Fuel consumption of a F15 (xxxF110xxx F100 PW 100 engine)

[W H G]

> I am working on F100PW100 engine, I try to set its combustion equation,
> I did for sea level which fuel consumption rate is 1.7 kg/s, and want
> to do for 36000 ft.
> some data:
> 1-sea level:
> a) fuel consumption is 1.7 kg/s (taken aviation magazine)
> b) air mass rate is 101,696 kg/s
> c) I set the combustion equation
>
> 2- I need 36 000 ft datas;
> a- fuel consumption ??
> b- air mass rate: I accounted it as 29,9768 kg/s by considering the
> same RPM and the same volumetric rate (m3/s) either sea level and this
> altitude.
>
> thank you, have a nice day...
>

First, the F100 is made by Pratt & Whitney, hence PW in the full
name, the F110 - also used by the F-15 - is made by a company
famous for light bulbs.

Fuel consumption of 1.7 kg/s - in full augmentation(afterburner). That
would be 13000 lb/hr - about right, as I recall for static (no forward
speed)
condition.

I remember air flow at mil and above is around 220 lb/s or 100 kg/s,
so you meant 102. kg/s? Have to be careful of period or comma
seperating the decimal fraction.
No one can measure the flow to 6 significant figures!

Fuel flow should scale with air flow, so multiply by the same ratio.

Remember these numbers are per engine.

--- W H G