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    New PAL-V gyroplane Fly/Drive youtube video

    A well made video but I am missing the PAL-V. I was expecting some footage of a PAL-V if the flight school is called the PAL-V flying academy. You see a Cavalon and an MT03 but no PAL-V. -- Chris.
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    Arrow-Copter for Mission from Madison, WI to NYC

    Of course, it is a fact that gyros are less efficient as, e.g., fixed wings. However, as a way to have fun and an arial sport, that argument doesn't count for much, just as mere efficiency is a buying principle for only a minority of people when it comes to cars or motorbikes. I fly my gyro on...
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    Arrow-Copter for Mission from Madison, WI to NYC

    I own an Arrowcopter and I've flown it plenty on long cross countries in Europe. In the US I flew it from Wauchula, FL, to Baltimore. If you have any more specific questions, feel free to post them here, I'll check back. -- Chris.
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    Rotorvox C2A gyroplane flight report

    Well, it is heavy, draggy and slow as far as I can tell from the report, if you read between the lines ("...the design is currently being tuned to increase performance...") -- Chris.
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    Help needed to join the French gyro forum

    Le forum autogire semble accepter de nouveaux membres.Mais malheureusement je ne suis pas un d'entre eux. :( -- Chris.
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    Hot Air Performance as a (Cost) Consideration for Flying and Future Aircraft

    Oui tu as raison. Des données brutes sont plutôt inutiles. Désolé de t'avoir mal interprété. -- Chris.
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    Hot Air Performance as a (Cost) Consideration for Flying and Future Aircraft

    Guys, why do you post data out of context? Plucking something off the web isn't going to prove anything. If you want to believe in stable or sinking sea levels, fine, so be it. But why shroud a belief in uninterpretable data? If someone here on this forum is a climatologist, please speak up. I...
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    Hot Air Performance as a (Cost) Consideration for Flying and Future Aircraft

    Frankly, I am not so interested in this topic to devote much time to it. I just felt I should comment because you posted the Baltic Sea data without mentioning the post-glacial rebound effect, implying that these data supported lowering sea levels, which it does not. -- Chris.
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    Hot Air Performance as a (Cost) Consideration for Flying and Future Aircraft

    What would it take for you to be convinced of rising sea levels? Not that I would want to convince you, just curiosity. -- Chris.
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    Hot Air Performance as a (Cost) Consideration for Flying and Future Aircraft

    Short of devoting my days to the study of climate change, there is little else I can do but to read some papers published by experts. Since I haven't made the observations myself, nor do I posess the means to validate every claim ab initio, there is little I can do but believe them. Sure, I weed...
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    Hot Air Performance as a (Cost) Consideration for Flying and Future Aircraft

    The data clearly shows a deviation from the well established rebound effect that starts at the year 1900 and increases with time. This cannot be explained by the dynamics of the rebound effect. It tallies well with observed sea level rises in other areas of the world, where the rebound effect is...
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    New gyro planned with jump takeoff?

    I have a hydraulically actuated constant speed prop on my ArrowCopter. During runup you also check the pitch adjustment mechanism by working the prop lever a few times over its entire range. You can hear the prop adjusting from the noise it generates. The response is near instantaneous...
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    New gyro planned with jump takeoff?

    A standard hydraulic variable pitch prop ought to do it, don't you think so? The electrically actuated Ivoprop won't cut it, I agree with you there. -- Chris.
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    Hot Air Performance as a (Cost) Consideration for Flying and Future Aircraft

    I am no expert and have no ideological stamdpoint on this topic. However, the data for the Baltic Sea show a rising of sea level when corrected for the post glacial rebound effect. This, to me, is a good indication that sea levels in general are rising. I am no geologist but of course any...
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    New gyro planned with jump takeoff?

    I find it hard to believe that the new MTO pre-rotator can prespin the rotor to 320 rrpm. Without a variable pitch prop you would start skidding forward because of prop thrust and only partial load on the wheels long before reaching 320 rrpm. Also, the rotor is pitched at an autorotative AoA and...
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    Hot Air Performance as a (Cost) Consideration for Flying and Future Aircraft

    The Baltic Sea is an interesting topic because it exhibits something called the Baltic Land Uplift which needs to be taken into account when calculating sea levels. It is also termed "Post.-glacial rebound effect" and was historically used to estimate the viscosity of the earth's crust. Has the...
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    Forum struggles remain..

    #metoo ;) -- Chris.
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    Resonance...?

    As I understood it, the rudder vibrates not because of intrinsic flutter but because it is exposed to vortices shed by some upstream structure. Balancing the rudder will not help in such a situation. -- Chris.
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    912 vs 914

    I flew my MT03 solo but with baggage across the Ratton pass at an altitude above 10,000 feet (don't know density altitude but it was in summer). -- Chris.
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    New gyro planned with jump takeoff?

    I was only doing a quick and dirty ball park calculation relying simply on energy conservation which will get you the right order of magnitude. Your initial guess was a factor of 10 out of what I deemed reasonable. I would think that mine is within about a factor of 2. If you want to improve on...
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