Hacker Senstrol

[Mike Wood]

> The position feedback on a servo, on say the elevator, does not change the elevator position as a response to the pitch rate of
> the aircraft.  The relationship of pitch rate to elevator stick position is open loop.

The feedback on a servo like elevator does not change the elevator position but it does try to maintain that fixed position regardless of what the aircraft is doing. So when pulling a half loop from the top from inverted, let's say with a fixed amount of elevator all the way round (stick back 10mm), the force on the elevator is less in the first quarter (to vertical) than the second quarter (to level flight), if the aircraft is speeding up, so the servo is automatically using more power in order to hold that fixed elevator position.

In the same way the motor control is trying to maintain a fixed position, in the case rpm, if the aircraft is speeding up.

Is there a difference?

Mike

[Stuart Mellor]

One of those discussions where its possible to agree with both sides!


I can remember when dual rates were thought of as 'cheating'......


If one looks at other sports where electronics/telemetry has made a big impact - say Formula 1 - the drivers now are virtually redundant. They could be replaced with gps  with the race controlled by the pit crew. Never agreed with it - at one time when the race started it was all in the hands of the driver - that's proper racing. Now we have the pit crew advising the driver, via a multitude of sensors, to make adjustments to the car. All perfectly legal but has all this added to spectator appeal or driver skill. No.


Can't help thinking we are heading down a similar path..... but I've no solution!

[Mike Wood]

Perhaps:

If having it results in automatically having a constant speed downline with no input from the pilot then

    it shouldn't be allowed

else

    it should be allowed ( the pilot still has to make adjustments to keep a constant speed )

I think that was what Les was saying, it still requires pilot skills.


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