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XyZspineZyX
09-02-2003, 12:38 PM
A discussion started on my dogfight server last night.

I would like some layman explanation on determining the most efficient climb speed for a given aircraft.

Thanks in advance!

S!
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XyZspineZyX
09-02-2003, 12:38 PM
A discussion started on my dogfight server last night.

I would like some layman explanation on determining the most efficient climb speed for a given aircraft.

Thanks in advance!

S!
609IAP_Recon

Forgotten Wars Virtual War
Forum: http://fogwar.luftwaffe.net/forums/index.php
Website: http://forgottenwars.dyndns.org
Visit 609IAP at http://takeoff.to/609IAP

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XyZspineZyX
09-03-2003, 01:21 PM
OK as it can be trickt to start from Sea Level it is normally easier to start "timing" at around 1000M.

If you are testing "absolutes" then I would use these settings :

Overheat OFF
Wind OFF
Cockpit OFF
Speedbar ON

Take-off and get your aircraft to the spped you want to test at. General rule, light aircraft lower speed. Eg: Bf109 E-4 = 250Kph but FW190 A-9 = 290 Kph.

While below 1000M get into the correct flight attitude (use Trim if needed) and maintain the same speed. Keep this speed (pitch attitude may vary) and start a stopwatch timer the instant you pass 1000M. record a track if you like and time it afterwards so you are not so busy /i/smilies/16x16_smiley-wink.gif

Get to your desired altitude (lets say 4000M) and stop the timer.

Repeat the process at a different speed. I would try ihncrements of 10 kph if you can manage it or maybe 20 kph at first.

So try say 220 240 260 280 300 and see which one is fastest from 1000M to 4000M (or whatever) if you get chance to then time each "Leg" from say 1000-2000, 2000-3000 and 3000 - 4000 You get the idea.

If you want less "absolute" values and more "in gmae2 numbers then leave the overheat ON and see how much fun you have there /i/smilies/16x16_smiley-wink.gif

Note down Power settings and if you used any boost systems (if available) and if you get time test with and without. You might find you get some really wierd results /i/smilies/16x16_smiley-very-happy.gif

For example at around 8000M the Bf109 K-4 is actually FASTER WITHOUT MW-50 - Hmmmmmm..... OK

Good luck - it is very boring and time consuming, plus when the next patch comes out you have to do it all over again LOL

JG5_UnKle

"Know and use all the capabilities of your airplane. If you don't sooner or later, somebody who does, will kick your ***"


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XyZspineZyX
09-03-2003, 01:25 PM
The Fw 190D-9 climbs best at 280km/h, according to Tank himself!/i/smilies/16x16_smiley-happy.gif I managed to get an initial climbrate of 4200ft/min at this speed with the D-9 '45.

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XyZspineZyX
09-03-2003, 01:30 PM
I have always thought that climbing right at the edge of a stall would yield the best results, around 220-200 kph. I guess I was completely wrong, thanks for the info guy!

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XyZspineZyX
09-03-2003, 02:02 PM
robban75 wrote:
- The Fw 190D-9 climbs best at 280km/h, according to
- Tank himself!/i/smilies/16x16_smiley-happy.gif I managed to get an initial
- climbrate of 4200ft/min at this speed with the D-9
- '45.
-


Robban,

Have you noticed any difference in performance between the 44 with Erhohte Notleistung vs 45 with MW50? While I haven't done any methodic testing, my seat of the pants observations make me feel the 44 has the advantage.

TX-Zen
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XyZspineZyX
09-03-2003, 02:18 PM
Shifty101 wrote:
- I have always thought that climbing right at the
- edge of a stall would yield the best results, around
- 220-200 kph. I guess I was completely wrong, thanks
- for the info guy!

Indeed. Often the speed for best climb is very close to that of best glide (somewhat slower due to the prop-wash providing a bit of lift.)

Somewhat OT: Yesterday I made a test somewhat similar to this, in trying to figure out the stall speed, with engine pulling, of one of the club's planes. Turned out I could, with near maximum power and full flaps, fly and even climb every so slightly at 38KIAS. The nose up attitude was scary! In a glide, the stall speed was just below 50KIAS with full flaps.
_
/Bjorn.

