A Helicopter 'Expert' speaks!
Thread Starter
Nemo Me Impune Lacessit
Joined: Jun 2004
Posts: 4,103
Likes: 5
From: Chabanais, France
A Helicopter 'Expert' speaks!
There is a poster who now calls himself Angels60, (previously ssg and trickle_451) who has suggested that Brian Abraham is an idiot but who has some very interesting theories on helicopter flight. A preview of some of his previous posts may help you form a picture, try Tech Log forum, "Is Flex/derated thrust safe" and "Would you abort after V1" followed by the rotary one, 'Which Side" http://www.pprune.org/forums/showthread.php?t=327959
Some of you may want to join in!
Some of you may want to join in!
Joined: May 2008
Posts: 54
Likes: 0
From: MarysVille
Well here I am Para...I can see your hard at work making these threads so much more educational and fullfilling...he wants to you join in because they ran out of ammo, tapped...he's mad because his cronys have turned PRN into a social gathering of misfits.....please come, I could use some intelligent discourse...
Hovering AND talking
Joined: Feb 2003
Posts: 5,711
Likes: 1
From: Propping up bars in the Lands of D H Lawrence and Bishop Bonner
A few gems 
Classics!!! What a troll!!
Cheers
Whirls
Originally Posted by Angels 60
PIC in a helo can fly on either side, depending on the which way the rotor turns.
PIC in a plane doesn't have to be left seat, especialy as a flight instructor..
PIC in a plane doesn't have to be left seat, especialy as a flight instructor..
Originally Posted by Angels 60
Look up where the PIC sits in a Robinson R44 vs a Eurocopter Astar. Get back to me and let me know if I am sitting on the wrong side.
Originally Posted by Angels 60
Helcopters. The advancing blade on the main rotor creates more lift then the retreating blade in forward flight. The pilot sits on the side of the advancing blade to counteract the roll tendancy at higher speeds.
Cheers
Whirls
Joined: Dec 2000
Posts: 1,669
Likes: 5
From: uk
Originally Posted by Angels 60
PIC in a helo can fly on either side, depending on the which way the rotor turns.
PIC in a plane doesn't have to be left seat, especialy as a flight instructor..
PIC in a helo can fly on either side, depending on the which way the rotor turns.
PIC in a plane doesn't have to be left seat, especialy as a flight instructor..
Ok, so he's nearly right. PIC in a helo can fly on either side, depending on aircraft, flight manual etc if single pilot, but rotor direction???
PIC in a plane doesn't have to be left seat. Can't see anything wrong with that statement actually.
Joined: Aug 2001
Posts: 370
Likes: 18
From: Oman
What a laugh!
Senior Pilot. It's a shame he's banned, he really was great at pseudo P of F. I'm sure he could teach us a lot more. I'd like to hear his explanation of Hooke's Joint Effect and the Conservation of Angular Momentum!
Senior Pilot. It's a shame he's banned, he really was great at pseudo P of F. I'm sure he could teach us a lot more. I'd like to hear his explanation of Hooke's Joint Effect and the Conservation of Angular Momentum!
Chief Bottle Washer
Joined: Sep 2000
Aviation Qualifications: ATPL
Posts: 7,257
Likes: 1,438
From: PPRuNe
Originally Posted by pie-eater
What a laugh!
Senior Pilot. It's a shame he's banned
Senior Pilot. It's a shame he's banned
Funny, he isn't: look at the fish he manages to catch even when they're warned
Joined: May 2000
Posts: 297
Likes: 0
From: Phuket
Angel, If you were in the right seat and you flew fast you would roll right. If you were in the left seat you would roll right. Makes no difference where you are. Some long-line dudes fly the B212 and S61 left seat so they can see the load. No big deal. Tell me, why is the MD530 flown solo from the left?
Last edited by before landing check list; 25th May 2008 at 12:07.
