Search results

HomeBuiltAirplanes.com

Help Support HomeBuiltAirplanes.com:

  1. N

    Simple pusher pseudo-jet

    That's a tradeoff, definitely. It also makes the plane less sensitive to trim changes (eg, movement of fuel, or people, in the plane) Becuase of the whole lever arm thing. This is where someone needs to make engineering decisions.
  2. N

    Simple pusher pseudo-jet

    I'm not sure that's a problem. I think you might just end up with a plane that rides "nice". If I am to pick up what you're putting down, are you referencing the problem with jets, and roll coupling?
  3. N

    Making a boom, before Boom Aerospace - Messing around with breaking mach.

    Understatement of the year. *giggles*
  4. N

    Making a boom, before Boom Aerospace - Messing around with breaking mach.

    That's not home buildable. Mission: To have the coolest thing in the sky. Though, how about some real numbers: 2 hour flight duration, sustained level flight above mach 1.1. Room for a pilot and a passenger. I understand, there's a practical knot limit below flight levels, so this will...
  5. N

    New two seater jet aircraft from Sonex

    The TP100 is.. deep into the "to much power" end of things. We really need a ~100hp turboprop. Turboprops are also "not the solution" to everything. If you like to throttle things back, Turboprops aren't your friend.
  6. N

    New two seater jet aircraft from Sonex

    This is the case with many, many new products. If you stick to that logic to closely, you just won't ever release anything new. The "other way" of looking at this, is they just captured the market that refused to buy the single seat version, and the single seat people still get the plane...
  7. N

    New two seater jet aircraft from Sonex

    This is the best news ever regarding small jets. A platform that's proven to fly well. It's got the "fast" thing. Now you can share it, and or carry a real big camping kit. .................. This is good.
  8. N

    Possibility of single stroke engine.

    Still "at least" two stroke. Opposed piston engines have been built.
  9. N

    Is a half Subaru possible?

    That was in a motorcycle, wasn't it? :-)
  10. N

    What could be done to reinvent the Affordaplane to a more homogeneous project?

    Calculate the linear inches of tubing used. I don't have a copy of the plans anymore. Every 1 inch of tubing length, would lose 2x1x.125 worth of aluminum by switching sizes. Add those up, and aluminum is roughly 0.098 pounds per cubic inch. It's going to be "somewhere in the middle" between...
  11. N

    Is a half Subaru possible?

    It's been "done" But it's far from easy. when I say it's been done, water cooled blocks have been both cut down, and stretched over the years. There's V-12 GM blocks, and v4 and v6's built off of chevy v8's too. .... It's certianly not easy. VW, and Corvair are "simpler" because there's...
  12. N

    What could be done to reinvent the Affordaplane to a more homogeneous project?

    Something like 20lbs comes off the fuselage if you switch from 1/8" thick tubing to 1/16" tubing. But then you're re-doing all the math there. There's a few pounds to be found in switching out the cross bracing in the tail. You could save an entire gusset by raising the top tail tube to the...
  13. N

    What could be done to reinvent the Affordaplane to a more homogeneous project?

    I've collected the weights of a few. Honest weights. But given how many fly as ultralights, publicizing their results isn't to their advantage. Here's what I collected in 2011: Original Prototype: 265lbs With Rotax 277 Gents A-Plane: 425lbs His is 084 powered. That alone is a 125lb...
  14. N

    What could be done to reinvent the Affordaplane to a more homogeneous project?

    Nice to hear there's been a re-issue of the plans. The fact there's a "103" variant, is a good sign, and shows the designer has.. figured out some of the issues with the plane. Many of the things addressed in that update, cover the issues I had. R Gentry has an affordaplane that's 130lbs...
  15. N

    What could be done to reinvent the Affordaplane to a more homogeneous project?

    .063 wall was available ~a least~ 8 years ago, from three easily searched on the internet suppliers, when I was last seriously looking at the design. It would be neat to know if some kind of design was done there. I'm going to stop now. Last time I got involved in this kind of critique, the...
  16. N

    What could be done to reinvent the Affordaplane to a more homogeneous project?

    You seem hurt. Why are you hurt? You've decided to attack me, versus the points I made. Then you put words and intents on me, that I didn't say. Really, why are you hurt? I did my analysis of the plane some seven years ago now, I have neither the paperwork hanging around, or the inclination...
  17. N

    What could be done to reinvent the Affordaplane to a more homogeneous project?

    No, I'm not confusing the concepts. The concept is old as time. The choices made with the a-plane are poor. Yeah the texas parasol has some questionable items. But the list isn't as clear, or easy, or as long as with the affordaplane. And as noted, that wasnt' a complete list. Airbike...
  18. N

    What could be done to reinvent the Affordaplane to a more homogeneous project?

    * Tail to fuselage connection is done in the middle of a beam, loading it in bending. * Landing gear mount bends in hard landings. * Landing gear as designed has no shock absorption, leading to bending lower fuselage member * Engine mount loads the nose beam in bending * Aileron control rods...
Group Builder
Top