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[simpits-tech] 737-200 fluel flow question [message #1423]

Tue, 22 June 2010 08:09

Justin Messenger
Messages: 159
Registered: January 2009

Senior Member

Im trying to calibrate fuel flow indicators but have no reference information. The gauges are marked PPH x 1000 and are calibrated at 0.5 - 1 - 2- 3 - 4 - 5 - 6 - 8 - 10 - 12.

I need need to know where those points should be when N1 reaches 10- 20 - 30 - 40 - 50 - 60 - 70 - 80 - 90 - 100 - 110

Regards,

Justin Messenger

KANSAS MUSEUM OF MILITARY HISTORY

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Re: [simpits-tech] 737-200 fluel flow question [message #1424 is a reply to message #1423 ]

Tue, 22 June 2010 13:50

Roy Coates
Messages: 438
Registered: January 2009

Senior Member

On Tue, 22 Jun 2010, Justin Messenger wrote:

Justin - I found this site only today so don't know if it can answer your
question but... http://www.b737.org.uk/

Roy.

> Im trying to calibrate fuel flow indicators but have no reference information. The gauges are marked PPH x 1000 and are calibrated at 0.5 - 1 - 2- 3 - 4 - 5 - 6 - 8 - 10 - 12.
>
> I need need to know where those points should be when N1 reaches 10- 20 - 30 - 40 - 50 - 60 - 70 - 80 - 90 - 100 - 110
>
> Regards,
>
> Justin Messenger
>
>
>
> KANSAS MUSEUM OF MILITARY HISTORY

--

Roy Coates.

------------------------------------------------------------ -------------------
Lord, If I must have an instrument failure, please let it be the Hobbs meter.
------------------------------------------------------------ -------------------

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Re: [simpits-tech] 737-200 fluel flow question [message #1425 is a reply to message #1423 ]

Tue, 22 June 2010 14:56

Sean Galbraith
Messages: 251
Registered: February 2009

Senior Member

Fuel Flow is not tied directly to N1, it depends on a whole deal of
other factors, like speed pressure/altitude etc. I can't remember what
the -200 is like, but I'd guess at something like 2200 pph at cruise....

SeanG

________________________________

From: simpits-tech-bounces@simpits.org
[mailto:simpits-tech-bounces@simpits.org] On Behalf Of Justin Messenger
Sent: Wednesday, 23 June 2010 3:09 a.m.
To: Simpits Tech
Subject: [simpits-tech] 737-200 fluel flow question

Im trying to calibrate fuel flow indicators but have no reference
information. The gauges are marked PPH x 1000 and are calibrated at 0.5
- 1 - 2- 3 - 4 - 5 - 6 - 8 - 10 - 12.

I need need to know where those points should be when N1 reaches 10- 20
- 30 - 40 - 50 - 60 - 70 - 80 - 90 - 100 - 110

Regards,

Justin Messenger

<http://www.nu-tekinc.com/>

KANSAS MUSEUM OF MILITARY HISTORY <http://kmmh.org/>

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Re: [simpits-tech] 737-200 fluel flow question [message #1426 is a reply to message #1423 ]

Thu, 24 June 2010 04:31

Brian Sikkema
Messages: 57
Registered: January 2009

Member

On 6/23/2010 12:09 AM, Justin Messenger wrote:
> Im trying to calibrate fuel flow indicators but have no reference
> information. The gauges are marked PPH x 1000 and are calibrated at
> 0.5 - 1 - 2- 3 - 4 - 5 - 6 - 8 - 10 - 12.
> I need need to know where those points should be when N1 reaches 10-
> 20 - 30 - 40 - 50 - 60 - 70 - 80 - 90 - 100 - 110
> Regards,
>
> *Justin Messenger*
>
> KANSAS MUSEUM OF MILITARY HISTORY <http://kmmh.org/>
>
>
Justin,

How soon do you need to know? Our engines are virtually identical to the
737's. As mentioned earlier, there's no direct correlation between FF
and N1, but next time I get some time to play in the sim I can get you
some rough numbers.

I do know that at ground idle you're sitting at about 900PPH, with N1 at
~10% or so. Flight idle kicks that up a bit. And yeah, 2200-2500 is a
good wag for cruise.

Brian

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