Joined: Aug 2003
Posts: 3,833
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From: Sale, Australia
Brian Abraham is an idiot
look at the fish he manages to catch even when they're warned
There are no limits
Joined: May 2002
Posts: 506
Likes: 2
From: Shrewsbury, England.
I think the longline dudes sit LHS (certainly in the 205 / 212) so that they can reach the collective when they are hanging out to see the load.
I am no expert having just lost my longline and bucketing virginity.
I am no expert having just lost my longline and bucketing virginity.
Joined: Oct 1999
Posts: 1,444
Likes: 21
From: Beyond the black stump!
Seems to be more experts here than ever!
In order for a single pilot to operate an approved single pilot helicopter from a seat other than the designated Pilot's station (check your Flight Manual): you will have to obtain an STC to permit that function. This of course, ensures such things such as the manual release, controls, etc, are within your control.
So in order to longline from your 206/205/212, etc; you will need one more minor item than covered here.
In order for a single pilot to operate an approved single pilot helicopter from a seat other than the designated Pilot's station (check your Flight Manual): you will have to obtain an STC to permit that function. This of course, ensures such things such as the manual release, controls, etc, are within your control.
So in order to longline from your 206/205/212, etc; you will need one more minor item than covered here.
Joined: Apr 2003
Posts: 1,635
Likes: 1
From: Vancouver, BC, Canada
Originally Posted by Angels 60
Helcopters. The advancing blade on the main rotor creates more lift then the retreating blade in forward flight. The pilot sits on the side of the advancing blade to counteract the roll tendancy at higher speeds.
Helcopters. The advancing blade on the main rotor creates more lift then the retreating blade in forward flight. The pilot sits on the side of the advancing blade to counteract the roll tendancy at higher speeds.
There is an old US patent where the rotorhead is offset slightly to the side. In addition, Sikorsky's X2 Advancing Blade Concept is related to this.
Originally Posted by Senior Pilot
Not any more he doesn't. What an idiot
Not any more he doesn't. What an idiot
Dave J
Joined: Aug 2003
Posts: 3,833
Likes: 2
From: Sale, Australia
Heeees back. tankdriver45 Is that his shoe size or IQ?
http://www.pprune.org/forums/showthr...=1#post4136511
http://www.pprune.org/forums/showthr...=1#post4136511
Joined: Jan 2008
Posts: 67
Likes: 0
From: Gloucestershire, UK
What a twit, fancy insulting all the experienced helo pilots on here with bogus physics.
On a related note, I remember reading somewhere (Wagtendonk I think) that the roll during retreating blade stall doesn't necessarily always go toward the retreating side. There's no definite reason it should as far as I can reason. Yes, there is disymmetry of lift due to advancing/retreating blades, but then gyroscopic precession takes that and turns it into a flap back.
I know gyroscopic precession isn't 'perfectly' 90 degrees so perhaps that is where the roll component is induced? I suspect there is more to it than that though. If Wagtendonk is correct then perhaps the shape of the helicopter's fuselage may have an effect on which direction it rolls?
On a related note, I remember reading somewhere (Wagtendonk I think) that the roll during retreating blade stall doesn't necessarily always go toward the retreating side. There's no definite reason it should as far as I can reason. Yes, there is disymmetry of lift due to advancing/retreating blades, but then gyroscopic precession takes that and turns it into a flap back.
I know gyroscopic precession isn't 'perfectly' 90 degrees so perhaps that is where the roll component is induced? I suspect there is more to it than that though. If Wagtendonk is correct then perhaps the shape of the helicopter's fuselage may have an effect on which direction it rolls?
Joined: Nov 2005
Posts: 118
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From: Variable
I found his posts quite entertaining. Seldom have I heard anyone display the depths of their ignorance with such total conviction. The only downside is that there are others who might believe what he says through their own inexperience. The reasoning behind some of his statements would have made the Monty Python crowd very proud of him. He certainly sounds like he believes them himself and thats scary!
