Linked Questions
11 questions linked to/from What classes of aircraft require hydraulic flight controls?
18
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4
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Why does the yoke "stick" in a turning position?
As you make a turn, an airplane does not naturally straighten itself out (like a car does to some extent). Are ailerons engineered to stay in whatever position they are placed, or is this simply a ...
- 5,271
16
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3
answers
5k
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What makes the ailerons on an aerobatic airplane different than the ailerons on a non-aerobatic airplane?
I often hear a spec of the "roll-rate" when talking about aerobatic airplanes and the term "fast ailerons." What exactly does that mean, and what makes the ailerons on an aerobatic airplane different ...
- 8,392
8
votes
3
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How do airplane balance tabs (or control tabs) change the force on the pilot's controls?
According to the PHAK ch. 6 and this description regarding Ameristar 9363, one type of tab on an elevator is supposed to "decrease the pressure the pilot needs to exert on the flight controls.&...
- 83
8
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1
answer
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What is the working principle of trim tabs on the elevators?
Trim tabs are used on the tail's horizontal elevators to adjust its neutral position. What is the working principle behind this? How does this affect the sensitivity (the feel) of the pitch to the ...
user8823
11
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1
answer
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What aircraft had the first pilot-assisted controls?
This question about regulations regarding hydraulic flight controls got me thinking about the history of hydraulic or pilot-assisted controls. As aircraft get larger the control surfaces must grow ...
- 36k
0
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3
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Why don’t large aircraft (larger than ~737-size) have even partial manual-reversion capability?
Essentially all large aircraft1 have flight control surfaces powered, either directly or indirectly, by hydraulic actuators, as do most medium-sized and some small aircraft. Small- to medium-sized ...
- 28.1k
2
votes
2
answers
1k
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What is the average aerodynamic load on a control surface of a commuter-sized airplane?
I'm doing a study about aircraft hydraulic pump sizing. In order to do that, I need to know the size of a flight control actuator, then determine the maximum flow and pressure that the actuator needs.
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5
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2
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680
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What are specified rudder pedal forces?
Zeus have previously provided us with links to aviation certifications standards (e.g. FAR 23.155, FAR 23.397).
I think Far 23.155 specifies the forces to provide maximum elevator control signal. But ...
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4
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2
answers
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What are the pros and cons of sealing the gap between the wing and the aileron?
I read somewhere that sometimes gap between the wing and aileron is sealed and this is done to reduce drag. But somewhere else I read that "slotted" ailerons allows for better aileron ...
- 1,953
4
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1
answer
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Do high-speed ailerons help with the roll rate control in non-FBW?
Do inboard high-speed ailerons help with the roll control by decreasing the moment arm as a secondary benefit? As in make it harder to exceed the roll limits when at high-speed.
I know the main ...
user14897
4
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2
answers
340
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What advantage might interplane-strut mounting offer to ailerons, on the Curtiss Model F?
Glenn Curtiss's 1912-1918 Model F biplane flying boat has large ailerons on the struts between the wings, not contiguous with any other flying surface. Did this aileron position have any advantage ...
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