cutting my own foam wings for a long time, it's easier than wood). He built it and had a lot of flights, here's a link to it. I really need to build one myself so that I can make a male mold for the canopy. It still had oversized inlets which still bugs me, but I didn't want to risk making them less than 100% fsa for rear of them not having enough thrust for a hand launch (which is what Larry did). Now that lighter batteries and brushless motors are around AND after seeing Corsair Nut's success with less than 100% inlets combined with high power levels, I'd feel confident making smaller inlets. However, what CN showed me even more by sticking a 90mm fan in a jet designed originally 25 years ago for a 120mm fan (turbax), is that you can use smaller fan in airframes, you don't have to use the largest fan you can get in there. With the power we have available, you may lose a few percent of static thrust by having smaller inlets and moving less air, but the excess power is there if you set it up that way. If you're ROGing, taking off with landing gear from a hard surface, static thrust and acceleration are less critical. Now granted the jet hangar planes are smaller somewhat than most other 120mm sized glow ducted fan kits, so they're even easier to make work with a 90mm Midi. If I were to design a new T-33 now, I'd either make one the same size as my 46" for the 90mm Midifan but probably use a 70mm fan, or maybe the 75mm HW609, or I'd build it slightly larger, or I'd use use smaller inlets, probably really close to scale size (I've measured the full size airplane and have take a LOT of pictures at Chino airport. The Velocity T-33 is the same size as my midi T-33 and it uses a 70mm fan. Ok, my T-33 juices are flowing...along with my F-4 juices, my F-18 juices, and there's some caffeine in there as well!
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