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Search: Posts Made By: [email protected]
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Forum: Rotorheads
15th Jul 2020, 10:56
Replies: 111
Views: 15,838
Posted By [email protected]

Sycamore - Westlands ISTR. The aircraft went...

Sycamore - Westlands ISTR. The aircraft went through substantial testing with various accelerometers fitted to assess the engineering penalties for each manoeuvre and a couple of aircraft at Wallop...
Forum: Rotorheads
15th Jul 2020, 09:45
Replies: 111
Views: 15,838
Posted By [email protected]

Georg1na - not feasible with modern governed...

Georg1na - not feasible with modern governed engines but you can lower the lever on the way up and then raise it at the top to push you round. With the power of the Lynx TR, a pedal turn was the...
Forum: Rotorheads
15th Jul 2020, 09:42
Replies: 111
Views: 15,838
Posted By [email protected]

Ascend Charlie - my username comes from 7 years...

Ascend Charlie - my username comes from 7 years on exchange with the AAC at Middle Wallop - what was then known as the School of Army Aviation or SAAvn - see what I did there? I was lucky enough to...
Forum: Rotorheads
15th Jul 2020, 06:54
Replies: 111
Views: 15,838
Posted By [email protected]

Georg1na - you fly the manoeuvres in the Lynx...

Georg1na - you fly the manoeuvres in the Lynx without ASE since the gyros topple and you want maximum control response rate - the yaw channel stays in but that's it :ok:
Forum: Rotorheads
14th Jul 2020, 21:52
Replies: 111
Views: 15,838
Posted By [email protected]

Wingovers, as much fun as they are, pale into...

Wingovers, as much fun as they are, pale into insignificance beside loops, barrel rolls and back flips in a Lynx:E:ok:
Forum: Rotorheads
14th Jul 2020, 14:44
Replies: 111
Views: 15,838
Posted By [email protected]

Georg1na - thing is, if all helicopter pilots did...

Georg1na - thing is, if all helicopter pilots did as Eagle 86 and FH1100 suggest, we would have far fewer accidents and incidents to discuss on these pages. Sadly, it would seem they do not.
...
Forum: Rotorheads
13th Jul 2020, 06:28
Replies: 111
Views: 15,838
Posted By [email protected]

With you on that one AC:ok: Wingover arrival to...

With you on that one AC:ok: Wingover arrival to dispersal always worked for me:)
Forum: Rotorheads
12th Jul 2020, 16:07
Replies: 111
Views: 15,838
Posted By [email protected]

Since Agile started the thread with a question...

Since Agile started the thread with a question about which type of approach to use and when - it seems to have a been a reasonable discussion covering a number of options.

There is not really a...
Forum: Rotorheads
6th Jul 2020, 10:29
Replies: 111
Views: 15,838
Posted By [email protected]

My way of thinking...:E

My way of thinking...:E
Forum: Rotorheads
6th Jul 2020, 09:40
Replies: 111
Views: 15,838
Posted By [email protected]

Yes Agile - it is apparent groundspeed. When you...

Yes Agile - it is apparent groundspeed. When you fly in an airliner at 30,000 ft the ground doesn't seem to be moving past you very fast, even though you are doing in excess of 500Kts. Come down to 3...
Forum: Rotorheads
5th Jul 2020, 19:59
Replies: 111
Views: 15,838
Posted By [email protected]

No, I'm talking about an approach in just about...

No, I'm talking about an approach in just about any helicopter but particularly in this case light singles and around the 20 Kt IAS mark.
Forum: Rotorheads
5th Jul 2020, 13:04
Replies: 111
Views: 15,838
Posted By [email protected]

Excellent - and don't forget the transition into...

Excellent - and don't forget the transition into forward flight - nice and slow or it all happens at once - it will want to roll to the right (transverse flow) before you get to the vibration...
Forum: Rotorheads
5th Jul 2020, 12:48
Replies: 111
Views: 15,838
Posted By [email protected]

great:ok:so what is your explanation of the...

great:ok:so what is your explanation of the vibration on the approach?
Forum: Rotorheads
5th Jul 2020, 09:42
Replies: 111
Views: 15,838
Posted By [email protected]

aa777888 - another thing for you to try next time...

aa777888 - another thing for you to try next time you go flying.

