New UK AICs, Helicopter Safety Related Topics.
Avoid imitations
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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
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
If the air is less dense as altitude increases, how can Servo Transparency (caused by aerodynamic control loads) be more likely? Discuss.
JJ
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
If the air is less dense as altitude increases, how can Servo Transparency (caused by aerodynamic control loads) be more likely? Discuss.
JJ
Avoid imitations
Thread Starter
Join Date: Nov 2000
Location: Wandering the FIR and cyberspace often at highly unsociable times
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Same effect as a greater mass.
I'm not so sure that's right. If weight is increased, then sure, collective pitch angle has to increase to produce the necessary lift. Accordingly, aerodynamic load increases and servo transparency can ensue.
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
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
Avoid imitations
Thread Starter
Join Date: Nov 2000
Location: Wandering the FIR and cyberspace often at highly unsociable times
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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!
...I will hopefully be getting deep into a G&T any minute.
Have fun!
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
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.