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Search: Posts Made By: [email protected]
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Forum: Rotorheads
9th Apr 2018, 07:16
Replies: 230
Views: 73,294
Posted By [email protected]

Bell ringer :ok::ok::ok:

Bell ringer :ok::ok::ok:
Forum: Rotorheads
7th Apr 2018, 21:46
Replies: 230
Views: 73,294
Posted By [email protected]

Not really limitations - no limits on speed,...

Not really limitations - no limits on speed, angle of bank or AUM.

Which other manufacturer has to run a safety course for its helicopter?
Forum: Rotorheads
7th Apr 2018, 09:00
Replies: 230
Views: 73,294
Posted By [email protected]

Jeffory - you are quite correct and the last...

Jeffory - you are quite correct and the last thing we need is another civ vs mil willy-waving thread - I just responded to malabo's rather unnecessary jibe.

I quite agree that whichever route you...
Forum: Rotorheads
6th Apr 2018, 21:49
Replies: 230
Views: 73,294
Posted By [email protected]

that is a pretty pathetic remark. You paid for...

that is a pretty pathetic remark. You paid for your position - I earned mine.
Forum: Rotorheads
6th Apr 2018, 20:06
Replies: 230
Views: 73,294
Posted By [email protected]

Turbulence that significantly reduces the G below...

Turbulence that significantly reduces the G below 1 or leaves you feeling light in your seat would be a good place to start.

Not a good place to be with a Robinson rotor head.

But only the...
Forum: Rotorheads
6th Apr 2018, 17:15
Replies: 230
Views: 73,294
Posted By [email protected]

Nooby - I would hope that someone with that...

Nooby - I would hope that someone with that amount of experience could handle a Robby well but more importantly know where to avoid turbulence in the mountains and how to deal with it if encountered....
Forum: Rotorheads
6th Apr 2018, 11:26
Replies: 230
Views: 73,294
Posted By [email protected]

Watch the video on Heli henri's NZ Herald link to...

Watch the video on Heli henri's NZ Herald link to understand why mast bumping is much more dangerous in a Robbie than other 2-bladed helos!

The problem comes when you use a Robbie in turbulence...
Forum: Rotorheads
4th Apr 2018, 08:05
Replies: 230
Views: 73,294
Posted By [email protected]

that seems to be the two sides in the ongoing...

that seems to be the two sides in the ongoing debate about Robbies in a nutshell
Forum: Rotorheads
19th Dec 2016, 15:09
Replies: 230
Views: 73,294
Posted By [email protected]

If it is an issue of division of attention when...

If it is an issue of division of attention when talking to pax that might distract the pilot from accurately and smoothly flying the aircraft - then surely the same must go for speaking on the radio,...
Forum: Rotorheads
19th Dec 2016, 07:42
Replies: 230
Views: 73,294
Posted By [email protected]

Don't fly fast - don't overcontrol in turbulence...

Don't fly fast - don't overcontrol in turbulence - maybe just don't fly their helicopters:E
Forum: Rotorheads
22nd Nov 2016, 06:49
Replies: 230
Views: 73,294
Posted By [email protected]

That might have been an additional benefit John...

That might have been an additional benefit John but you would have to be in some serious turbulence to experience 2 G. I have had the CAC activate when mountain flying in very strong winds but that...
Forum: Rotorheads
21st Nov 2016, 18:54
Replies: 230
Views: 73,294
Posted By [email protected]

As we have discussed before John, the Collective...

As we have discussed before John, the Collective Acceleration Control (CAC) activated at around 2G (we used to demonstrate it in a 60 deg AoB turn) and it took off collective pitch equivalent to...
Forum: Rotorheads
21st Nov 2016, 12:45
Replies: 230
Views: 73,294
Posted By [email protected]

John, that's the problem with generalised...

John, that's the problem with generalised statements regarding helicopters - there is always one which doesn't follow the norm and something with a variable stabilator will inevitably behave...
Forum: Rotorheads
21st Nov 2016, 10:35
Replies: 230
Views: 73,294
Posted By [email protected]

AOTW - yes, exactly what I was saying only better...

AOTW - yes, exactly what I was saying only better explained:ok:

Birdy2 - I suppose the teetering angle will change as the disc flaps up/down at the front but raising and lowering the lever should...
Forum: Rotorheads
20th Nov 2016, 21:08
Replies: 230
Views: 73,294
Posted By [email protected]

An extract from Blakmax's posted link So in...

An extract from Blakmax's posted link

So in addition to the suspect head design, you have suspect blade manufacture. when the crucial parts of your helicopter are held together by glue, you have...
Forum: Rotorheads
19th Nov 2016, 15:54
Replies: 230
Views: 73,294
Posted By [email protected]

Thanks John, it's good to clarify the difference...

Thanks John, it's good to clarify the difference between the initial rotor response to collective movement and the subsequent fuselage attitude and control positions once the climb/descent has been...
Forum: Rotorheads
18th Nov 2016, 13:31
Replies: 230
Views: 73,294
Posted By [email protected]

No, in forward flight it is essentially...

No, in forward flight it is essentially flapback/forward.

If you add or reduce collective, you change the pitch by the same amount all round the disc.

In forward flight there is a difference...
Forum: Rotorheads
15th Nov 2016, 21:01
Replies: 230
Views: 73,294
Posted By [email protected]

I had a look back to 2004 at a Robbie thread...

I had a look back to 2004 at a Robbie thread where the head design was discussed at length.

