REFLECTOR: 11,500 data for the DH engine

[Grigore Rosu]

On Deltahawk's page, they also say the following:

> The bottom line is that a DeltaHawk engine can be expected to decrease 
> fuel consumption of a gasoline powered airframe by 30 to 40%, while 
> increasing range almost 60%.

So probably the difference in fuel weight is not that important after all.

Sorry for sounding perhaps too enthusiastic about the DH engine.  I'm just 
thinking of what engine to use for my not-yet-started-Velocity and so far 
I see no reason not to choose a DH engine.  If Velocity/Deltahawk will 
indeed be able to provide the DH engine kit for Velocities soon, I'm 
wondering what reasons one who didn't start building yet could have not to 
go with a DH engine.  I'm just talking to myself loudly, but I guess other 
builders, more experienced than I am, are also considering, or 
disconsidering, DH engines.  So any thoughts may be useful to many of us.
I hope I'm not pushing a wrong buton here ...

Thanks,
Grigore


On Fri, 13 May 2005 jp211 at comcast.net wrote:

>
> 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
>>> To: reflector at tvbf.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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