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Fuel Burn for Mits



 
 
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  #1  
Old January 6th 05, 11:27 PM
Bravo8500
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Default Fuel Burn for Mits

Could someone who flies mu2's (I'm thinking short body other than
solataire) help me with these questions?

What altitude would you pick for a 300nm trip, no winds or wx
considered?
What's your fuel flow/hour in climb at sea-level?
What's the flow/hour in climb at 25,000?
Can you expect at least 2000fpm on a standard day, max load?

I'm trying to figure how much fuel they use on a 300 and 600 mile trip.


I'm flying a bonanza for a construction co now, but we want to go
faster and the business is doing good for now. Thinking about a Baron,
or step up to a P-Baron, or step even more up to a short body mu2.
Thanks for any info.

  #2  
Old January 7th 05, 04:35 AM
Mike Rapoport
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Default

I have the flight manual data for my Marquise in FlightMap and it says 665lb
for a 300nm and 1209 for a 600nm flight at ISA . The actual fuel
consumption tends to be about 7% higher than calculated and I would guess
that short model would be about 7% more fuel efficient.

Mike
MU-2

"Bravo8500" wrote in message
oups.com...
Could someone who flies mu2's (I'm thinking short body other than
solataire) help me with these questions?

What altitude would you pick for a 300nm trip, no winds or wx
considered?
What's your fuel flow/hour in climb at sea-level?
What's the flow/hour in climb at 25,000?
Can you expect at least 2000fpm on a standard day, max load?

I'm trying to figure how much fuel they use on a 300 and 600 mile trip.


I'm flying a bonanza for a construction co now, but we want to go
faster and the business is doing good for now. Thinking about a Baron,
or step up to a P-Baron, or step even more up to a short body mu2.
Thanks for any info.



  #3  
Old January 7th 05, 02:48 PM
Bravo8500
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Posts: n/a
Default

Thanks Mike.

I see that if you stay around 10k you'll go faster, but how much more
fuel does it cost you?

Say my fuel flow is 220/220 (~65 gph) at 19k, what would it be at 10k?

  #4  
Old January 7th 05, 05:37 PM
Mike Rapoport
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You don't go much faster at 10k than FL250 since you are limited to 250Vmo.
Highest speeds are reached at 16-20,000' depending on temp. You are not
going to see 65GPH at FL190 unless you run at partial power which you never
do. I see 220lb/hr at FL280 (Marquise and Solitaire have -10 engines) but
even with the lower-powered -5 or -6 engines you won't see fuel flow that
low at FL190.

I entered a flight from SZT to PDX (which is 296nm) into FlightStar and it
says that it requires 794lb of fuel at 10K' and 674lb at FL200. To figure
out what the real economics are you need to decide how many people are going
and how much fuel you are going to take off with. You don't want to take
off with 1600nm of fuel for a 300nm trip unless the fuel price differencial
is huge. You will burn about 10% of the fuel that you don't need just to
carry it around and you will also climb and cruise slower which increased
your maitenance costs. I would focus on maitenance and fixed costs which
are much larger even in this era of $3 jet A.


Mike
MU-2








"Bravo8500" wrote in message
ups.com...
Thanks Mike.

I see that if you stay around 10k you'll go faster, but how much more
fuel does it cost you?

Say my fuel flow is 220/220 (~65 gph) at 19k, what would it be at 10k?



  #5  
Old January 7th 05, 07:48 PM
Bravo8500
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Posts: n/a
Default

Thanks for the info. I didn't realize Vmo would be a factor at 10k. The
way I figure, a P-Model would be 435/hour plus around 20k anually for
ins,hang,training.

  #6  
Old January 8th 05, 04:22 AM
Mike Rapoport
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Vmo is redline, are you thinking of Mmo? Do you have an insurance quote? I
would guess that it will be close to $20,000/yr if you have been flying a
Baron unless you are a professional pilot. Have you included the cost of
getting to training and staying there? Training alone can cost $10K if you
include flying the airplane there (Orlando). Naturally, that depends on
where you live. It is a real pain and expense if you live in the PNW like I
do :-(

The $435/hr is probably realistic but on a long term basis only. It assumes
that you don't have to replace anything expensive for a long time (boots,
AACM windshields or cabin windows) Also the new maitenance schedule make it
much more expensive if you fly less than 200hrs/yr.

Mike
MU-2


"Bravo8500" wrote in message
oups.com...
Thanks for the info. I didn't realize Vmo would be a factor at 10k. The
way I figure, a P-Model would be 435/hour plus around 20k anually for
ins,hang,training.



 




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