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  1. J

    Rethinking the tip jet propeller

    Thanks for the additional information. Another tip jet helo would be the jdinn. It seemed to be in production for several years.
  2. J

    Rethinking the tip jet propeller

    In the mid-50's, the USMC experimented with "Rockets on Rotors" system on their H-19s. It used hydrogen peroxide as fuel which was good for about six minutes of power. This system was fed through pipes running the entire length of the blade to small rocket j at the blade tips. A half-moon...
  3. J

    Bell V280 Valor

    The Army's new aircraft were completely too complex for the army when I was in. The idea at that time was keeping things simple. The UH-1 was fairly simple so it could be maintained in the field in combat conditions. The V-280 though faster and able to lift more that the old Huey, I really...
  4. J

    Tandem rotor gyroplane

    Sorry, I don't mean to do long periods. It is all up to my condition. Then I was just starting to do well I tried to step over my dog laying in the door to my family room when he decided to jump up. I ruptured another disk which and a rush job to the ER. Sadly, the wife hid my guns so the...
  5. J

    Tandem rotor gyroplane

    Today, I placed an order for three books on 3d printing. I like the idea of producing parts as I need them. If anyone has any thoughts let me know.
  6. J

    Tandem rotor gyroplane

    Doug, Things are moving slowly and I have to find my notes and brush off the dust. Today, I was looking at my main problem, as I remember it, the gear boxes. I've tried two types and both required many pounds of torque to turn them. This is a bad thing for gyros that depend on free wheeling...
  7. J

    Tandem rotor gyroplane

    Have you worked anymore on the Mac tandem?
  8. J

    Tandem rotor gyroplane

    sorry, I didn't mean to do or leave anyone hanging. The doctors had to correct an earlier fusion which didn't go well. I was unable to walk and it had nerve involvement which caused me to be incontinent. I am not accustom to wearing diapers or peeing in a jug. When I was able to use the...
  9. J

    Tandem rotor gyroplane

    Well folks, I'm still alive and trying to recover from my severe back injury which has kept me from doing much at all. I am sitting here reviewing my thoughts from over the last few years. I realize that I still love this tandem project and fully intend to keep it alive. In the next few days...
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