Jun 21, 2017 · NOTAR No tail rotor: use of a ducted fan within the helicopter's body, and venting the air through the side of the tail boom to get the desired anti-torque. One big advantage is simplicity and

The MD-900 is a helicopter which seems to be quite popular with law enforcement agencies. As you can see, instead of an anti-torque tail rotor, a fan exhaust is directed out slots in the tail boom....

Sep 20, 2014 · NOTAR : NOTAR - NO TAil Rotor uses a fan inside the boom to build a high volume of low-pressure air, which exits through two slots and creates a boundary layer flow of air along the …

Oct 17, 2024 · The speed of a rotating wing, no matter if it is used in a propeller or in a rotor, is normally limited by the onset of transonic speed on its tip, speed which is linearly proportional to its …

Nov 6, 2015 · The NOTAR used a method similar to the tail rotor, by varying the thrust. In case of tandem rotors (like Chinook) , the yaw control is obtained by differential lateral cyclic.

Nov 16, 2023 · @Bianfable I didn't have a problem understanding windmilling. I just couldn't understand how it could rotate in the same direction when the wind was reversed, but not the pitch. From the …

Dec 9, 2024 · If a minute makes a 0.1% difference, it's worth $10k per medevac under that high evaluation. A custom coaxial helicopter with rotor brakes will be on the upper side of the price range, …

Aug 28, 2015 · I know that helicopters blades are like rotating wings that generate lift in the same way, but how does this make a helicopter hover? Other question; how does the tail rotor help with the …

Jul 22, 2019 · John K and Koyovis 's answers are both correct. However, as a former pilot of the UH-60 and a mechanical engineer here is a simpler version. A helicopter must be balanced. If the front is …

Sep 9, 2016 · Why do some helicopters have the tail rotor mounted high above the tailboom, whereas others have it at the end of the tail boom? Above the tailboom: Wiki Commons At the end of the …