Helmets - Should you? and Which?
Join Date: Jun 2012
Location: UK
Age: 64
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
Using my helmet in a R22 or R44 is kind of a problem, as the low RRPM warning horn gets so muffled by the sound isolation of the helmet, that it's hardly noticeable. Therefore I prefer not to use a helmet on these aircrafts as I worry I won't hear the horn in a low RRPM situation. Is there any solution to it?
Purveyor of Egg Liqueur to Lucifer
Vmax8
I don't think a helmet gives much more 'muffling' than a decent headset, does it?
Anyway, it would seem after a bit of a google, that it isn't too much of a problem out there heli-college.com however, perhaps there are some other issues that may need attention first !!!
"... one day I had a solo flight to OKC for maintanance, and had my music cranked up a little louder than when I have pax with me (not excessivly loud) and was surprised that I could barely hear the horn on my check. "
Helmet Comms - Vertical Reference Helicopter Forums
On a more serious and useful note, I wonder what the follow up on this was;
http://www.aaiu.ie/sites/default/fil...4%20EI-MAC.pdf
Using my helmet in a R22 or R44 is kind of a problem, as the low RRPM warning horn gets so muffled by the sound isolation of the helmet, that it's hardly noticeable. Therefore I prefer not to use a helmet on these aircrafts as I worry I won't hear the horn in a low RRPM situation. Is there any solution to it?
I don't think a helmet gives much more 'muffling' than a decent headset, does it?
Anyway, it would seem after a bit of a google, that it isn't too much of a problem out there heli-college.com however, perhaps there are some other issues that may need attention first !!!
"... one day I had a solo flight to OKC for maintanance, and had my music cranked up a little louder than when I have pax with me (not excessivly loud) and was surprised that I could barely hear the horn on my check. "
Helmet Comms - Vertical Reference Helicopter Forums
On a more serious and useful note, I wonder what the follow up on this was;
The FAA Technical Panel Final Report (17 March 1995) proposed the following:
Design Changes
An improved engine RPM governor
An increased low rotor RPM warning threshold.
Provide low rotor RPM warning horn through the intercom system.
Design Changes
An improved engine RPM governor
An increased low rotor RPM warning threshold.
Provide low rotor RPM warning horn through the intercom system.
Join Date: Jun 2012
Location: Denmark / Norway
Age: 41
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
Using my helmet in a R22 or R44 is kind of a problem, as the low RRPM warning horn gets so muffled by the sound isolation of the helmet, that it's hardly noticeable. Therefore I prefer not to use a helmet on these aircrafts as I worry I won't hear the horn in a low RRPM situation. Is there any solution to it?
Join Date: Oct 2011
Location: East of 20° E
Posts: 87
Likes: 0
Received 0 Likes
on
0 Posts
Lots of people flying and training in the R22 with helmets -
Helicopter License & Training Perth - Rotorvation Helicopter Services
A lot of pilots in GOM fly with helmets including some of PHI's S92 crews.
Helicopter License & Training Perth - Rotorvation Helicopter Services
I see in Shell Brunei's AW 139 delivery video that the pilots are wearing helmets....
Join Date: Oct 2005
Location: Central London
Posts: 460
Likes: 0
Received 0 Likes
on
0 Posts
African Eagle...
The Rotorvation site is a bit of a joke.
If you've been to Perth you'll know that for most of the year it's too hot to fly with doors on and the moped hats and boiler suits are only worn by image seekers.
Here is another image from their website with as Vertical Freedom would say 'no Kaptain Klown' suits.
And another
The Rotorvation site is a bit of a joke.
If you've been to Perth you'll know that for most of the year it's too hot to fly with doors on and the moped hats and boiler suits are only worn by image seekers.
Here is another image from their website with as Vertical Freedom would say 'no Kaptain Klown' suits.
And another
Vmax8
Quote:
Using my helmet in a R22 or R44 is kind of a problem, as the low RRPM warning horn gets so muffled by the sound isolation of the helmet, that it's hardly noticeable. Therefore I prefer not to use a helmet on these aircrafts as I worry I won't hear the horn in a low RRPM situation. Is there any solution to it?
I don't think a helmet gives much more 'muffling' than a decent headset, does it? [IMG]file:///C
Users\taper\AppData\Local\Temp\msohtmlclip1\01\clip_image 001.gif[/IMG]
If a warning horn is not properly audible when putting your helmet to its correct use, then the problem lies with the audio warning design, not the helmet. The helmet is designed to provide passive attenuation to a given specification, and active attenuation if ANR is fitted. The helmet is part of, for example, the intercom system, which is part of the aircraft, and all must be properly integrated. Few are, as you’ve discovered.
By design, a typical aircrew helmet, say the Mk4, will provide better passive attenuation than a headset. Attenuation is frequency dependent. The crucial area is low frequency (defined as 40 – 1kHz), where attenuation tends to vary a lot often due to ill-fitting helmets. Performance tends to be much better in the high frequency (above 1kHz) but this is not where the problem is (i.e. damaging noise, as opposed to annoying noise - a different but related subject). Hence, most ANR systems are designed to work in that lower region.
