("Big John" wrote)
Isn't this the one that run's on JP and therefore won't need a lot of new
infrastructure to support?

Read someplace that both L & C were looking at developing a new generation
engine. Could the DeltaHawk have them worried?


DeltaHawk Q & A website:
http://www.deltahawkengines.com/questi00.shtml

Q: So, what fuels are acceptable for use in your engine?
A: Acceptable fuels are Jet A, Jet A1, JP5, JP8, D1 and D2, which are all
kerosene based. The high naphtha fuels (JP 4 and Jet B) are not suitable.

Q: Can jet fuel and diesel be mixed in the fuel tank (for example, when
changing fuel used as temperature changes), or should one fuel be chosen and
used forever.
A: Yes, the fuels can be mixed.

Q: Could you use heating fuel in your engine? I know this is not legal, but
in a pinch could this be done?
A: It would not be recommended but if done, certainly use a lubricity
additive.

Q:You have mentioned a using a lubricity additive when using Jet A. What is
this additive and how much is used?
A: Although it may not be necessary, we think it is good insurance to use
it. The product is usually added at the rate of one pint per 120 gallons
(~1,000 to 1), and costs about $4.75/pint (~ 4 cents per gallon). With the
new pumps, ½ the normal rate is probably adequate for "insurance" purposes.
This protects the injector moving parts and the pump piston. When we supply
engines, the specification and source will also be supplied. Any diesel
shop carries it.

Q: How can you make do with only a single engine control lever? Don't you
need to adjust mixture at some high altitude?
A: At a high altitude (above 18,000 ft) the fuel should be trimmed back.
This can be done either by the pilot, based on indicated altitude and a
chart provided by DeltaHawk, or automatically by an aneroid device (pressure
altitude sensor). Either way, it is the single lever, the fuel lever (or
"throttle"), which is being adjusted.


Montblack