Mr Spaceman From Canada, joined Mar 2001, 2787 posts, RR: 8
Reply 2, posted (12 years 8 months 3 weeks 4 days 15 hours ago) and read 3598 times:
It sounds like you are correct sir.
An hour ago I received an email from a fellow named Mike. He stated that the tanks were Aircraft Fire Extinguishers (Firebottles).
So I replied to him and said his answer made perfect sense to me, incase the A-10 experienced a hot start on either engine which then caused a fire.
Question ....... How do "foam Generators" work? Does a chemical reaction occur in the tanks which creates a lot of foam? Also, how far can these foam generators spray? It sounds like pretty interesting stuff is going on in those tanks!
JohnM From United States of America, joined Feb 2001, 370 posts, RR: 0
Reply 3, posted (12 years 8 months 3 weeks 4 days 10 hours ago) and read 3534 times:
Yes they are indeed fire extinguishers. It is standard AF procedure to have a bottle (or bottles) with any parked airplane. The fire fighting agent is pressurized with nitrogen over the agent, and pushes the agent out when the hose is charged and nozzle opened. The stuff used to be CB, some sort of nasty toxic crap. Then it changed to halon. That went away due to the greenhouse gas isssue. I really don't know what the stuff is now. I think it is a non greenhouse halon type of agent. You have about 30 seconds of flow time per bottle. If used correctly, can put out a lot of fire. They are always a good thing to hang a shirt, lean on, etc. I always take time to read the grafitti that is written on each one, some bottles have some extensive world travels! Also if you don't get caught, can be used as a field expedient step ladder. There is your useless facts for today!
Saintsman From United Kingdom, joined Mar 2002, 2065 posts, RR: 2
Reply 9, posted (12 years 8 months 3 weeks 6 hours ago) and read 2966 times:
The most common fire extinguishers that I have used on aircraft are carbon dioxide, followed by Halon. You would not want to use foam due to the mess it makes.
The only aircraft fires I have come across have been electrical (so you wouldn't want foam anyway), starter motor type where they have burnt out (CO2 or halon) and brake fires where you use dry powder (also messy but you don't want to use cold gas or liquid on a red hot brake due to the risk of it exploding).
We're also only talking about small fires. The fire sevices deal with big fires.