Discussion:
[Flightgear-devel] Bug in the fuel system of the Boeing 707
Ludovic Brenta
2014-12-24 21:02:48 UTC
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Hello,

I made a flight that ended in a miserable crash with --aircraft=707,
livery type=707-420 (from aircraft-data/707.xml). I took off at MTOW
and full fuel (and therefore only few passengers and cargo), 311000
lbs. During the course of the flight, the left reserve and main
tanks became empty; the main 2 and 3 tanks became almost empty then
oscillated between 90 and 105 pounds of fuel; the center tank fed main
2 and main 3; but main 4 and reserve 4 remained 100% full. As a
consequence, after a few hours of flight the ship became imbalanced,
entered an unrecoverable spiral to the right and crashed.

This happened with flightgear 3.0.0 and 707_20140311.zip from
flightgear.org.

I had a quick glance at Nasal/fuel-and-payload.nas but could not
immediately spot an obvious bug.

By the way, I found that the 707 does not appear in the FGRun menu by
default; I was able to correct this with this one-liner:

find $FG_AIRCRAFT/707 -type f -exec sed -i -r 's,Aircraft/707/,,g' {}
\;

Is there a place where I can report this bug more formally and in a
more traceable/searchable way than email?
--
Ludovic Brenta.
Alessandro Menti
2014-12-24 21:45:59 UTC
Permalink
Post by Ludovic Brenta
By the way, I found that the 707 does not appear in the FGRun menu by
find $FG_AIRCRAFT/707 -type f -exec sed -i -r 's,Aircraft/707/,,g' {}
\;
Is there a place where I can report this bug more formally and in a
more traceable/searchable way than email?
Yes, the project has a bug tracker at
http://flightgear-bugs.googlecode.com/, please report the bug there.

Cheers,
Alessandro Menti

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