Cruising test

[Mobius_cz]

Today on Virtual Aerobatics server i tried some cruising, here are the results:

 

Range: 285 km +- 5 km

Time: 31 mins 30 secs

Average speed: around 540 km/h (calculated)

Engine set up: 2300 RPM; 1,1 ata

Altitude: 3400 m +-100 m

Fuel consumed: 26% = 136,2 litres

Fuel consumption per 1 km = 0,48 l/km

Fuel consumption per 1 hour = 259,4 l/h

 

Next time i will try the same route with 3000 RPM :)

Edited August 10, 2014 by Mobius_cz

[ericoh]

Thats gonna be interesting. Keep the numbers coming!

[Mobius_cz]

Range: 285 km +- 5 km

Time: 28 mins

Average speed: around 606 km/h (calculated)

Engine set up: 3000 RPM; 1,58 ata

Altitude: 3400 m +-100 m

Fuel consumed: 48% = 251,52 litres

Fuel consumption per 1 km = 0,88 l/km

Fuel consumption per 1 hour = 535 l/h

 

In high power rating it is quite thirsty :megalol:

 

 

Next time i will try 3250 RPM, if engine survives :music_whistling:

Edited August 10, 2014 by Mobius_cz

[HugePanic]

what do you expect??

 

Drag = 0,5 x density x speed² x frontarea x Cd

 

 

so if speed doubles, the drag is 4times as big...

 

the efficiency of the engile might also be worse at high RPM...

[Krupi]

what do you expect??

 

Drag = 0,5 x density x speed² x frontarea x Cd

 

 

so if speed doubles, the drag is 4times as big...

 

the efficiency of the engile might also be worse at high RPM...

 

This is useful information, he is showing what the most efficient cruise speed is.

[SAM77]

what do you expect??

 

Drag = 0,5 x density x speed² x frontarea x Cd

 

 

so if speed doubles, the drag is 4times as big...

 

the efficiency of the engile might also be worse at high RPM...

 

I expect people to butt out if they have nothing to contribute.

 

What happened???

You just learnt that formula in 1st year engineering and want people to think you are special.....dream on kiddy

[sobek]

You just learnt that formula in 1st year engineering and want people to think you are special.....dream on kiddy

 

If you can't keep the ad hominem out of it, then it is you who needs to butt out.

[Mobius_cz]

Actually i wasn't that surprised because like you (HugePanic) it is about drag. It will be quite nice if they implement even efficiency of this Jumo engine but without any data or working engine it is imposible.

 

Range: 285 km +- 5 km

Time: 27 mins 30 sec

Average speed: around 620 km/h (calculated)

Engine set up: 3250 RPM; 1,70 ata

Altitude: 3400 m +-100 m

Fuel consumed: 56% = 293,44 litres

Fuel consumption per 1 km = 1,03 l/km

Fuel consumption per 1 hour = 640 l/h

 

I found this PDF http://www.simcentrum.com/files/190D.pdf so i just want to know if it is close to this publications or ED used different numbers.

 

Range of the D9 Dora is about 810 km, when you calculated it with internal fuel capacity 232 litres front fuel tank and 292 litres rear tank you will get avarage fuel consumption around 0,65 l/km.

 

Also i was thinking that maybe some could be interested in these numbers.

Edited August 10, 2014 by Mobius_cz

[javelina1]

thanks for the data points! good info.