REFLECTOR: 11,500 data for the DH engine

[Alex Balic]

Yea, but the other nice thing about diesel engines is that unlike gas
engines, they are not too particular about their fuel- you can burn
vegetable oil in there too- might have a different amount of energy then
the petroleum but it will run pretty well- there are several "green"
folks around the country that run diesel VW rabbits on used French fry
oil- (which they usually receive for free) as long as you filter it, it
will run just fine- they say that the exhaust smells like fries though-
 
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of jp211 at comcast.net
Sent: Thursday, May 12, 2005 11:50 PM
To: Velocity Aircraft Owners and Builders list
Subject: RE: REFLECTOR: 11,500 data for the DH engine
 
Not in a water pressure contest here over "a rose by any other name" but
when I hear "diesel" to me it means lets pull over and get some Texico
stuff for the bird.  When I hear "Jet-A" I hear a product that has very
tighly held specs just as 100LL or Avgas.  
Jet-A in Racine will be nearly the same quility as other Jet-A in
Nirobi.  Diesel fuel in Racine can vary from Texico to "Brand-X, and get
a 6 pack to go" to Costco fullup.  Do you know what your getting is all.
Now I will crawl back to my room here in Tokyo and wait for the words,
Thanks
\JP
 
-------------- Original message -------------- 
OK, let me re-phrase that then - both diesel fuel and its very close
relative, Jet A fuel both have more energy available (in the form of
calories) per gallon  then does either Auto Gas or 100LL  -  and a water
cooled diesel is just going to be a lot more efficient then an air/fuel
cooled gasoline engine.
 
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of jp211 at comcast.net
Sent: Thursday, May 12, 2005 10:23 PM
To: Jim_Agnew_2 at yahoo.com; Velocity Aircraft Owners and Builders list
Subject: RE: REFLECTOR: 11,500 data for the DH engine
 
 
It's Jet-A
 
-------------- Original message -------------- 

> A good Diesel is about 30% more efficient than a standard gas engine
(auto) 
> given the lower efficiency of the aircraft engine 36% would sound
about right. 
> Remember that these numbers are based on VOLUME burned e.g., gallons
not weight 
> since diesel is denser. 
> 
> Jim 
> --- Alex Balic wrote: 
> > Yea, that should be about right- diesel fuel has more energy per
gallon 
> > then 100 LL and the direct injection process by design allows it to
run 
> > at max efficiency (no throttle plate) 
> > 
> > -----Original Message----- 
> > From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]
On 
> > Behalf Of Grigore Rosu 
> > Sent: Thursday, May 12, 2005 7:58 AM 
&! gt; > To: reflector at t! vbf.org 
> > Subject: REFLECTOR: 11,500 data for the DH engine 
> > 
> > 
> > Just noticed that Deltahawk published (yesterday) airspeed and fuel
flow 
> > 
> > data for their DH160-equiped Velocity flying at 11,500 altitude. 
> > 
> > To me, as a non-expert in engines, that data seems just amazing: 
> > 
> > > ... at 145 KTAS and 11,500 feet MSL the DeltaHawk is burning only
3.81 
> > 
> > > GPH or more than 36% LESS fuel than the IO-360 ... 
> > 
> > Grigore 
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> 
> James F. Agnew 
> Jim_Agnew_2 at Yahoo.Com 
> Tampa, FL 
> Velocity 173 Elite Aircraft Completed & Flying 
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