Quote:
Using my helmet in a R22 or R44 is kind of a problem, as the low RRPM warning horn gets so muffled by the sound isolation of the helmet, that it's hardly noticeable. Therefore I prefer not to use a helmet on these aircrafts as I worry I won't hear the horn in a low RRPM situation. Is there any solution to it?
I don't think a helmet gives much more 'muffling' than a decent headset, does it? [IMG]file:///C
Users\taper\AppData\Local\Temp\msohtmlclip1\01\clip_image 001.gif[/IMG]If a warning horn is not properly audible when putting your helmet to its correct use, then the problem lies with the audio warning design, not the helmet. The helmet is designed to provide passive attenuation to a given specification, and active attenuation if ANR is fitted. The helmet is part of, for example, the intercom system, which is part of the aircraft, and all must be properly integrated. Few are, as you’ve discovered.
By design, a typical aircrew helmet, say the Mk4, will provide better passive attenuation than a headset. Attenuation is frequency dependent. The crucial area is low frequency (defined as 40 – 1kHz), where attenuation tends to vary a lot often due to ill-fitting helmets. Performance tends to be much better in the high frequency (above 1kHz) but this is not where the problem is (i.e. damaging noise, as opposed to annoying noise - a different but related subject). Hence, most ANR systems are designed to work in that lower region.
Join Date: Apr 2006
Location: Sussex and Asia
Posts: 334
Likes: 0
Received 0 Likes
on
0 Posts
African Eagle posted that nice link to a training company in Perth. The reality is you can not fly like this for most of the year or you'd cook.
Doors on,helmet on but short shirt! The picture is posed.
Hence the reality of flying with the same training organisation here
and here we see no Kaptain Klown kit or doors.
That's how it is in Perth
Doors on,helmet on but short shirt! The picture is posed.
Hence the reality of flying with the same training organisation here
and here we see no Kaptain Klown kit or doors.
That's how it is in Perth
Join Date: May 2008
Location: Texas, Houston
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Northwall helmets
If anyone is going to buy this helmet make sure they look at the Facebook on safecomm who sells this helmet. Reading that scares me and I would run from this and find a better company to buy from .
Join Date: Oct 2007
Location: Germany
Age: 48
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
Alpha to Gallet
I am changing my Alpha to a Gallet at the moment. Having the Gallet fitted with the latest Senheiser set-up. Really for the sake of size, weight and an upgrade on the type of NR. So my Alpha-200 is up for grabs at the moment if anyone is interested.
Join Date: Apr 2013
Location: everywhere
Posts: 128
Likes: 0
Received 0 Likes
on
0 Posts
EVO 252?
So, I finally decided to get myself a bonedome. I have almost decided on a Gallet LH250, when I came accross a thing called "Evolution 252". It's a brand new helmet, released in April 14. Looks pretty neat, is lighter and cheaper than the Gallet.
Has anyone bought the EVO, or at least seen it up close? I have to make up my mind quickly...
Thanks!
C*
Has anyone bought the EVO, or at least seen it up close? I have to make up my mind quickly...
Thanks!
C*
Im in the same boat - the 252 looks nice, but unproven...
Anyone played with one? I spoke to the guys at helicopter helmets.com and they say that it is sort of a cross between the Gallet and Alpha (with the best features of both. Looks nice and good value, but I can't see an ANR option for it so will probably go for the SPH 4B. I have heard that the SHP4/5's are the coolest wearing option (temperature I mean)..
Anyone played with one? I spoke to the guys at helicopter helmets.com and they say that it is sort of a cross between the Gallet and Alpha (with the best features of both. Looks nice and good value, but I can't see an ANR option for it so will probably go for the SPH 4B. I have heard that the SHP4/5's are the coolest wearing option (temperature I mean)..
I'm guessing that as a Kiwi you will be looking at a helmet for use doing doors off work? If so, you may well find that ANR is worse than useless with the raised ambient noise doors off; the ANR often overloads and creates too much noise rather than reducing it.
CEP is much, much better for most helmets.
Join Date: Dec 2007
Location: Here.
Posts: 684
Likes: 0
Received 0 Likes
on
0 Posts
Hi Guys,
I am about to undertake some filming from a Jet Ranger and it has been suggested to me by the Production's Insurance Company that I wear a helmet.
I was just wondering where the most cost effective place is to buy a standard Alpha Helmet?
The obvious outlet is HSL but is there anywhere else with a more competitive price?
Would you stay clear of a cheaper, used helmet from eBay?
Your advice would be appreciated.
Many thanks.
I am about to undertake some filming from a Jet Ranger and it has been suggested to me by the Production's Insurance Company that I wear a helmet.
I was just wondering where the most cost effective place is to buy a standard Alpha Helmet?
The obvious outlet is HSL but is there anywhere else with a more competitive price?
Would you stay clear of a cheaper, used helmet from eBay?
Your advice would be appreciated.
Many thanks.
Join Date: Apr 2006
Location: South of the border
Posts: 113
Likes: 0
Received 0 Likes
on
0 Posts
I bought mine from HSL.
Personally I'd avoid cheap second hand helmets, but if money is an issue I guess something is better than nothing.
It's hard to put a price on the value of your own head!
Personally I'd avoid cheap second hand helmets, but if money is an issue I guess something is better than nothing.
It's hard to put a price on the value of your own head!