Ranger Autogyro

Discussion in 'Rotorcraft' started by erkki67, Jun 13, 2019.

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  1. Jun 13, 2019 #1

    erkki67

    erkki67

    erkki67

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    43C2F137-A3EB-4BFE-8CF9-00DBF3EDF3A5.jpeg

    Im wondering if this fuselage shape could be transformed into a tractor autogyro?

    The Pitbull was a great looking bird, but disappeared unfortunately, but this critter could give an interesting base for a new gyro, no?1
     
  2. Jun 14, 2019 #2

    Victor Bravo

    Victor Bravo

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    Uh oh, Erkki just poked more than one sleeping dragon...

    Yes it could be done, and yes it's viable, but the discussion alone will slow Fritz down needlessly.
     
  3. Jun 14, 2019 #3

    Vigilant1

    Vigilant1

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    A whole line of Rangers await. A Ranger hovercraft, Ranger jon boats, Ranger cuff links. I would like Ford to make a Ranger SUV someday.
     
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  4. Jun 14, 2019 #4

    rtfm

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    I'm sure it would. One would need to engineer the mast geometry and mounts, check the tail proximity to the rotors, balance and so on. But I believe the basic fuse would be about good to go. Engine, seating, undercarriage would all be ready as is I believe...
     
  5. Jun 14, 2019 #5

    FritzW

    FritzW

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    Gyro's work by voodoo and black magic and violate all that's pure and true about aviation. ...but if you could find an off the shelf rotor head it'd be an easy way to make a cool looking one.

    EDIT: gluing on the real Ranger starts this weekend!
     
  6. Jun 14, 2019 #6

    Victor Bravo

    Victor Bravo

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    Yeah Baby... yeah!
    [​IMG]
     
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  7. Jun 14, 2019 #7

    erkki67

    erkki67

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    11916192-34D2-45DF-96E3-CD3DAB879777.jpeg

    And here we attach the Ranger beneath!

    Ah yeah, Voodoo Ranger, sounds great as a name for a Gyro Ranger :D:eek:
     
  8. Jun 14, 2019 #8

    Victor Bravo

    Victor Bravo

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    It certainly looks like it could work. The guy who was selling the Raven Redrive PSRU for the Geo metro engine (Jared or Jerod??) was working on a small tractor gyro about this size.

    A four sided narrow pyramid made from steel tube would bolt on to the fuselage section in Erkki's original Ranger fuselage section post. The two forward tubes would mount to the top of the instrument panel area, and the rear tubes wold mount to the top of the seat back, and the apex of the pyramid (rotor hub) would be above the pilot's belly button (pilot CG). Instead of one fin/rudder you would use two small square rudders at the tips of the stabilizer (for rotor clearance). The stabilizer might have to be strengthened a little for these extra loads.

    Gyros are far far higher drag than an equivalent airplane, so I am guessing you would want to have a Rotax 503 engine at a minimum, or the McCullough 72HP engine de-rated down to 60.
     
  9. Jun 14, 2019 #9

    Hot Wings

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    This could work, but then I've always been attracted to tractor gyros. A stiff pyramid will likely require a "slider" rotor head. There are a few part 103 gyros that manage to fly acceptably with 503ish Hp.
     
  10. Jun 14, 2019 #10

    erkki67

    erkki67

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    C7272BE4-60C9-4544-9748-AF862DE30E20.jpeg Hey, and what about the Verner and a Rotor on the Ranger, this is even more crazy!

    But it would have a gorgeous look.

    If it’s for the the power a single disk Wankel could be used, light in weight, and nowadays fuel and oil consumption is within an acceptable level.
    http://www.geiger-motor.de/motoren/

    The bare weight of the engine is 42lbs for 50hp.

    A running Wankel may weight the double with water oil, coolers , PSRU and and....
     
  11. Jun 14, 2019 #11

    wwalton

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    A7E2277F-2124-4301-A239-579149149429.jpeg Voodoo Ranger
     
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  12. Jun 14, 2019 #12

    bmcj

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  13. Jun 14, 2019 #13

    akwrencher

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    I was checking out the little wings last winter emailed them and plans are available. Seem like a neet design. If I ever get into gyros I would likely start there.
     
  14. Jun 15, 2019 #14

    erkki67

    erkki67

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    In terms of space saving, the gyro is not beatable.

    A Voodoo Ranger, would be unbeatable for the design, sturdiness, costs...

    What are the Rotors available in the US, off the shelf?

    In France, there is AVERSO, producing a certain range of rotorheads and blades.
     
  15. Jun 15, 2019 #15

    Jstorrshall

    Jstorrshall

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    Do not try to fly a gyro of your own design unless you are (or hire) a top-notch mechanical engineer specializing in vibrational analysis, That rotor has a huge ensemble of modes and couples to a lot of stuff you don’t normally think of.
     
  16. Jun 15, 2019 #16

    rotax618

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    It doesn’t take long for the naysayers to come out - destroyers of dreams-
    There is virtually no evidence that any of the gyro accidents have been caused by “vibration induced failures”. A factory built rotor system (head and blades) are about as safe as a fixed wing, provided that the mast design is not radical then I’m sure someone could safely convert a Ranger type fuselarge to a gyro.
     
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  17. Jun 15, 2019 #17

    Hot Wings

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    All true, but not requiring a "top-notch engineer". There are plenty of amateurs that have proven it is possible to construct and fly a safe gyroplane.
    There are some dead ones too.
    It just depends on how willing the designer is to put in the time to do the study needed. It's no different than trying to build a fixed wing from scratch. There is just as much data available to the engineer a safe gyroplane as there is fixed wing - it's just a little harder to find and a little harder to sort the old wives tails from the facts.

    IMHO it wouldn't be all that hard either. The person doing does need to understand the why of autogyros. Physics is physics. Doesn't matter if it spins, flaps or glides in a straight line.
     
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