Diesel aircraft engines and are the light jets pushing out the twins?

In rec.aviation.owning Mike Rapoport wrote:
About the size of the Caravan 900hp+

Mike
MU-2

According to the Cessna website, the current Caravan is 675hp.

--
Jim Pennino

Remove -spam-sux to reply.

The Caravan has a 940hp engine flat rated to 675hp. Turbines are typically
flat rated so that the engine can make rated power to reasonable altitudes
and temperatures without having to design the gearbox for the full
thermodynamic horsepower. To keep the comparison with piston engines apples
to apples you need to use thermodynamic ratings.

http://www.pwc.ca/en/3_0/3_0http://w.../3_0_2_1_2.asp

To put some numbers on things, the engines in my MU-2 have a specific fuel
consumption of .55lb/hp/hr and a piston engine is about .45 and diesels can
be under .40. Huge (ship) diesels can be under .30. Compare your model
aircraft engines with the TFE731-60 used on the Falcon 900EX which uses
..405lb/lb thrust/hr

Mike
MU-2


wrote in message
...
In rec.aviation.owning Mike Rapoport wrote:
About the size of the Caravan 900hp+

Mike
MU-2

According to the Cessna website, the current Caravan is 675hp.

--
Jim Pennino

Remove -spam-sux to reply.

Mike,

TCM IO-520/550's running LOP are about .39-.40 BPSC according to the GAMI
folks, the SEMA engine is about .33-.35 from their specs. At 70K for their
engine conversion and the cost of JetA being within 10% of the cost of 100LL
at most GA airports I ageree with you and don't think we'll see a lot
diesel's in the near future.

The Diamond Twin really impresses me, can' t wait for an independent
(non-Flying or other slick mag) pilot report to see how it really does.

Ernie
BE36 E-160
KDVO


"Mike Rapoport" wrote in message
k.net...
The Caravan has a 940hp engine flat rated to 675hp. Turbines are typically
flat rated so that the engine can make rated power to reasonable altitudes
and temperatures without having to design the gearbox for the full
thermodynamic horsepower. To keep the comparison with piston engines
apples to apples you need to use thermodynamic ratings.

http://www.pwc.ca/en/3_0/3_0http://w.../3_0_2_1_2.asp

To put some numbers on things, the engines in my MU-2 have a specific fuel
consumption of .55lb/hp/hr and a piston engine is about .45 and diesels
can be under .40. Huge (ship) diesels can be under .30. Compare your
model aircraft engines with the TFE731-60 used on the Falcon 900EX which
uses .405lb/lb thrust/hr

Mike
MU-2


wrote in message
...
In rec.aviation.owning Mike Rapoport
wrote:
About the size of the Caravan 900hp+

Mike
MU-2

According to the Cessna website, the current Caravan is 675hp.

--
Jim Pennino

Remove -spam-sux to reply.

"Ernie Ganas" wrote

The Diamond Twin really impresses me, can' t wait for an independent
(non-Flying or other slick mag) pilot report to see how it really does.

Ernie

I hope they have a better single engine service ceiling than what they were
claiming during prototyping. I can't remember, but AIRC, it was less than 3
thousand feet.
--
Jim in NC


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Morgans,

I can't remember, but AIRC, it was less than 3
thousand feet.


http://www.diamond-air.at/en/products/DA42/facts.htm

FL180. But anything to bad-mouth a product not from the USofA, right?

--
Thomas Borchert (EDDH)

"Thomas Borchert" wrote in message
...
Morgans,

I can't remember, but AIRC, it was less than 3
thousand feet.


http://www.diamond-air.at/en/products/DA42/facts.htm

FL180. But anything to bad-mouth a product not from the USofA, right?

He said single engine...

Paul

Paul,

He said single engine...


Oops! My bad....

--
Thomas Borchert (EDDH)

On Fri, 17 Sep 2004 22:31:17 +0000 (UTC),
wrote:

In rec.aviation.owning Mike Rapoport wrote:
About the size of the Caravan 900hp+

Mike
MU-2

According to the Cessna website, the current Caravan is 675hp.

According to PWCa's website:

PT6A-114A

Take-off rating
Thermo ESHP 940
Mechanical SHP 675
Shaft RPM 1900

Perhaps Mr. Rapoport has spent some time driving behind a turbo-prop
(or two) and is a little more familiar with what these numbers mean
than you are.

TC

wrote in message
...
In rec.aviation.owning Mike Rapoport wrote:
About the size of the Caravan 900hp+

Mike
MU-2

According to the Cessna website, the current Caravan is 675hp.

--
Jim Pennino

What is the useful load left over of a Caravan, after you fuel it for a 900
NM plus reserves trip?

Oh, also, how about stopping the cross posting. Pick one.
--
Jim in NC


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