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ralphmalph
20th Jun 2013, 16:31
Well....why?

Surely it defeats the object!?

Dash8driver1312
20th Jun 2013, 17:03
That depends if your object is to be less vulnerable to flames in a post-crash fire or not.

ralphmalph
20th Jun 2013, 17:17
Cut to the chase brother! My sentiments exactly!

Adroight
20th Jun 2013, 17:36
Have you ever flown 8 hours per day in an un-airconditioned helicopter in +45 temps?

SASless
20th Jun 2013, 17:54
Yes.....and more actually....long sleeves, gloves, boots, helmet, body armor....and sweated my butt off.

Modtro
20th Jun 2013, 19:12
Me too, with armour plates all over the cabin and the windows closed to give extra protection, and two ridiculous fans keeping my face HOT. If it helps consider a 2 piece flight suit and a lot of cold water.

Flying Bull
20th Jun 2013, 19:35
Hi,
better have the sleeves up and don´t crash due to dehydration or heatstroke ...
My 2 Cents

Greetings Flying Bull

GipsyMagpie
20th Jun 2013, 20:18
Why not pump some cool water round a suitable vest? (Withdraw pin and lob...).

And as for the 2 piece I heard of some terrible thing happening to some spam when he had his shirt tails out and in an accident the fire went straight up his shirt like a chimney...

500e
23rd Jun 2013, 12:17
Fast Race Products: Driver Cool Suit Systems (http://www.fastraceproducts.com/page/fastraceproducts/CTGY/coolsuit)

African Eagle
23rd Jun 2013, 12:46
Although we don't have them, I've seen short sleeve flying suits in Africa over the years, used by both drivers and engineers.

Its simply because of the heat!

http://i01.i.aliimg.com/photo/v0/253470897/Flight_Suits.jpg_250x250.jpg

Saint Jack
24th Jun 2013, 01:38
Would it be permissable to wear safety flip-flops with a short-sleeved flying suit?

Gordy
24th Jun 2013, 01:46
Would it be permissable to wear safety flip-flops with a short-sleeved flying suit?

Don't see why not----I flew bare foot for 7 years. But was required to wear shoes on the ramp---hence I bought some clown shoes.

Arm out the window
24th Jun 2013, 01:58
With suitably wide lapels, they could be made to look like safari suits - a fashion triumph if there ever was one!

Thomas coupling
24th Jun 2013, 09:29
Ralph: Nanny state means nanny compromises.
The chances of being flash burnt in a post accident crash are slim to nil.
The chances of exposing unnecessary flesh to the chemicals/heat of working around the helo - slim to nil.
Common sense should prevail and the overiding factor is comfortable surroundings whilst flying, taking safety into account.

PS: Bear in mind that the moment your flying overalls are washed/dry cleaned - means the end to the flash protection it previously provided.

unknownmoniker
24th Jun 2013, 10:52
PS: Bear in mind that the moment your flying overalls are washed/dry cleaned - means the end to the flash protection it previously provided.

I was recently corrected by a co-worker on the same point...

QUESTION:
What is the difference between inherently flame-resistant fabrics and chemically dependent flame-retardant fabrics?

Answer:
Protective apparel made with Nomex® is inherently flame-resistant. The actual structure of the fiber itself is not flammable, which means the protection is permanent. The protection is built into the fiber itself and can never be worn away or washed out. When exposed to flame, the aramid fiber swells and becomes thicker, forming a protective barrier between the heat source and the skin. This protective barrier stays supple until it cools, helping to give the wearer vital extra seconds of protection to escape.

Source: DuPont (http://www.dupont.com/products-and-services/personal-protective-equipment/thermal-protective/brands/nomex/faqs/nomex-industrial.html)

Company issue is Nomex long-sleeve, which means I roll the sleeves up normally :rolleyes:

arismount
24th Jun 2013, 10:57
Agree with TC that Nomex, boots, etc. are overkill in operations.

That being said, disagree with loss of fire protection due to washing. Nomex fire protection...such as it is...is inherent in the fabric and is not compromised by washing as directed, namely in a mild detergent with rinsing and hanging to air dry.

Thomas coupling
24th Jun 2013, 11:06
Aris: read the washing instructions.
Original nomex fabrics provide a maximum of 3 seconds of flashover protection. After their first wash/dry clean, this is reduced further.

obnoxio f*ckwit
24th Jun 2013, 15:20
Standard UK mil issue green flying suit passes the 4-second flash fire test in a flame chamber, and passes it well. After the 4 seconds of fire, the suit does not support continued combustion, remains intact and unburnt, if perhaps a touch crispy in places. I have seen the tests. (And the one on the original CS95, which was just scary).

Nomex is a fibre inherent in the fabric; it cannot be washed out. The fire retardancy of the garment can, however, be degraded by impregnation with dirt or oil, damage (such as ironing f*cking creases into the sleeves) and washing them with too much powder and/or inadequate rinsing, all of which can provide a 'flame path' through the fabric and allow the fire to penetrate.

However, if you are not wearing a minimum of one other layer under it, no matter how good the Nomex is (other fire retarding systems are probably available), you WILL burn.

500e
24th Jun 2013, 21:40
Flame Resistant Fabrics for Military Clothing and Tactical Gear | CarbonX Non-flammable Fabrics (http://carbonx.com/industries-tactical.php)
CarbonX - FAQ's - Frequently Asked Questions (http://carbonx.com/faq.php)

Carbon X will give longer protection

nigelh
24th Jun 2013, 23:05
No gentleman would ever wear a short sleeved shirt :eek:

Um... lifting...
25th Jun 2013, 15:32
No gentleman would ever wear a short sleeved shirt

Quite. And no lady would ever wear pantaloons.

