Wrathall Mark wrote:

You can make a low wing aircraft work with a BOTH fuel system. The RNZAF CT4
Airtrainers Aerobatics) have this system. Two wing tanks T'd. The two vents
are extended to the wing tips where thy are connected with a rubber tube and
hose clamps to an L  tube facing forward. (a crude pitot tube). If the
pilots report uneven feeding, you just rotated the vent tube for the
overfeeding tank a little out of the relative wind. (trial and error). The L
tube had a couple of little drillings in the aft end to keep it venting of a
bug blocked the entrance. There was only an ON/Off valve, so the pilots
would have to fly in a sideslip to level the tanks if they discovered a feed
imbalance on a cross-country.

While I worked on them the only fuel related failure was a student who let a
line-boy at a GA field fuel the plane with Jet A1, and them tried to fly
home. "Nothing is fool-proof to an especially innovative fool"

  

 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org