Have you ever wondered if airplanes propellers rotated in a specific direction? #shorts Subscribe for more amazing videos! ► bit.ly/36ik9gE Edited by: Luca Hideo Okido. For copyright matters please contact us at: legal@valnetinc.com
If you ever get a commercial pilots license for multi engine you have to study every single factor for what makes a critical engine the critical one (the left one if engines don’t counter-rotate) as well as all the factors that make your single engine minimum controlable speed go up or down lol
You are right, but what he probably meant, with a longer explanation, is that having the propellers rotate opposite to each other makes losing either engine just as difficult on the pilot. (That's why he mentioned the term "Critical engine")
The critical engine on a twin prop is an important factor. The specifications for an aircraft specify which engine is the critical engine and pilots need to know this because it requires different actions in an emergency.
The long answer is no. If you search for a video called “why are prop plane engines slightly offset to the right” it will explain. Basically for 3 separate reasons aircraft tend to pull one way or another depending on which way the prop rotates. So because there are two on a twin prop, because of the way air moves around the aircraft, losing either the left or the right may effect the craft tendency to either yaw or roll more than losing the other.
Well, to cancel out Torque roll, many aircraft used Contra rotating props or props on both the engines move the other directions, this practice is really popular in rc aviation
The only issue I have with the video is in regards to them saying that if they lose an engine that it would cause a plane to yaw. That is true. But the way they said it seems like they're saying it would be worse if both engines were turning the same direction. In the event of an engine failure it would not matter
I'm not 100% sure, but, I'm pretty sure most modern prop aircraft have counter rotating props. The main reason is saftey. If one goes out (especially on takeoff) the plane won't flip onto its back which is exactly what it will want to do.
@@bisken6547 why would it flip though? You’d spin before you’d ever flip like that. You yaw significantly more than you roll and you’d stall the rudder well before you’ll ever stall a single wing
Counter rotating props have the advantage of negating p-factor, or a twisting of the airframe from torque, causing a yawing moment. This means that when a pilot "slam throttles", the airplane would go straight without any need of rudder or aileron input. The video states that if the airplane lost one engine there would be a yawing moment, and that's true. But that is due to asymmetric thrust, not p-factor. To better simple flying. Do better.
It’s due to both. If the critical engine is lost (left engine if both engines turn clockwise) the required rudder input to overcome the asymmetric thrust is greater than if you lost the right (non-critical) engine, thus increasing your Vmc speed (speed required to still be able to control the aircraft on one engine operative). The reason the left engine is called the critical engine is due to several different factors but one of them is p-factor. Since the center of thrust on the left engine is closer to the aircraft’s CG than the right one due to p-factor, if you had a left engine failure the plane would be harder to control due to the right engine’s center of thrust being farther away from the airplane’s CG thus having a greater moment. I hope that made sense, but yeah p-factor does play a role.
