I Have already posted that in my introduction Thread,
as asked in this thread here is the gyro I have built and nearly finished :
this is a tandem 246 kg, 122 hp (rotax 912 with the pagotto turbocharged kit) mechanical fuel pump (Flygas) , ,8.6 m averso rotor, 8000W lipo brushless pre rotator, 1.84m 3 saber blades prop , all built from aluminium 2017 (comparable to the 2024), absolutely zéro welded part except the exhausts, all is bolted ..
nearly finished, all is machined , I must mount the rotor, the wind screen, the stick, all the rest is done but I can't do it with the fo ckin confinement ..
I designed, machined and mounted it myself from A to Z (it is not a kit) .. keep my fingers crossed.....
nothing exceptional, just a gyro inspired, by the Center line thrust pattern of Juan de la Cierva dating back to the 30's , and by the american Dominator gyros.
the prop pushes the giro just under the center of gravity, the thrust is at the level of the center of drag of the fairing,
in the european gyros (copied everywhere) the engine thrust produces a pitch down moment to be compensated by an extra angle of attack of the rotor , or by pitching the horizontal stab 2° down (which consumes energy),
in the european gyros the changes in engine rpm modifies the attitude of the gyro, this is not the case on those American sorts of gyroplanes (not cg/center of thrust big offset)
in addition the long vertical rudder eliminates the P factor and the yaw effects of the rpm changes (like on the floridian air boats) all of this without having too give a permanent angle to the rudder (which consumes energy), and lastly this tall tail eliminates the engine torque effect so that the changes in engine rpm eliminates any rolling moments.
in addition the rotor line thrust passing behind the center of gravity when the gyro gets an updraft the nose pitches down and the gyro stays horizontal without any compensation from the pilot, in presence of a down draft the opposite effect occurs and the gyro stays horizontal without any pilot imput ( stability rules are respected)
in Zero G situations the gyro physically can't bunt over, and for this it does not need a huge 1.8 m wide Horizontal Stabilizator ( a smaller one less energy consuming is enough).
those gyros don't not exist on the french market then I had to build one.
the aluminium construction makes it possible to save 40 kilos compared to a stock gyro
bolted structure makes it possible to change a tube for cheap in case of a hard landing .. just a matter of unbolting and re-bolting the new tube, one don't depend on aviation welders and it it possible to only change the bent tube without having to change the entire structure.
independence the is on of my main concerns .. along with safety
lasty this gyro has 2 fuel tanks (85 liters in all) giving it a long endurance ( at least 4 hours) which is nice to reduce the fuel stress
I had already built a mono-seater and still fly it, this bird has absolutely no engine effects in yaw, roll, attitude .. magic
nothing invented by me, all the merits belong to Ernie Boyett and chuck beaty having designed and built the famous dominator
it is gonna be more interesting to see it fly then to see it now, at the time this is a simple cloths hang dryer in the garden of
my best friend
sorry for this too long boring bla bla bla