A contributor called Delta 3 had done a great deal of mathematical modelling and talked about how both...
Forum: Rotorheads
15th Nov 2016, 11:31
Replies: 230
Views: 73,294
Posted By [email protected]

If you have a specific car that has a serious...

If you have a specific car that has a serious defect causing deaths then yes, you would recall it.

You have to decide if the vehicle is fit for purpose or not.

Most people killed in cars are...
Forum: Rotorheads
15th Nov 2016, 05:52
Replies: 230
Views: 73,294
Posted By [email protected]

OK:ok: It was 20 plus years ago and I can't...

OK:ok: It was 20 plus years ago and I can't remember which model of 22 it was but it was UK at not much above sea level. I didn't see the owner do a load sheet so I have no idea how heavy we...
Forum: Rotorheads
14th Nov 2016, 18:06
Replies: 230
Views: 73,294
Posted By [email protected]

Paul Cantrell - thanks, every day's a school day...

Paul Cantrell - thanks, every day's a school day on Rotorheads:ok:

aa777888 - that doesn't match what I saw of 2 of us with about 2/3 fuel struggling to get over the owners hedge without exceeding...
Forum: Rotorheads
14th Nov 2016, 07:05
Replies: 230
Views: 73,294
Posted By [email protected]

From my limited experience a Robbie doesn't have...

From my limited experience a Robbie doesn't have the power to hover OGE with 2-up and full fuel.

Sounds more likely to be engine failure, rapid Nr decay and then self-destruct mode to me.
Forum: Rotorheads
13th Nov 2016, 06:17
Replies: 230
Views: 73,294
Posted By [email protected]

It's worth noting that the NTSB report is 20...

It's worth noting that the NTSB report is 20 years old and there should be a lot more data to analyse and perhaps draw some new conclusions from.

Is it just a poor combination of head design and...
Forum: Rotorheads
11th Nov 2016, 11:03
Replies: 230
Views: 73,294
Posted By [email protected]

Not sure why you would want that information...

Not sure why you would want that information Birdy - there is no problem with control authority or cyclic response on the Robbie (quite the opposite).

The teetering range is not the same as the...
Forum: Rotorheads
8th Nov 2016, 17:32
Replies: 230
Views: 73,294
Posted By [email protected]

Perhaps it would have been more balanced to add...

Perhaps it would have been more balanced to add that pretty much any other helicopter in the world wouldn't have broken up in those conditions - might have been uncomfortable - but not fatal.
Forum: Rotorheads
8th Nov 2016, 09:45
Replies: 230
Views: 73,294
Posted By [email protected]

CY - that is an excellent article, which was...

CY - that is an excellent article, which was clearly difficult to write for the author, but it brings out valuable lessons for pilots of all levels of ability and experience.

Military FS courses...
Forum: Rotorheads
5th Nov 2016, 16:41
Replies: 230
Views: 73,294
Posted By [email protected]

It's just f888ing appalling that these guys even...

It's just f888ing appalling that these guys even have licences - do they even look at the RFM for performance before they get airborne on this sort of thing.

If this habitual exceedence of...
Forum: Rotorheads
5th Nov 2016, 09:07
Replies: 230
Views: 73,294
Posted By [email protected]

Not exactly a professional approach to aviation...

Not exactly a professional approach to aviation in those two situations - would be interesting to know just how common that sort of thing is and it puts the 49% of 'sometimes' performance exceedences...
Forum: Rotorheads
3rd Nov 2016, 06:31
Replies: 230
Views: 73,294
Posted By [email protected]

I think that's your answer Ned. Generally...

I think that's your answer Ned.

Generally people are a little conservative when admitting wrongdoing so the real figure may be much higher.
Forum: Rotorheads
2nd Nov 2016, 21:49
Replies: 230
Views: 73,294
Posted By [email protected]

Just the one line about 49% admitting that...

Just the one line about 49% admitting that performance limitations are exceeded 'sometimes' is scary enough
Forum: Rotorheads
2nd Nov 2016, 12:55
Replies: 230
Views: 73,294
Posted By [email protected]

that seems like a very defensive reponse. ...

that seems like a very defensive reponse.

The survey would seem to suggest there it is far more to worry about than Kiwi-bashing.
Forum: Rotorheads
1st Nov 2016, 08:26
Replies: 230
Views: 73,294
Posted By [email protected]

Are any other helicopters the subject of a SFAR...

Are any other helicopters the subject of a SFAR like the robbie? Do any other helicopters have such fatal vices (even when inside the flight envelope)? Are any other helicopters having unexplained...
Forum: Rotorheads
29th Oct 2016, 22:12
Replies: 230
Views: 73,294
Posted By [email protected]

Skippers - the first few pages of the report...

Skippers - the first few pages of the report Gordy links to start to give some reasons - the 'very responsive' rotor system, the unusual head design that allows the blades to flap independently and...
Forum: Rotorheads
29th Oct 2016, 08:58
Replies: 230
Views: 73,294
Posted By [email protected]

Willy - I don't think that is strictly true - the...

Willy - I don't think that is strictly true - the link you provided to the crash in Ireland states the rotor mast only fractured on impact with the ground - it is usually just the extreme flapping...
Forum: Rotorheads
28th Oct 2016, 15:40
Replies: 230
Views: 73,294
Posted By [email protected]

And the Crapinson Flimsycopter is not exactly...

And the Crapinson Flimsycopter is not exactly noted for its crashworthiness even when the rotors are still attached.
Showing results 1 to 35 of 35


 
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