New UK AICs, Helicopter Safety Related Topics.
There are two new "Pink" AICs, (P 316/2019 and P 317/2019). Both discuss topics highly relevant to helicopter pilots and both previously discussed on this forum.
Here: NATS | AIS - Home |
From one who is no longer "young" enough to "know everything" - in aviation and in particular helicopters it pays to
"learn from the mistakes of others as you will not live long enough to make them all yourself" - Eleanor Roosevelt |
The AIC relating to Servo Transparency (Jack Stall) quotes Airbus stating that 'Density Altitude' effects the likelihood of encountering the phenomenon. The CAA AIC goes further and states 'high density altitude' indicating that the risk is greater, the higher the aircraft.
If the air is less dense as altitude increases, how can Servo Transparency (caused by aerodynamic control loads) be more likely? Discuss. JJ |
Originally Posted by jellycopter
(Post 10646863)
The AIC relating to Servo Transparency (Jack Stall) quotes Airbus stating that 'Density Altitude' effects the likelihood of encountering the phenomenon. The CAA AIC goes further and states 'high density altitude' indicating that the risk is greater, the higher the aircraft.
If the air is less dense as altitude increases, how can Servo Transparency (caused by aerodynamic control loads) be more likely? Discuss. JJ |
Same effect as a greater mass.
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Originally Posted by ShyTorque
(Post 10646964)
Same effect as a greater mass.
Stay with me for a minute; hypothetically, if the aircraft were to be climbed to an infinite altitude, i.e. into space. There would be no aerodynamic load so no servo transparency. I know retreating blade stall is exacerbated by increased density altitude, but Servo Transparency? I've yet to be convinced. JJ |
It's now Christmas Eve, my family have begun arriving with the grand kids and I'm not getting deeper into a discussion about work..
...I will hopefully be getting deep into a G&T any minute. Have fun! ;) |
Fair point! Enjoy!
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Jelly, by your logic there would also be no drag, so the chopper could fly at the speed of heat.
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Originally Posted by ShyTorque
(Post 10646775)
There are two new "Pink" AICs, (P 316/2019 and P 317/2019). Both discuss topics highly relevant to helicopter pilots and both previously discussed on this forum.
Here: NATS | AIS - Home I find it much more stimulating to follow such “it can be argued” lines of thought than the usual pontificating that takes place on such topics. |
“...flight tests data indicate that servo transparency could not be encountered if the collective is less than 50% raised.”
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