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Search: Posts Made By: Grenville Fortescue
Showing results 1 to 35 of 278
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Forum: Rotorheads
21st Dec 2013, 09:07
Replies: 28
Views: 15,724
Posted By Grenville Fortescue

Billionaire in an R44? Usually their...

Billionaire in an R44?

Usually their personal insurance won't allow it.
Forum: Rotorheads
20th Dec 2013, 19:22
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

This being similar to the point I made previously...

This being similar to the point I made previously although I feel "spontaneous" may be a better adjective to describe the reaction which can occur when flying hands on but, agreed, if the failure...
Forum: Rotorheads
18th Dec 2013, 11:45
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

Do you speak of powered flight?

Do you speak of powered flight?
Forum: Rotorheads
18th Dec 2013, 11:07
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

But are we now saying that at Vmax the aircraft...

But are we now saying that at Vmax the aircraft is going to assume a nose high attitude?
Forum: Rotorheads
18th Dec 2013, 11:00
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

GipsyMagpie much obliged. Therefore I...

GipsyMagpie much obliged.

Therefore I suggest that if one is in the cruise flying manually the instinctive response will be to "level" the aircraft (ie. apply aft cyclic), followed by a reduction...
Forum: Rotorheads
18th Dec 2013, 10:41
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

Can anyone confirm what happens to "attitude" in...

Can anyone confirm what happens to "attitude" in the longitudinal axis when suffering a double engine failure while in the cruise?
Forum: Rotorheads
17th Dec 2013, 17:53
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

What is the unchecked longitudinal effect, in...

What is the unchecked longitudinal effect, in terms of pitch, on an airframe in level flight which suffers a double engine failure?
Forum: Rotorheads
17th Dec 2013, 17:35
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

Lonewolf HeliComparator understands very...

Lonewolf

HeliComparator understands very well my perspective and which I partly summarised in my original post when writing:
Forum: Rotorheads
17th Dec 2013, 16:43
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

Lonewolf I think there is an issue of...

Lonewolf

I think there is an issue of context.

In my earlier post I was surmising as to those possibilities which exist which could have accounted for why an experienced pilot might delay in...
Forum: Rotorheads
17th Dec 2013, 15:49
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

Lonewolf 50 Firstly multi-engine pilots...

Lonewolf 50

Firstly multi-engine pilots are not "idiots" in my view and, while how you arrived at such a conclusion may be fascinating for some, it holds no interest for me. The comment itself...
Forum: Rotorheads
16th Dec 2013, 22:02
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

After the AAIB Special Bulletin was released I...

After the AAIB Special Bulletin was released I stated that in order for the aircraft to meet the CAA's description of a high speed vertical impact with rotors stopped, it was likely that the aircraft...
Forum: Rotorheads
16th Dec 2013, 15:18
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

SASless, thank you for your post taking the time...

SASless, thank you for your post taking the time and effort to attempt to decypher previous comments made by Double Bogey. You are a gentleman.



I find the basis for this comparison to be...
Forum: Biz Jets, Ag Flying, GA etc.
16th Dec 2013, 09:44
Replies: 13
Views: 4,137
Posted By Grenville Fortescue

If you are really willing to do whatever it takes...

If you are really willing to do whatever it takes to move ahead then are you prepared to fly abroad (such as flying small singles in a developing country) until you gain a thousand hours? Because...
Forum: Rotorheads
16th Dec 2013, 08:42
Replies: 538
Views: 85,186
Posted By Grenville Fortescue

Double Bogey I don't see where John Dixon...

Double Bogey

I don't see where John Dixon or John Eacott are advocating the use of 60% Nr. My understanding is that John Dixon was relaying research findings.



You've just said it's a...
Forum: Rotorheads
15th Dec 2013, 20:14
Replies: 109
Views: 42,457
Posted By Grenville Fortescue

Not sure about general use drones for tasks such...

Not sure about general use drones for tasks such as commercial deliveries etc. but I believe they will end up playing a significant role in urban police operations.

My previous comments are here...
Forum: Rotorheads
14th Dec 2013, 17:44
Replies: 309
Views: 141,471
Posted By Grenville Fortescue

Cockpit ergonomics has been attentively developed...

Cockpit ergonomics has been attentively developed for the past 20 years but cabin ergonomics doesn't seem to have received quite the same attention from some manufacturers. The S92 cabin is...
Forum: Rotorheads
12th Dec 2013, 16:57
Replies: 126
Views: 189,290
Posted By Grenville Fortescue

Hmm, yes. You would be right of course if it...

Hmm, yes. You would be right of course if it wasn't for that little penchant you have for accuracy and with regard to which please note Willicopter's words/exclamations in bold.



What is...
Forum: Rotorheads
12th Dec 2013, 16:34
Replies: 126
Views: 189,290
Posted By Grenville Fortescue

Oh really? I have found the exact opposite...

Oh really?

I have found the exact opposite to be true.
Forum: Rotorheads
11th Dec 2013, 10:23
Replies: 41
Views: 75,738
Posted By Grenville Fortescue

You were querying the attitude of forum members...

You were querying the attitude of forum members towards this accident in contrast to the responses made in the wake of the Shetland crash.

