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  1. Rowdyflyer1903!

    Suggestions for trim systems

    Thank you all for the input. I am wondering with the faster actuator, that being able to 'bump' the trim with a momentary switch is how the user is able to control the trim with some finesse. I expect the coolie hat type switch on the control stick would be mandatory. Perhaps one on the throttle...
  2. Rowdyflyer1903!

    Suggestions for trim systems

    Thank you kind sir.
  3. Rowdyflyer1903!

    Suggestions for trim systems

    A lot of designers are installing linear actuators for their trim systems. Any suggestions on these and other solutions? What is the estimation of force needed to remove stick pressures felt by the pilot in a "typical" tandem two place machine?
  4. Rowdyflyer1903!

    Wunderlich Pre-rotator Friction Wheel Assembly

    Looking to Buy Wunderlich/Calumet Friction Wheel assembly.
  5. Rowdyflyer1903!

    Alphabet soup

    My frustration at the misuse of acronyms is at an all time high. Defining/spelling out the acronym then using the acronym will help the writer with his or her misconception that your audience actually knows what the acronym means. Does this Forum have an area where these acronyms are defined...
  6. Rowdyflyer1903!

    Tandem double hang test

    So to describe an object in space, it requires a certain amount of vectors. It is clear to me the initial hang test is to establish a balance from an point at or very near the place of lift the rotor will be of influence on the fuselage. This is a good thing to do and I have read/heard and...
  7. Rowdyflyer1903!

    Tandem double hang test

    I believe that the forces involved in the stability of an object being shoved through the air have greater forces applied to that object than the forces involved in the difference in moment arm and mass from the thrust line. I feel that the measurement of a static body to find a center of mass...
  8. Rowdyflyer1903!

    Tandem double hang test

    Of course not. The fuselage is not independent of any motion from that of the wing. Forget the weightless rotor cause they fly discussion. My real question about this was the statement that the hang test from the rotor mast was done with the mast off. Then the test while balancing on the...
  9. Rowdyflyer1903!

    Tandem double hang test

    I have to disagree. If you were car engine to find the cg and the only way to do that was to suspend it by a chain hoist from two different points, you would not include the weight of the chain during one measure and not in the other. Another example would be,as in a post several years ago...
  10. Rowdyflyer1903!

    Tandem double hang test

    In flight the rotor is lifting so it’s weight is separated from the fuselage. If this logic is correct, the the weight of the rotor system from the point at which the rotor lift is applied, in relation to the weight of the fuselage, is zero. Why, then, must the rotor be installed during the...
  11. Rowdyflyer1903!

    Hang Balance VS. Flight Test Pilot of different weight

    Also http://www.md-ra.com/docs/C17HG_E.pdf
  12. Rowdyflyer1903!

    Hang Balance VS. Flight Test Pilot of different weight

    Found this handy dandy Document https://cdn.shopify.com/s/files/1/0002/3737/1457/files/Weight_and_Balance_Information.pdf
  13. Rowdyflyer1903!

    Hang Balance VS. Flight Test Pilot of different weight

    Are you referring to the F.A.A. Site : https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/media/faa-h-8083-1.pdf
  14. Rowdyflyer1903!

    Hang Balance VS. Flight Test Pilot of different weight

    When the FAA/DAR visits you for the inspection to give their approval, what kind of weight and balance data is expected? It seems a fixed wing (FW) weight and balance determination is more straight forward. What do we show? Also where would be a good place to find a good example of a Pilot...
  15. Rowdyflyer1903!

    Photography from a Gyroplane

    Ok, I can see that including the E.A.A. which is puzzling. Alrighty then. In this day and time, sometimes its nice to be invisible.
  16. Rowdyflyer1903!

    Photography from a Gyroplane

    Those who work for the government have a tendency to say no because the no means less work. The reason I inquired about this is from fear of sharing a video or an image and the possibility of that sharing as having a monetary value. It would be terrible if all of a sudden none of these...
  17. Rowdyflyer1903!

    Ground Effects on the rotor

    Its puzzling but it seems that is the case. If you look at it from a pilots point of view, we too inflight will move up and down with the air mass, for this is the reason we use the Kollsman dial to pressure compensate so we can all be on the same altitude page, so to speak.
  18. Rowdyflyer1903!

    Ground Effects on the rotor

    What a hoot. I spent the last 15 years at sea 9 weeks at a time on a geology research vessel. I brought a dinky drone on board. Now the ship was pretty big at 470 ft long but it not large enough not to be tossed by the ocean swells. It was a drill ship and you would stand and watch the drill...
  19. Rowdyflyer1903!

    Ground effect

    There is something called the "Phantom wing effect." This occurs behind the wing and is related to the Magnus effect which causes a base ball to curve. This is simply the air being influenced by the wing far beyond the confines of the wing. Are you saying the air moving over the disk is...
  20. Rowdyflyer1903!

    Ground Effects on the rotor

    ohhhh thats funny. I like the way you think.
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