Basic Su-25 info

[Kula66]

Getting board with BS (there are only so many AI vehicles you can zap befroe it gets broing IMHO), so fancied some plain flying around and have always liked the challenge of the 25 - no fancy HUD, AFM etc.

 

I can land it ok, but I've been looking for basic flight info for the vanilla 25. Stuff like rotate speed, glide slope, landing speed etc. Are there extracts of the flight manual available on the net translated into English?

[Esac_mirmidon]

Maybe this could help you. Credits and thanks to Bimbac....

 

Su-25 Basics

[CoNa]

The manual should be included in the download of FC if I'm not mistaken.

On page 206 you have the landing and runway contact info. Both Su25 and T-frog has the same speeds.

 

There is a cockpit mod that might be useful over at Lockonfiles. Give you "flags" on the speed gauge.

 

http://www.lockonfiles.com/modules.php?name=Downloads&d_op=viewdownload&cid=180&min=50&orderby=titleA&show=10#cat

 

230kph is minimum speed flaps down, clean pylons and full tanks (white range flag)

350-480kph is combat flaps(white line above blue flag)

350-480kph best climb speed damaged engine (blue flag)

480-690kph recommended combat speed (green flag)

690-820kph best cruise speed/economic fuel

820+ expedite with minimum G-limits

[Esac_mirmidon]

How could both Su-25 variants had the same landing and take off speeds when the T-Frog weights 2000 Kg more in a clean configuration than the vanilla Su-25?

[CoNa]

How could both Su-25 variants had the same landing and take off speeds when the T-Frog weights 2000 Kg more in a clean configuration than the vanilla Su-25?

 

 

Agreed, but I have not found any information that say anything different. Not that I have been looking that hard though ;).

[Kula66]

Thanks for your help, that's just the sort of thing I was after ... Being an MPH guy, I find KPH a bit of a mystery!

[Boberro]

I found about basic Su-25:

 

- maximum speed with 4 bombs 250 kg and 2 x R-60 = 950 km/h (first series planes speed 850 km/h)

- max Mach = 0.82 (first series 0.71)

- ceiling = 7000 m

- range without additional fuel tanks at low alt = 510 km (first series 500 km)

- range with fuel tanks = 1850 km (firs series 1950 km)

- take off way in normal weight = 600 m, with maximum weight = 900 m

- speed when plane goes up from runway = 240-250 km/h

- plane way lenght after landing = 600 m

- landing speed 225-230 km/h

- Max G = 6.5

- normal weight = 14 530 kg (firs series 14 250 kg)

- maximum weight = 17 530 kg (first series 17 350 kg)

- landing max weight = 10 800 kg

- weapon normal weight = 1340 kg

- weapon maximum weight = 4340 kg

-fuel 3000 kg

 

Su-25T

 

- max speed = 950 km/h

- Ma = 0.82

- ceiling = 10 000 m

- range with weapons (2000 kg) on low alt = 400 km, at hight alt = 700 km

- maximum range = 2500 km

- take off way in normal weight = 600-700 m

- plane way lenght after landing = 600=700 m

- starting weight = 16 500 kg

- max weight = 19 500 kg

- weapons normal = 2360 kg

- weapons maximum = 4360 kg

- fuel = 3840 kg

 

 

I found this in Polish article about Frogfoots.

[Bimbac]

Maybe this could help you. Credits and thanks to Bimbac....

 

Anytime, mate! :thumbup:

[shad0w]

Maybe this could help you. Credits and thanks to Bimbac....

 

Su-25 Basics

 

 

BTW - there is a lot of translation errors in ILS doc. Fortunately, they are for non-implemented instruments.

[CoNa]

How could both Su-25 variants had the same landing and take off speeds when the T-Frog weights 2000 Kg more in a clean configuration than the vanilla Su-25?

 

You are correct, in IRL at least.:thumbup:

Just read a nice book about the frog by Yefim Gordon and Alan Dawes: Sukhoi Su25 Frogfoot.

 

According to it the Su-25 landing speed is 210 km/h while 230 km/h for the Su-25T.

 

Good book if you want to know more on the history of the frog.

[Esac_mirmidon]

Where to buy that ?

[CoNa]

Amazon is one place:

http://www.amazon.co.uk/Sukhoi-Su-25-Frogfoot-Support-Aircraft/dp/1840373539/ref=sr_1_6?ie=UTF8&s=books&qid=1231879921&sr=8-6

[Esac_mirmidon]

Thanks Cona, Don´t ask what your name means in my Country ( best said in my Autonomous Region Language- Galicia ) XDDDDDD

[CoNa]

Thanks Cona, Don´t ask what your name means in my Country ( best said in my Autonomous Region Language- Galicia ) XDDDDDD

 

 

Had to check it out . ROFL :D:D:D

[WildBillKelsoe]

here is a mathematic : that the 100% fuel delivers 0.416 km for each kilogram used. Tailor a mission, or use the campaign to confirm. And if your speed is 590-630 km/h, then you're economic. I had to since the hard way of learning.

[RvETito]

Fuel consumption per kilometer flight is used only in civil aviation for economical calculations. For a plane like the Su-25 it's the specific fuel consumption that matters. If it's 0.416kg/kgf/h that means that at full power an engine burns 0.416kg fuel for one kilogram force of thrust for 1 hour.

[WildBillKelsoe]

Fuel consumption per kilometer flight is used only in civil aviation for economical calculations. For a plane like the Su-25 it's the specific fuel consumption that matters. If it's 0.416kg/kgf/h that means that at full power an engine burns 0.416kg fuel for one kilogram force of thrust for 1 hour.

 

That is correct. I was talking about full mil power consumption. I just thought to add to this thread since I had my beef with fuel in CWW and was forced to eject numerous times or land at unprepared aerodromes, just to get the annoying 100% refuel bug (at Krasnodar for instance, or Pashkovsky).

 

I always like to economize on fuel, specially with extra tanks, since the whole point behind the Rook, is to hit and run, hit and run, hit and run, and this demands saving FMP for those maneuvers. Right now, I'm stuck in the 1000 base cloud mission.