Aside from the obvious, there is a chasm which separates...
Forum: Rotorheads
11th Dec 2013, 09:59
Replies: 41
Views: 75,738
Posted By Grenville Fortescue

Your query was specifically addressed towards the...

Your query was specifically addressed towards the difference in attitude (with an interest in the culpability of the pilot) between this accident and the tragic events of 23rd August.

Is it...
Forum: Rotorheads
11th Dec 2013, 09:46
Replies: 41
Views: 75,738
Posted By Grenville Fortescue

Almost as different as the disparity between...

Almost as different as the disparity between private and commercial operations!
Forum: Rotorheads
9th Dec 2013, 20:58
Replies: 2,934
Views: 2,222,107
Posted By Grenville Fortescue

:eek: Thanks for this. Also, there...

:eek:



Thanks for this. Also, there must be some amount of pitch in order to bring Nr to zero.

Based on awblain's explanation, rapid loss of Nr is possible if power is absent meaning that in...
Forum: Rotorheads
9th Dec 2013, 20:13
Replies: 2,934
Views: 2,222,107
Posted By Grenville Fortescue

TT, okay have understood you now, apologies for...

TT, okay have understood you now, apologies for not catching your drift earlier.

Yes I agree. Even a "stopped" disc would have some small rotational movement created by the upward airflow. That...
Forum: Rotorheads
9th Dec 2013, 19:41
Replies: 2,934
Views: 2,222,107
Posted By Grenville Fortescue

So is there such a setting on the EC135 which...

So is there such a setting on the EC135 which will configure the engines in such a manner so as to permit a catasprophic droop in Nr?
Forum: Rotorheads
9th Dec 2013, 19:19
Replies: 2,934
Views: 2,222,107
Posted By Grenville Fortescue

Even if the fuel supply stopped, this does not...

Even if the fuel supply stopped, this does not explain the aggressive decay in rrpm - unless the response to a double engine failure was to pull maximum pitch!

Stunning that there are some who...
Forum: Rotorheads
9th Dec 2013, 17:57
Replies: 2,934
Views: 2,222,107
Posted By Grenville Fortescue

AAIB Observations: 1. The helicopter struck...

AAIB Observations:

1. The helicopter struck the flat roof of the single story building with a high rate of descent and low/negligible forward speed.

2. At the time of the impact [..] neither...
Forum: Rotorheads
9th Dec 2013, 17:33
Replies: 2,934
Views: 2,222,107
Posted By Grenville Fortescue

No, but it does say: And which is...

No, but it does say:



And which is certainly food for thought.
Forum: Rotorheads
3rd Dec 2013, 20:30
Replies: 2,934
Views: 2,222,107
Posted By Grenville Fortescue

If this had been a reinforced concrete ceiling...

If this had been a reinforced concrete ceiling the fuselage most likely wouldn't have fallen through. If it had, the rebars would have acted like a "net" and substantially arrested the final fall.
Forum: Rotorheads
3rd Dec 2013, 11:29
Replies: 2,934
Views: 2,222,107
Posted By Grenville Fortescue

Not if there was excessive blade coning prior to...

Not if there was excessive blade coning prior to impact and not if there was minimal rrpm.
Forum: Rotorheads
2nd Dec 2013, 18:54
Replies: 109
Views: 42,457
Posted By Grenville Fortescue

I believe drones will be a part of our future. ...

I believe drones will be a part of our future.

Their capabilities will, like most technologies, constantly advance and as this occurs their proliferation will be ensured by that most influential...
Forum: Rotorheads
30th Nov 2013, 08:43
Replies: 2,934
Views: 2,222,107
Posted By Grenville Fortescue

Twins still require autorotational capability,...

Twins still require autorotational capability, fuel related issues being just one example which could affect continued powered flight but there are numerous additional scenarios which may force a...
Forum: Rotorheads
17th Nov 2013, 08:15
Replies: 2,609
Views: 876,571
Posted By Grenville Fortescue

I have mentioned previously my concern at the...

I have mentioned previously my concern at the apparent lack of procedure in the effective monitoring (and inter-crew communication) of primary flight information and which, on the surface, seems...
Forum: Rotorheads
12th Nov 2013, 09:05
Replies: 2,609
Views: 876,571
Posted By Grenville Fortescue

Unquestionably, one must pursue the development...

Unquestionably, one must pursue the development and refinement of ever-improving systems and the technology to consistently and capably deliver these but, in considering Geoffrey's 1% dilemma, I...
Forum: Rotorheads
8th Nov 2013, 21:52
Replies: 121
Views: 38,590
Posted By Grenville Fortescue

The only helicopter able to meet all of Norway's...

The only helicopter able to meet all of Norway's performance criteria was the Boeing CH-47, complete with in-flight re-fuelling capability.
Forum: Rotorheads
4th Nov 2013, 07:52
Replies: 35
Views: 7,377
Posted By Grenville Fortescue

Actually is does end, and it ends with...

Actually is does end, and it ends with skilled/disciplined crews.

On the 332 thread some are going on about better training/awareness of automated systems and understanding how they work which,...
Showing results 1 to 35 of 278
 
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