Adverse Yaw, a Stick and Rudder Fundamental
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- Опубліковано 30 тра 2024
- Join Master CFI Jim Alsip in another episode of Hangar Talk, a video series that promotes airmanship, the use of stick and rudder. In this video, Jim talks about controlling adverse yaw. He explains how the horizontal component of lift turns an airplane when the wings are banked, and that the use of ailerons to create the bank causes adverse yaw. This video shows you what adverse yaw looks like, and explains how to control that yaw with rudder.
Your host for this video is Jim Alsip, a Master Certified Flight Instructor Emeritus. This video is one in a series of Hangar Talks that share with you some of the key points developed in Jim’s books Flying the Tailwheel Airplane, Artistry of the Great Flyer and A Pilot’s Guide to Airmanship and Aerodynamics. They can be purchased at Amazon.com. If you enjoy watching the Hangar Talk videos, and you want to learn about stick and rudder skills, you can take advantage of the resources presented on Jim’s website: dylanaviation.com. - Спорт
I enjoy the show, Jim
The tape on the windscreen is a nice visual aid to accompany Jim's talk. I noticed that the nose did climb slightly as he stabilized in the medium bank. That was due to the small amount of 'up elevator' necessary to maintain level flight. Increasing power would have negated the need for some of the back elevator. It's a nice, succinct explanation.
Finally, now i get it. Thank you. Best explanation ive ever seen.
Perfect. Thank you.
Thank you so much Sir
Wow! Thank you.
The greatest stick and rudder pilot of all time was Bob Hoover.
Fly a glider to see real adverse yaw! The longer wings cause that nose to really swing.
This video was first published in 2015. However, the questins in this video will never become old. Why? Because most pilots don't understand what a turn is. See this month's AOPA mag about turning which states that "most pilots don't know how to turn". But what is a turn? A turn is a change in direction. I can do a 360 degree turn without ever using the ailerons or rudder. How? Just do a loop.
An airplane can either do one of two things. It can either fly in a straight line or it can turn. A straight line is obvious. It's when the flight path of the airplane or glider goes in a constant direction, whether it be level or in some other direction.
A turn is a change of directiion. In other words it's a constant changing of a flightpath so that the plane is never going in the same direction for any period of time.
Aerobatic pilots know this. Glider pilots know this. Why don't private and commercial pilots know this? Some do, but most don't.
I agree with you, I learnt how to control a 3D turn in glider and not in general aviation.
Jim, you said the magic word, turn relative to the "horizon". So when a wing is in a turn relative to the horizon, are both wingtips flying at the same airspeed? Before you answer, does the "horizon" mean anything other than a point of reference? Do both wingtips fly at the same airspeed in a loop? Is a banking turn any different than a loop with respect to the "wingtips" and not the "horizon"?
I'd like your opinion. I hope it is the correct one and not just what seems obvious. This is not meant to be a test, but rather, a verification of what I personally believe. Many pilots do not agree with me, but many aerobatic pilots do. Thanks, from a fellow pilot.
daffidavit: The outside wing should actually be moving a little bit faster. The same theory as the turbine engines. Shouldn’t actually need much back elevator in a shallow bank turn.
Please explain how flying trikes seem to have no problem controlling adverse yaw without a rudder.
Walter Holland - it's because of the low aspect ratio of the wing ie: swept back. Plus the wing is flexible so the tips twist under load meaning that the tip of the wing going downwards twists upwards increasing drag, which slows the yaw.
I don't understand what you mean by holding ailerons and rudder neutral THROUGH the turn
to START a turn ....use ailerons and rudder
once a turn is started ...move ailerons and rudder back to neutral
the plane will CONTINUE to turn "on its own"
until you use the ailerons and rudder again....this time in the opposite way
to STOP the turn
I think it depends on the plane, because I usually have to apply rudder through the whole turn and sometimes I even need to apply ailerons slightly to the opposite side of the turn, to avoid the plane to keep banking
Maintaining ailerons throughout a turn will only cause the airplane to continue to roll. Achieve the bank you wish then neutralize the ailerons to stop the roll. Maintain back pressure on the stick to pull the airplane through the turn and use the rudder to maintain a coordinated turn, keeping the ball centered.
Afterburner yes, just watch Bob Hoover videos from the cabin while he does 8 point rolls from his Aero Commander. As to Ola colega it sounds like your plane is out of rig. If it is rigged properly and the airerons are flat along with the rudder, the plane should stay that way after you bring the control surfaces back to their neutral or "flat surface" position. It's as if the plane were flying straight and level, except it's in a bank. All you need is a little elevator to keep the nose from sinking below the horizon. Thus, the elevator is the sole control that needs constant input in a turn. All other control surfaces only need be neutral. Even in a loop, the elevator needs constant control, sometimes negative.
daffidavit Bob Hoover was a stick and rudder god, a magician in the cockpit. What he did with the Shrike Commander was astonishing. Energy management at its finest.
I came here for Jim Slip, is this the wrong channel?
Jim, where are you?
The music and talking at the start sounds like the speaker is rapping to the music.
lmao yeah it does
this is true but you can turn an aircraft with the rudder alone, an old rc flying buddy of mine used to demonstrate this by flying circles with the wings completely horizontal and using full rudder deflection, the reason it is possible is because he was using the adverse yaw to keep the nose towards the inside of the turn, this is contrary to what pilots are taught but in practical terms it a feasible way to turn an aircraft, I believe pilots are scared to use the rudder because they believe it can cause the plain to go into a spin but the rudder is not what causes spins, it is stalls that cause spins, if you dont get into a stall situation you can use your rudder, you would not use the rudder to turn for other reasons, the main reason is your center of gravity, using the ailerons allows you to have a feeling of sitting upright with the ball close to the center, where as using the rudder will push the ball out to the side and your body will want to lean over.
Probably technically correct but unintelligible.