An Interesting Fun Fact
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A Little Autogyro History
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Welcome and thank you for your interest in my Autogyro plans. Scratch building saves you money and my autogyros can be fabricated with ordinary shop tools and local hobby shop materials. My designs have been built and flown world wide. I am excited to see how your model turns out. Please send me pics or videos of your bird! Customer service is something I take pride in, send me your questions and if you are doing a build on a forum. I would be more than happy to check out what you guys are doing! I am on RC Groups as Sofaman NJ. Contact me if you like.
So....what is an Autogyro? Basically it is a forward moving fuselage with rotors above that free spin like a windmill. A rotary wing aircraft...must create lift. Lift is not the blade's drag from under the rotor blades. No. The rotors need an airfoil shape and must spin freely as the force of wind pushes under the rotors and their shape actually pushes the blades leading edge forward. Once the rotors get to a certain RPM, lift created lifts the autogyro lifts into the air.
You may be wondering how these crazy machines came about? In the early 1900s, vertical take off and landing was the challenge. If this could be achieved, less land would be needed for airports and runways. Also, please understand that the Autogyro was the precurser to the helicopter. Helicopters have powered rotors that lift the the aircraft into the air, but the power to lift ratio could not be achieved until after WWII. The autogyro was different, the rotors were free spinning. The negative pitch of the rotors push the blades forward and the airfoil of the rotors will create lift. As the rotors increases speed due to the aircraft moving down the runway, lift is achieved just as a stationary wing would, but the ground speed along with rotor speed is gradual.
Juan De La Cierva was the man who had great success with his autogyro as he created the first hinged rotor system. The hinges allowed the rotors to find their way as they spun, thus eliminating asymmetry of lift. You need to understand that if the rotors were mounted rigid….the spinning rotors would produce a gyroscopic rotation and the aircraft would roll and crash. But roll and crashes can also be from rotors spinning too slow and or forcing the autogyro into the air before the rotors have produced lift. If you watch the guys who think going full throttle is the answer, LOL, that is so wrong....that is how to destroy a beautiful model. Follow the simple rules.
Simple Rules to Follow
#1 Never go full throttle expecting the autogyro to fly.
#2 Pre-spin rotors by hand and let the rotors spin as you moderately accelerate. Lift will happen once the blades are at peak RPMs.
#3 Never force it in the air if rotors are not at proper RPMs.
#4 Never pull back the stick too far. That is for flaring out when landing.
In the early 1930's, airports offered full mechanical service, fuel, food and or general store. Attractive to pilots who needed to rest and fuel up. An autogyro airport theme had begun with a short runway as not much land is needed for an autogyro.These small gyro ports seemed to be the obvious cheaper way to go. Below a couple pics of some gyro ports.