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3

The flaperons' deflection when used als trailing edge flaps is controlled based on the landing gear handle position, the ALT FLAPS switch position, the airspeed and the mach number, but is independent of whether the aircraft is airborne or on the ground. When the landing gear handle is placed in the DN (down) position or the ALT FLAPS switch is placed in the ...


2

Normally the right engine-only (left engine failed) case requires more rudder input to correct for asymmetric thrust than the left engine-only because propeller P factor results in more rudder effectiveness when flying on the left engine (the net thrust line of the left engine, being offset to the right of the propeller disc, is closer to the rudder so the ...


1

A helicopter applying downforce through its rotors would fall faster than a rock dropped next to it. Pulling out of that manoeuvre would demand excessive lift forces. Helicopters are not stressed for high manoeuvrability in the same way that some aircraft are, as the various forces imposed on the spinning rotor blades and driveshaft bearings would demand ...


1

During an autorotation the collective is lowered to its lowest position and this decreases the angle of attack (aoa) of the rotor blades. Once the helicopter begins its descent the resulting downward and forward profile creates a positive aoa for the blades. Maintaing the correct rotor RPM ( within a very narrow rage) is crucial in arresting the descent and ...


4

Pic source Negative thrust, as in enabling the helicopter to fly upside down...but no, the aerobatic Red Bull helicopter does not perform sustained inverted flight, it does barrel rolls and loops which maintain positive n. Providing negative collective is not a design feature in helicopters. Ray Prouty briefly discusses sustained inverted flight in ...


1

Based on the included quote, this probably because of the effectiveness of rudder control on the A-4. If it's effective enough at low speed to control against a high crosswind component for takeoff or landing, it's way too much when at operational speed. That is to say, if the pilot were to apply proverse rudder in a common turn, he'd push the airplane into ...


0

Analog, as in measuring a signal like voltage of an op-amp, length of a slide rule, liters of fuel in the tank. Digital, as in: this car has four wheels, plus one in the boot. Analog electronics are the original way that control loops were constructed. They are blazingly fast, but: they drift; they are subject to external distortion like electro-magnetic ...


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