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  1. KC135DELTA

    "Shark" composite tandem rotax from Slovakia??

    Has anyone heard of this? It looks very promising and is flying. Úvod*-*SHARK If/when will we see it in the U.S.? I could only imagine what a blast it would be with an Io-360 :roll:
  2. KC135DELTA

    Static thrust of an IO-540??

    Does anyone know of any tables or just plain ballpark #'s of static thrust produced with different props on the IO-540 (300hp)?
  3. KC135DELTA

    Has anyone heard of the Velarus VPx?

    I ran across this very small web page completely by accident. The website is pretty poor and you have to search google for the other pages but this guy is pushing a Turboshaft driven fan as a replacement for the Pt-6 on king airs and the like. VPx Before you jump on it for being impossible, it...
  4. KC135DELTA

    Axial compressor powered aircraft

    Ok, I understand this idea is far fetched so please don't make me out to be some psychopath - humor me here. In the search for a highspeed vtol aircraft what is wrong with a faux-harrier two place VTOL aircraft powered by an axial-compressor instead of a turbofan? It operates under the same...
  5. KC135DELTA

    Can anyone explain the differences between a turboprop and piston propellor?

    Hello again, After searching high and low I can't find an answer to this. A 400hp turboprop engine and a 400hp piston engine seem to have vastly different props. Why is this? Does a turboprop have a higher output shaft speed? Torque differences? Problems with a fully feathering prop on a piston...
  6. KC135DELTA

    New cetified *low cost* small turbojet avalible

    The PBS TJ-100 is now available, certified in Poland and undergoing certification in the US. It costs $41,000 delivered and produces 247Lbs thrust at about 1:1 sfc. PBS Velká Bíteš, a.s. ... Driving units Sonex is already building a 'sub sonex" that is said to cruise at 240mph. interesting...
  7. KC135DELTA

    Single engine 300-400hp pusher

    It's been awhile but I have been running a little design through my head the past month or so. Sorry if the write up is rough, please bear with me. The basic concept is; high horsepower (300-400hp) turbo normalized water cooled single engine mated to the rear of an extremely efficient...
  8. KC135DELTA

    Simple turbo-normalising question

    When a normally aspirated airplane is turbo normalized. Can a larger than normal prop be fitted to take advantage of the increased power at altitude (thinner air)? Thanks
  9. KC135DELTA

    addressing shock cooling

    Hello, I was running a simple (by my standards) design through my head for a high performance semi-aerobatic aircraft that utilizes a turbo normalized IO-540. When conducting rapid descents from the flight levels how can shock cooling be addressed? I'm sure there is some sort of a solution...
  10. KC135DELTA

    Structural honeycomb Panels

    Hello guys, long time no talk. Would Aluminum structural honeycomb panels used over a limited true structural frame (both being load bearing) be a legit way to build a lightweight but very strong aircraft structure capable of taking high surface loads? Such as high speed turns and aerobatics...
  11. KC135DELTA

    Why is the Piaggio Avanti so efficiant?

    This airplane boggles my mind, It's ugly, sounds worse than a dieing animal yet has the largest cabin in it's class (lear 60 size). And will do 400knts on the same power as a beech craft 200 (850hp/side). Oh and it's under 12,500 pounds and is single pilot certified too. Why don't we see these...
  12. KC135DELTA

    Pressurized Fuselage design

    Hey, Does anyone out there have or know of any literature that discusses the principles of designing and building a pressurized fuse? Thanks, Drew
  13. KC135DELTA

    Carbon fiber heating tollerences

    I'm curious to know if anyone has investigated the heating and cooling tolerances of carbon fiber and what they might be. Particular repeated heating and cooling over the lifetime of the material. I noticed spaceship 1 was made of some sort of composites and lived through it's mach 3+ reentry...
  14. KC135DELTA

    High altitude - High speed aerodynamics question.

    I have a question that may be utterly stupid or not, I dont know: When say a jetliner increases in altitude, the air density decreases, which in turn decreases the drag, with the exception of wave drag. This allows high flying aircraft such as the U2 to get up into it's coffin corner where it...
  15. KC135DELTA

    Lightning strikes

    Does anybody know of any fairly simple and lightweight methods of protecting a composite aircraft from lightning strikes? thanks, drew
  16. KC135DELTA

    business prospect

    Hello again everyone, I've made posts here before about the spending of money in aviation but never the makeing of it. My idea is simple: Giving pilots who arn't millionaires or master craftsmen the ability to fly a decent distance at a decent speed with a decent cost in a certified airplane...
  17. KC135DELTA

    VERY STOL

    Are their any stol aircraft with 4 seats that can take off in about 100ft? Besides a helicopter that is. Cruise speed isn't important but we need 4 people and eventually 6 with a range of about 5-800miles. I have a feeling that I am acctually going to have to design a new plane this time.
  18. KC135DELTA

    Compair is giving away cars now, what's next?

    It looks as if someone is getting alittle desperate for orders. http://www.aerocompinc.com/ I find it quite ridiculus myself.
  19. KC135DELTA

    Runway Options?

    I live in kansas and I am planning on owning a plane (piper cheyenne 400ls). I was looking into buying some land and laying down my own runway. Until I saw the price. It would be several million dollars just to lay down a thin asphalt one that wouldn't last very long due to the fact that winters...
  20. KC135DELTA

    Not another jet project...

    I know what your thinking, not another jet wana-be project. Trust me I said the same thing to myself. "can it really be done". Allthough others may not think so, i do. I am going to try to build a high-performance sub-sonic jet. I have two options. 1. Re-engine'd L-39. I essentially buy an...
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