XyZspineZyX
09-03-2003, 02:23 PM
Thanks for the explanations.

Makes perfect sense.



I'm curious to the best climb speeds for the US planes, and then the p51 when it comes out. This gives me the info I need to test.


And I laughed when you said it all changes with next patch - I wonder if 1.1 final will have altered climb rates again - LOL!!


Much appreciated - Salute!

S!
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XyZspineZyX
09-03-2003, 02:54 PM
He he he.

Think Bf-109 E-4! In FB V 1.0 the Emil could climb better than a G-2 (Total BS!) with a sustained climbrate well over the 22-24 m/s you get out of the G-2.

All sorts of interesting figures come out when you start doing some climbrate tests. Post-patch the Emil now behaves more realistically and doesn't climb like a K-4 /i/smilies/16x16_smiley-wink.gif

The heavier stuff like the Jug should climb well at around 280-320 Kph depending on Fuel and ammo load. Heaver loadout = Faster best climb speed.

Something like an Emil climbs well at about 250Kph but the K-4 is much better suited to around 270-280 Kph.

Post anything you find - but tread carefully my friend - here there be Dragons /i/smilies/16x16_smiley-very-happy.gif Make sure that you note down the following:

Fuel Load / Ammo Load
Radiator Settings (auto/closed/open/2,3,4,6,8 etc)
Power Settings - Boost/MW50 etc or 100% 110%
Realism settings, CEM on of course /i/smilies/16x16_smiley-wink.gif
Auto Prop Pitch or Manual?

If you have all this info then someone else can repeat your tests and should get pretty much the same results.

Also read the airspeed from the No-cockpit View Speedbar as this is TAS and not IAS !! Important point that one!!

JG5_UnKle

"Know and use all the capabilities of your airplane. If you don't sooner or later, somebody who does, will kick your ***"


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XyZspineZyX
09-03-2003, 03:01 PM
Some aircraft have a rate of climb gauge.

Try to maximize the rate of climb while at the same time keeping your speed constant. That's when you've found it.

/i/smilies/16x16_smiley-happy.gif

XyZspineZyX
09-03-2003, 03:24 PM
Also write down the prop RPM.
_
/Bjorn.

XyZspineZyX
09-03-2003, 04:14 PM
TX-Zen wrote:
- Robban,
-
- Have you noticed any difference in performance
- between the 44 with Erhohte Notleistung vs 45 with
- MW50? While I haven't done any methodic testing, my
- seat of the pants observations make me feel the 44
- has the advantage.
-
- TX-Zen
- Black 6
- TX Squadron CO

The 1944 D-9 has significantly better performance than the '45 D-9. It's just as superior in 1.1b as in pre patch.

Here are some numbers. Full fuel, 110% with full boost, climb at 280km/h. Closed radiators. The climb numbers written on the Jagdhund site might be with radiators on auto. So they should differ a little from the game numbers.

In minutes and seconds.

Fw 190D-9 1945

1000m = 0.39
2000m = 1.27
3000m = 2.15

1min = 1400m
2min = 2700m
3min = 4000m

Fw 190D-9 1944

1000m = 0.35
2000m = 1.20
3000m = 2.05

1min = 1580m
2min = 2890m
3min = 4200m

La-7........

1000m = 0.35
2000m = 1.15
3000m = 2.00

1min = 1700m
2min = 3000m
3min = 4100m

The speed of the '44 D-9 is much superior to the '45 D-9 aswell, I haven't done any tests myself but someone posted a speed test not too long ago and it showed the early D-9 to be over 20km/h faster at alt compared to the late D-9.

As far as climbrate goes, the late D-9 is more correct, although it's not as fast as it should be. AFAIK RL topspeed should be 703km/h at 5900m



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Message Edited on 09/03/0303:27PM by robban75

XyZspineZyX
09-03-2003, 04:17 PM
For comparison to FB fm to the rl D-9

http://jagdhund.homestead.com/files/Dora.htm

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