I believe it makes pressure regulation easier. Pressure regulation works by returning not needed flow (that is most of the forward flow) to the tank. With pumps in parallel the second pump doubles th
Further to my remarks regarding access door hinge pins: what I believe I have learned. I hope the pictures (ancient 2002 digital camera) make it a bit more clear than last time. 1 To remove all excus
What has always puzzled me. According to the specifications of the sensor the uncertainty in the initial zero offset is +/- about 25 % of our full scale of 0.5 psi (35 cm of water). Which in the gene
Tony K used the original large version of 26PC01??? , now available as 26PC01SMT at both Mouser and Digikey. Two important properties: - temperature compensation for the range 0 to 50 degrees C - fue
Curious about Peter's density difference of mogas and avgas I found: From http://www.engineeringtoolbox.com/api-gravity-d_1212.html I get: s.g. = 141.5 / (API + 131.5) From http://armyquartermaster.t
I don't know whether it was mentioned but the aircraft attitude will always have an influence on the fuel level reading. The less one succeeds in mounting the sensor right below the center of the tan
What you hope to measure is the difference in hydrostatic pressure caused by the "column" of fluid in the tank and the same "column" of air outside the tank. Almost any connection from sensor to the
Hi Graham, I should have added: overpressure at the top of the tank will be applied equally to both "columns" and have no influence on the measured difference. (I am assuming that the overpressure do
The maximum would be around 0.5 psi: the (pitot - static) differential pressure at 150 kts or so. About as large as the hydrostatic pressure difference caused by a full tank. So venting the pressure
Thank you. This seems to be the sensible solution. Temperature compensation, gasoline compatible and inexpensive too. Without g-force compensation but that is probably not so useful anyway. I am glad
Hi Remi, The unspoken issue that fuels the discussion is the desire to avoid cutting a hole in the tank. Ofcourse, Bob Harrison thinks a large hole is of the essence to allow yearly cleaning.. Jan de
Question to Dutch owners of a Europa. All Europas in the Dutch register seem to have had their type changed a while ago into "Europa AL ....". I would like to know what the "AL" means if anything. "A
If I understand the physics correctly.. For a lateral mass imbalance (the equivalent of) a sideways force on the stick that is proportional to g-force is in principle the only correct compensation. A
Re two-phase bridge rectifier/regulator. The 2 thyristors in the rectifier bridge do not short the AC input or "dump" anything. On the contrary, they disconnect the DC output from the AC input when t
Equally respectfully - "dumping to ground" is not dumping, but connection to the negative DC output terminal. I attach a little OpenOffice drawing that hopefully clarifies (I hope that works). Regard
It is called a rectifier-regulator because the rectifier (the bridge) also does the regulating; there is no separate regulating stage. Two of the four diodes of the bridge are replaced by a diode-cum
ad A: Don't agree. The only stress would be somewhat higher reverse voltage. The Ducati R/R is not a shunt regulator. ad B: Agree, but the thyristors are more stressed than the diodes. They drop a li
The attached document describes shunt regulators - they would be most likely to fail with an overvoltage result (failing shunt). The Ducati is not a shunt regulator - just a diode bridge with control