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- Newsgroups: rec.aviation.homebuilt
- Path: sparky!uunet!gumby!wupost!darwin.sura.net!lhc!masys
- From: masys@nlm.nih.gov (Dr. Daniel R. Masys)
- Subject: Re: Painting strategies?
- Message-ID: <1992Nov20.154458.17578@nlm.nih.gov>
- Organization: National Library of Medicine
- References: <311.148.uupcb@pcs.sj.ca.us> <1992Nov20.131109.9561@dartvax.dartmouth.edu>
- Date: Fri, 20 Nov 92 15:44:58 GMT
- Lines: 33
-
- In article <311.148.uupcb@pcs.sj.ca.us>
- paul.burnett@pcs.sj.ca.us (Paul Burnett) writes:
- >
- >> >Nitrate Lacquers (don't think anyone makes these anymore...)
- >>
- >> Wanna bet? <G> The cheap spray cans of paint at the local hardware
- >> store are nitrocellulose-based lacquer.
- >
- A little story about nitrate-dope aircraft finishes:
- At last years' owner-assisted annual, I was working in a large hangar
- next to a Maule which was having some work done on its main gear.
- The fabric was hanging down next to the main gear, and the A&P was
- using a hand held disc grinder to smooth a welded joint. A spark from
- the grinder hit the doped fabric and *presto*, a brilliant flame and
- copious smoke filled the hangar. A fire extinguisher was within reach,
- and they got the flames smothered in perhaps 20 seconds or less, but
- not before a couple of square feet of fabric went up in flames.
- As we stood around after the evacuation, and the smoke was clearing,
- the A&P said this was pretty common with nitrate finishes.
-
- So if your tube & fabric sweetheart has a nitrate dope finish and a
- forced landing is immanent, you might want to get those doors open for
- an instantaneous egress after touchdown; no telling what might make
- a spark in the wrong place. Those flames spread so fast that I would
- estimate less than a minute before the entire airframe would be
- engulfed; very impressive indeed. An inflight fire in such a bird
- is a sobering thought...
-
- Dan Masys
- masys@nlm.nih.gov
-
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