hovering down wind
Thread Starter
Joined: Jun 2001
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From: Australia
hovering down wind
i havent much experiance but i noticed one day when it was blowing a gale that it was hard to hold the robbie strait into wind, which i was tought. i had just landed and it was buffeting about abit so i taxied over to the fuel pump and to my surprise as soon as i turned the tail into wind it was verry stable, probably used a bit more collective than into wind hover but the stability was a definit improvement.
may be the tail rotor operating in clean air was the key, is this allways the case? thoughts?
may be the tail rotor operating in clean air was the key, is this allways the case? thoughts?
Senis Semper Fidelis
Joined: Feb 2001
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From: Lancashire U K
Vorti, Hi,
You must have the Gyro Stab switched on in your Robbie, for when in the North of UK if the wind is on your tail , it always tries to tip you up, when on my final months training with my Lady CFi I was hovering into 26Knt winds, swopping ends produced the effect of being a Ballet Dancer.
LDS
My regards
You must have the Gyro Stab switched on in your Robbie, for when in the North of UK if the wind is on your tail , it always tries to tip you up, when on my final months training with my Lady CFi I was hovering into 26Knt winds, swopping ends produced the effect of being a Ballet Dancer.
LDS
My regards
PPRuNe Enigma
Joined: Feb 2001
Posts: 427
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From: Scotland
Were you close to any buildings ?
May well be that there was considerable deflection/turbulence from the surrounding buildings so the actual local wind direction was not what you may have thought from the windsock.
Hope you kept fully aware of the tail rotor whilst twirling next to the pumps
May well be that there was considerable deflection/turbulence from the surrounding buildings so the actual local wind direction was not what you may have thought from the windsock.
Hope you kept fully aware of the tail rotor whilst twirling next to the pumps
Senis Semper Fidelis
Joined: Feb 2001
Posts: 1,288
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From: Lancashire U K
Skidders,
I dont think there is any actual wind speed limit, I have been told it down to the ability of the crew, but I stand to be corrected by someone who may have the actuall book in their hand!
Still whats a Knot or two, if your there in 25, seems to me that twenty six is only one number higher!!
I dont think there is any actual wind speed limit, I have been told it down to the ability of the crew, but I stand to be corrected by someone who may have the actuall book in their hand!
Still whats a Knot or two, if your there in 25, seems to me that twenty six is only one number higher!!
Joined: Jun 1999
Posts: 216
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From: by the seaside
Before we get Lu here because someone mentioned R22 I thought I would set the 25 knot limitation out.
It requires the pilot manipulating the controls to have at least 200 hours in helicopter with at least 50 in the R22 and to have completed SFAR training.
If you have a flight instructor on board then this can cover the Limitation.
No harm done...... That was lucky
It requires the pilot manipulating the controls to have at least 200 hours in helicopter with at least 50 in the R22 and to have completed SFAR training.
If you have a flight instructor on board then this can cover the Limitation.
No harm done...... That was lucky
Joined: Aug 2000
Posts: 700
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From: 5 nM S of TNT, UK
I thought that that this 25kt limitation was due to the risk of blade sailing during start up and shut down. I seem to remember a thread here a long time ago where it was recommended that you keep the wind in your back right hip pocket to minimse this risk.
Senis Semper Fidelis
Joined: Feb 2001
Posts: 1,288
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From: Lancashire U K
Rotorbike,
Cfi was sat next to me, and it was a day when the wind was expected to get stronger but not as strong as it did, as well as being in the hover at 26Knts the power was only 16" and hovering like a dream, however decided to call it a day and land not long after, wind got up to 40knts within the next hour, so all blades were tied down. Despite having the hours, I do not like wind in excess of 20knts!!
Cfi was sat next to me, and it was a day when the wind was expected to get stronger but not as strong as it did, as well as being in the hover at 26Knts the power was only 16" and hovering like a dream, however decided to call it a day and land not long after, wind got up to 40knts within the next hour, so all blades were tied down. Despite having the hours, I do not like wind in excess of 20knts!!
Thread Starter
Joined: Jun 2001
Posts: 251
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From: Australia
there were no buidings around and i didnt turn the tail near the bouser. i also definatly had the wind direction wright!
the wind would have been close to 20-25 knots (mesured by my wet finger coldness)
thanks for info, the feller at the club comented on landing down wind, "it was just easier" i said.
must have just been the pricision and skill of the pic (me).
the wind would have been close to 20-25 knots (mesured by my wet finger coldness)
thanks for info, the feller at the club comented on landing down wind, "it was just easier" i said.
must have just been the pricision and skill of the pic (me).
Joined: Jun 1999
Posts: 216
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From: by the seaside
The wind limitations appear on the last page of the Limitations Section. It isn't numbered and has 'Issued Per FAA AD 95-26-04' on the bottom left of the page.
The full AD can be viewed here
http://www.airweb.faa.gov/Regulatory...74983fb9268625 6a4d0061449d?OpenDocument
Edited because AD link didn't work!!! And then still won't.....You'll have to cut and paste the last bit.
[ 31 August 2001: Message edited by: Rotorbike ]
[ 31 August 2001: Message edited by: Rotorbike ]
[ 31 August 2001: Message edited by: Rotorbike ]
[ 31 August 2001: Message edited by: Rotorbike ]
The full AD can be viewed here
http://www.airweb.faa.gov/Regulatory...74983fb9268625 6a4d0061449d?OpenDocument
Edited because AD link didn't work!!! And then still won't.....You'll have to cut and paste the last bit.
[ 31 August 2001: Message edited by: Rotorbike ]
[ 31 August 2001: Message edited by: Rotorbike ]
[ 31 August 2001: Message edited by: Rotorbike ]
[ 31 August 2001: Message edited by: Rotorbike ]
Joined: Jun 2000
Posts: 38
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From: UK
Nr - It's definitely in the manual - at the back of the limitations section. Your flying school should really have pointed it out to you during training, etc. etc. We won't let SFH go if they cannot comply with it and generally speaking won't let SFH lose in anything above 15kts until they have a reasonable/sensible amount of experience
Senis Semper Fidelis
Joined: Feb 2001
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From: Lancashire U K
Yesterday the 30th of Aug, I watched from airside at EGNH the Hems B105 take of down wind several times in about 2 hours, the wind was about 7/9 Knts not a lot, but boy did it take a lot of distance to gain height, but all his movements were very small and easy.
