Jeff Spitzer wrote:

IIRC, the FJ44 has a Thrust SFC (lb fuel/lb thrust * hr) of just over .6 at
altitude.  The other problem with jets is this number climbs as you
descend.  It is probably approaching 1 at S.L.

Jeff Spitzer

So what is the thrust of the FJ44? I'll take a guess and say 700 pounds.
So 420 pounds per hour or about 70 gallons per hour at 400 MPH or
5.7 miles per gallon. At 350 MPH 5 MPG. Out of my price range.

Paul Lamar

Jeff Spitzer wrote:

FJ44 has TSFC of .66 lb/lb*hr, 520 lb dry weight, and 2,300 lb S.L. thrust
(I just remembered where I saw the specs)

Jeff Spitzer

Worse fuel burn. 1518 pounds per hour 253 gallons per hour.
500 MPH  2 MPG. Of course at altitude the burn and cruise thrust is
down so give them 4 MPG.

Paul Lamar
 
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