Wrathall Mark wrote:

Chuck wrote>...I'm already working on an electonic fuel injection/ignition
system (aka FADEC)..

Mark wrote>
Symantics, but this is not a FADEC. None of the current certified aircraft
single level electronic engine controls are. The Full Authority part of the
name means you have to give up all mechanical connections to the engine. Are
you happy to let your pentium set the throttle butterfly position?? Turbofan
FADEC's cost $$$ for a reason, and they are about the only dual redundant
systems on ETOPS aircraft (everything else is treble redundant). Are will
willing to analyse the consequences of every EEPROM failure mode, Voltage
spike... GE, Pratt and Rolls have been doing this for years, but still get
caught out by the occasional uncommanded shut-down or loss of thrust control
due to some unforseen elctronics quirk.

I'm with the others, a dumb, proven, mechanical or electronic EFI, with
manual leaning is perfectly adequate, and safer.

Seeing as fuel or ignition system failure are the primary cause of engine
failure (not counting starvation here), and you are changing to a certified
powerplant for risk reduction, it makes no sense to change the fuel and
ignition systems to a first of type. You would then have all the cost and
mechanical disadvantages of the LYCON, all the unquantifiable risk
disadvantages of the experimental engine, and still spend the next two years
mucking around trying to get the thing working properly.

 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.

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