The relevant point being: what have gentlemen or ladies to do with helicopter operations?:rolleyes:

nigelh
25th Jun 2013, 16:03
In my experience , nothing !!! So good point :ok:

Grenville Fortescue
25th Jun 2013, 16:17
what have gentlemen or ladies to do with helicopter operations?

There are very few ladies, and even fewer gentlemen, engaged in helicopter operations. ;)

MartinCh
25th Jun 2013, 16:24
Nigel, Ladies and gents get transported by scruffy crummy heli drivers in the bush, or sleek smart looking airliner style uniform on onshore medium twins. At least that's my perception.
You guys doing utility be glad your uniform is something practical, rather than 'black slacks and white pilot shirt'. I'm junior enough (helicopters) to have used 'company logo T-shirt' but prefer collared long sleeve cotton shirts for sun protection if nothing else. I'm dreading having to wear those even instructing light piston singles later on.

As to the picture posted, it's still considerable body/skin surface covering, the blue overalls. Having torso and legs covered would be higher on my agenda than forearms (not even whole arm from shoulder) for post-crash fire probability. It's down to 'Rule of Nines'. It also shows that baseball cap can be handy as well.

http://images.emedicinehealth.com/images/eMedicineHealth/illustrations/rule_of_nines.jpg

Grenville Fortescue
25th Jun 2013, 16:32
I am VERY glad that there is one area in your diagram which shows only a 1% incidence of encounter with burns.

MartinCh
25th Jun 2013, 18:46
No, Greenville, it's the IMPORTANCE (seriousness) of the skin surface for survival of the burn.
I would presume it's Europe-centric, though. Ehrm. Well, back to serious discussion.

MightyGem
25th Jun 2013, 20:10
Sorry, it's not the importance/seriousness either. It's the percentage of body/skin area.

MartinCh
26th Jun 2013, 00:10
yes, MG. Importance of (size of) area affected, dictating seriousness and likely 'pulling through' if dealt with promtly by emergency services. I try not to be (look) too nerdy and make it a lecture about human physiology/biology.

There's average cut-off percentage (of surviving serious burns) and that 1% doesn't matter much, if not connected with excessive blood loss. Exceptions to rule happen.

MightyGem
27th Jun 2013, 17:08
that 1% doesn't matter much,
It does if it's the only bit burning! :eek:

ralphmalph
28th Jun 2013, 20:11
I suppose......if there were a chance that things could go awry....you should wear protective gear?

Don't bang on about heat and stress......short sleeves does fxxx all to make much of a difference.

I have flown in 45 degree heat with body armour, a pistol, 200 rounds of 5.56 and a host of other crud attached to me.....along with combat clothing.

Now I fly with none of that, in plus 45 degrees and things just require getting used to.....it all depends on where you want to stop persevering.

If you have never even tried for a meaningful length of time.....try.

It goes part and parcel with a professional approach to flying.......

ralphmalph
28th Jun 2013, 20:13
Martinch,

If you had a cockpit fire in the instrument panel......what would you use to manipulate switches and fly the aircraft?

Do you wear gloves? Or are you hard enough to just crack on through the flames?

Fareastdriver
28th Jun 2013, 21:00
Wear what your passengers are wearing. If they are wearing body armour and carrying assorted ordinance get yourself some Nomex, body armour and have an assault rifle tucked away in the cockpit. If they are wearing immersion suits then do the same. If they ponce about in jeans and T shirts then a white short sleeved shirt with loads of rank braid and black trousers marks you out as the boss.

Modern turbine engine helicopters don't burn, anywhere. You have more chance of dying in an executive twin than a modern twin engined helicopter. When was the last JP1 refuelling fire? How can an instrument panel catch fire? Smoulder, yes, but burn? Engine fires? Spurious to real is about 1000 to 1. Even the real ones blow themselves out when the fuel is shut off.

Wear what you are comfortable in. Should you be a doom laden worrier then put on the whole nine yards complete with helmet. That's OK; I have had F/Os who have looked like astronauts but they are comfortable so they will fly well.

Me: I always wore the minimum I could get away with because I was always a bone idle relaxed flyer.

WASALOADIE
8th Jul 2013, 13:30
The Chinook accident at Hannover in the late 80's turned into an inferno. From what I remember, 3 crew members died as a result of the fore and 1 was severely burned, he only had a T-shirt and shorts under underwear provided.is flying suit and the burn pattern reflected this.

Flying suits give a limited flash fire protection, secondary layers beneath enhance the protection.

When I was in the RAF, we were mandated to wear flying coveralls and long johns beneath. However, I know that as the weather got warmer, some crews did not wear the cotton. I personally did and you got used to it.

However, when working in extremes of high temperature in the desert of Oman, we made the conscious decision not to wear the underwear due to the induced stress caused by overheating (We were living in tented accommodation with no air con). It was a matter of weighing up the risk of reduced efficiency against the risk of suffering an incident and subsequent flash fire.

Here in the desert where I am now, we wear full nomex flying coveralls with cotton T-shirts and cotton shorts beneath.

500guy
8th Jul 2013, 16:33
If there is any risk you should wear protection?
If thats the case you should wear nomex 24/7 Because there is always some risk.

In combat it makes sense, you are getting fired at. In other military flight ops they are preparing you for combat, so again it makes sense.

In civilian flight ops the chances of being in a post crash fire, while possible, are about the same as you being involved in a post crash fire in your automobile. Do you wear nomex when going to get the groceries?

Safety science teaches you to mitigate the greatest hazard. There comes a point where the increased fatigue created by fire resistant clothing exceeds the mitigating value of the protection it affords.

It should be up to the pilot to determine where that point is. We dont need babysitters.

RotorPilotRules
12th Jul 2013, 17:35
what is the best flight suits that protects against burn then?
anyone