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What happens to the plane
If only the rudder was used to steer without alierons?
An animation would certainly help. |
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The secondary effect of yaw is roll, so if you turn with the rudder the advancing wing in the turn creates more lift than the other one. so it rolls... does make sense to you?
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Its an excercise that I do with all of my students.
Control the airplane with rudder only or rudder and trim. |
I have some very old books about aviation, one dates back to 1911.
In the very early days, apparently it was normal to fly turns using rudder only. Banked turns were considered to be “stunts”. |
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One of my instructors would demonstrate directional control by just opening both doors of the Cessna 152 in flight and hand extending them airbrake style. It seemed to work.
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Originally Posted by Less Hair
(Post 11274303)
One of my instructors would demonstrate directional control by just opening both doors of the Cessna 152 in flight and hand extending them airbrake style. It seemed to work.
An aircraft on which I have many hours, does not show secondary roll effect of rudder. It just carries on a bit sideways. Demonstrated it a few times to the surprise of a few instructors. It is an aerobatic type with symmetrical wings but I have never managed to figure out why it is so. |
What surprise me is the number of people who thought about, and then actually did, opening a door of an airplane in flight. I would never have had the guts... :O:O:O
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Never tried to do a full roll in a real airplane with rudder only, (other than doing snap rolls, but the whole “full opposite aileron” thing negates the experiment) but I can tell you that it works just fine on RC models with only rudder and elevator controls.
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Originally Posted by iggy
(Post 11274372)
What surprise me is the number of people who thought about, and then actually did, opening a door of an airplane in flight. I would never have had the guts... :O:O:O
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Originally Posted by tcasdescend
(Post 11274289)
So it just turns 360 in the same spot?
When I used to do basic instructing demo-ing this was part of the students second lesson, cunningly enough called "Effect of Controls" It wasn't that unusual, certainly in the olden days, as 421dog mentions, to find some radio control models had no functioning ailerons or no ailerons at all..so you steered them around the sky using the rudder. |
Some of Jurca's aircraft have negative yaw roll coupling - press right leg, and it rolls left because of very little dihedral.
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Originally Posted by wiggy
(Post 11274538)
No.....the aircraft continues to progress across the ground as it turns.. exactly what happens in roll will depend on the aircraft ( ea200s comment).
When I used to do basic instructing demo-ing this was part of the students second lesson, cunningly enough called "Effect of Controls" It wasn't that unusual, certainly in the olden days, as 421dog mentions, to find some radio control models had no functioning ailerons or no ailerons at all..so you steered them around the sky using the rudder. |
Originally Posted by wiggy
(Post 11274538)
No.....the aircraft continues to progress across the ground as it turns.. exactly what happens in roll will depend on the aircraft ( ea200s comment).
When I used to do basic instructing demo-ing this was part of the students second lesson, cunningly enough called "Effect of Controls" It wasn't that unusual, certainly in the olden days, as 421dog mentions, to find some radio control models had no functioning ailerons or no ailerons at all..so you steered them around the sky using the rudder. |
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