Make a normal constant angle, speed reducing approach until you get to the burble/vibration and then hold the speed steady.
...
Forum: Rotorheads
4th Jul 2020, 21:03
Replies: 111
Views: 15,838
Posted By [email protected]

I'm not sure what you don't get - the ground...

I'm not sure what you don't get - the ground doesn't produce the vortex, it comes from the rotor wash reacting with the ground. The rotor vortices exist without the presence of the ground as well.
...
Forum: Rotorheads
4th Jul 2020, 15:10
Replies: 111
Views: 15,838
Posted By [email protected]

So you think the ground has a vortex???? The...

So you think the ground has a vortex????

The ground vortex in the diagrams is caused by the rotor and the point I am still trying to make is that you have to get through those vortices to get to...
Forum: Rotorheads
3rd Jul 2020, 21:36
Replies: 111
Views: 15,838
Posted By [email protected]

Still in denial aa777888?? Do you think the...

Still in denial aa777888?? Do you think the rotor vortices disappear when you are further from the ground??
Forum: Rotorheads
2nd Jul 2020, 20:26
Replies: 111
Views: 15,838
Posted By [email protected]

Semantics alert!!!! The vibration is not...

Semantics alert!!!!

The vibration is not transverse flow - it is the boundary of ETL (not incipient, not fully developed just ETL) and is due to the vortices clearly shown in the diagram. It...
Forum: Rotorheads
2nd Jul 2020, 10:17
Replies: 111
Views: 15,838
Posted By [email protected]

And now consider your previous comment about how...

And now consider your previous comment about how the vibration is transverse flow as you reduce speed on the approach.

You perhaps will agree that in the transition to forward flight, the disc...
Forum: Rotorheads
2nd Jul 2020, 08:13
Replies: 111
Views: 15,838
Posted By [email protected]

aa777888 - this is from Prouty - note where the...

aa777888 - this is from Prouty - note where the vortex is at 15 to 20 kts (ie the onset of the vibration and the boundary of ETL) and then where the vortex is when you experience transverse flow (5...
Forum: Rotorheads
2nd Jul 2020, 07:38
Replies: 111
Views: 15,838
Posted By [email protected]

Just go and try what I suggested. If you do it...

Just go and try what I suggested. If you do it smoothly you will encounter transverse flow (inflow roll) towards the advancing side with NO vibration. It is due to the difference in the inflow angles...
Forum: Rotorheads
1st Jul 2020, 12:39
Replies: 111
Views: 15,838
Posted By [email protected]

well you taught it to me:)

well you taught it to me:)
Forum: Rotorheads
1st Jul 2020, 06:30
Replies: 111
Views: 15,838
Posted By [email protected]

Agile - the nose pitch up is flapback which has...

Agile - the nose pitch up is flapback which has to be overcome with forward cyclic to continue the acceleration.

Controlling angle of descent with collective while reducing speed gradually is one...
Forum: Rotorheads
1st Jul 2020, 05:41
Replies: 111
Views: 15,838
Posted By [email protected]

Agile - if you have your lift vector tilted...

Agile - if you have your lift vector tilted backwards - a decelerative attitude - raising the collective increases that vector and slows you down as well as reducing your RoD. As you have probably...
Forum: Rotorheads
1st Jul 2020, 05:37
Replies: 111
Views: 15,838
Posted By [email protected]

aa777888 - is that the same FAA handbook that...

aa777888 - is that the same FAA handbook that called settling with power and VRS the same thing?

Go and try a transition to forward flight on a still wind day from a 15' hover - don't change the...
Forum: Rotorheads
30th Jun 2020, 21:16
Replies: 111
Views: 15,838
Posted By [email protected]

AC - I know where you are coming from but you...

AC - I know where you are coming from but you can't disregard the H-V curve just because you aren't in level flight - you are slightly better off being in a descent as the power is a bit lower but...
Forum: Rotorheads
30th Jun 2020, 07:33
Replies: 111
Views: 15,838
Posted By [email protected]

Agile - the variable speed, constant angle...

Agile - the variable speed, constant angle approach is a good teaching tool as you learn to control the angle of approach with collective. It is good for night flying, mountain flying and confined...
Showing results 1 to 27 of 27


 
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