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Search: Posts Made By: JB77UK
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Forum: Rotorheads
11th Feb 2013, 18:42
Replies: 8
Views: 2,171
Posted By JB77UK

Question R22 MR Temp Light Inoperative - legal to fly?

Hi and thank you all for any feedback.

I know the practical answer to this - "I wouldn't fly with a MR Temp light inoperative", but what is the position regarding regulations?

Firstly I would...
Forum: Rotorheads
5th Jan 2013, 19:00
Replies: 8
Views: 5,950
Posted By JB77UK

Question R22 fuse on back of firewall?

What is the purpose of the fuse located on the engine side of the firewall on the R22 - low, near gascolator. You can just about see it in this photo - at the top on the right, a vertically mounted...
Forum: Rotorheads
14th Dec 2012, 16:07
Replies: 27
Views: 6,699
Posted By JB77UK

Yeah I think we can all agree trying to fly...

Yeah I think we can all agree trying to fly 10,000' at 30C in turbulence is a very dangerous place to be in an R22 - with very tight margins of safe flight.
Forum: Rotorheads
13th Dec 2012, 21:24
Replies: 27
Views: 6,699
Posted By JB77UK

@212Man - logic...

Hey 212Man, I see what you are saying and why it may seem that way, but I let me try to explain why I still think it is right.

Firstly - lets be very clear - this is JUST talking about why the...
Forum: Rotorheads
12th Dec 2012, 18:26
Replies: 27
Views: 6,699
Posted By JB77UK

Grrr @TopEndTorque - Give us a break mate!

@TopEndTorque:

Not sure why the attitude - it was an honest and sincere question. And to be clear all I was asking was "WHY is the number 57 knots mentioned in the R22 POH as the minimum, as...
Forum: Rotorheads
10th Dec 2012, 16:58
Replies: 27
Views: 6,699
Posted By JB77UK

Thumbs up Definitive answer

Thank you all for your input. Now, side-stepping the anti/pro Robbie hijack of the thread (;)) I have been given what I think is the definitive answer to the original question (Why specifically 57...
Forum: Rotorheads
9th Dec 2012, 18:53
Replies: 27
Views: 6,699
Posted By JB77UK

Question Why no lower than 57 kts in moderate+ turbulence?

Hi all,

I understand in moderate+ turbulence we want to reduce airspeed to reduce structural loads, but why do you think in the R22 POH it states 57 kts as the absolute minimum?

R22 POH...
Forum: Rotorheads
5th Dec 2012, 20:09
Replies: 0
Views: 1,177
Posted By JB77UK

Question SFAR 73 Awareness Training Video - feedback please

Hi all,

I have been working on a project to produce free training videos for helicopter pilot students. The idea is that these videos complement, not replace ground school training. They are for...
Forum: Rotorheads
17th Nov 2012, 02:24
Replies: 60
Views: 12,477
Posted By JB77UK

Question Helicopter Lift Theory - Equal Transit, Skipping Stone & 1/2 a Venturi - all wrong...

OK so here is a frustrating situation for a new Helicopter CFI working on how to teach lift theory:

The 2012 FAA Helicopter Flying Handbook explains the creation of lift as a combination of half a...
Forum: Rotorheads
24th Oct 2012, 20:06
Replies: 4
Views: 1,838
Posted By JB77UK

Question R22 MAP drop in forward flight, no collective movement

Hi guys,

I think I know the answer to this, but I'd like some clarification from the many collective hours of experience on this forum:

On the R22, as you start your climb out, lets say you are...
Forum: Rotorheads
14th Sep 2012, 19:46
Replies: 62
Views: 11,528
Posted By JB77UK

Ambiguity

@HeliChopper:

I wish Robinson would release a draft of changes to POH to forums like this to get feedback on any ambiguity. Would save themselves a ton of emails and questions at every RSC.
Forum: Rotorheads
14th Sep 2012, 19:43
Replies: 62
Views: 11,528
Posted By JB77UK

Thumbs up @LOZZ - YES

@LOZZ: In your example, according to Robinson Safety Course this week, yes you could exceed the redline, because the hot air reduces the air density and therefore means you are pulling less BHP, the...
Forum: Rotorheads
12th Sep 2012, 22:27
Replies: 62
Views: 11,528
Posted By JB77UK

Question So we can pull the extra 1.5.... BUT

A second question arises that I don't have an answer for - what about the redline limit on the MAP gauge - can you exceed that in meeting the 1.5 additional? :confused:
Forum: Rotorheads
11th Sep 2012, 23:08
Replies: 62
Views: 11,528
Posted By JB77UK

Thumbs up Confirmed by Robinson - Yes pull extra 1.5 in Hg

A friend at the Robinson Safety Course just got confirmation from Tim Tucker (Chief Instructor at Robinson) that YES we can pull the additional 1.5 in. Hg (if it is there - see the bit in the SN-25...
Forum: Rotorheads
11th Sep 2012, 21:49
Replies: 62
Views: 11,528
Posted By JB77UK

Thumbs up Great replies

Thanks for all the great replies. I would say the consensus is that we pull an extra 1.5 over the limit on full carb heat. I have emailed Robinson for clarification.

My only other thought is the...
Forum: Rotorheads
9th Sep 2012, 21:50
Replies: 62
Views: 11,528
Posted By JB77UK

Question Robinson Safety Notice SN-25 (carb ice) - additional 1.5 in. HG MAP?

Robinson just released updates to the R22 and R44 POH, main points of interest being changes to the clutch light emergency procedure (now 10 seconds and land as soon as practical unless other...
Forum: Rotorheads
6th Oct 2011, 16:11
Replies: 4
Views: 3,098
Posted By JB77UK

Thank you guys. So basically LDmax doesn't...

Thank you guys.

So basically LDmax doesn't really apply to helicopters as a whole as you cannot isolate the individual blade AoA and airspeed for a given helicopter airspeed?

And you can't say...
Forum: Rotorheads
3rd Oct 2011, 00:43
Replies: 4
Views: 3,098
Posted By JB77UK

Question LDmax in helicopters

In airplanes LDmax (best lift to drag ratio) is the point where the wing's angle of attack is at a 'sweet spot' where it provides the most lift to drag. In an airplane that translates into the best...
Showing results 1 to 18 of 18


 
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