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View Full Version : Oleg, any chance to speed up the late D-9?



XyZspineZyX
11-03-2003, 06:49 PM
The published low alt topspeeds for the D-9 varies. The factory fresh D-9's with MW50 boost could reach 605km/h, however later it was found that when seiling the cowling joints, speeds could be increased with 17km/h. A speed test dating from 03.01.45 shows a D-9 low alt topspeed of 622-625km/h. This new topspeed appears to be after the cowling joints have been sealed.

Source, Focke-Wulf Fw 190 2Long Nose"
An Illustrated History of the Fw 190 D Series

Dietmar Hermann
ISBN: 0764318764

Some of the Doras in JV 44 were even faster with a 640km/h low alt topspeed with Special Emergency with Compressor as Base-Engine.

Reference site below.

http://jagdhund.homestead.com/files/DoraData/horizontalgeschwindigkeiten.htm

<center>


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'When it comes to aircombat, I'd rather be lucky than good any day!'

</center>

XyZspineZyX
11-03-2003, 06:49 PM
The published low alt topspeeds for the D-9 varies. The factory fresh D-9's with MW50 boost could reach 605km/h, however later it was found that when seiling the cowling joints, speeds could be increased with 17km/h. A speed test dating from 03.01.45 shows a D-9 low alt topspeed of 622-625km/h. This new topspeed appears to be after the cowling joints have been sealed.

Source, Focke-Wulf Fw 190 2Long Nose"
An Illustrated History of the Fw 190 D Series

Dietmar Hermann
ISBN: 0764318764

Some of the Doras in JV 44 were even faster with a 640km/h low alt topspeed with Special Emergency with Compressor as Base-Engine.

Reference site below.

http://jagdhund.homestead.com/files/DoraData/horizontalgeschwindigkeiten.htm

<center>


http://members.chello.se/unni/rote3.JPG



'When it comes to aircombat, I'd rather be lucky than good any day!'

</center>

XyZspineZyX
11-03-2003, 07:14 PM
What? The first time I took on a D-9 I had to have therapy! It`s speed nearly took my head off! I don`t see why it needs speeding up...

I guess if it`s true. Fine. But as many people are aware factory specs don`t often hold up to actual flying reality. I read once German pilots actually complained that their planes weren`t flying to factory specifications...

...... /i/smilies/16x16_smiley-indifferent.gif


"Tis better to work towards an Impossible Good, rather than a Possible Evil."

SeaFireLIV.
(Spitfire & Escape Whiner Member).

XyZspineZyX
11-03-2003, 10:42 PM
nt = No Text


<center><img src= "http://perso.wanadoo.fr/christophe.arribat/stoffwjabo.jpg" height=205 width=385>

<center>"We are now in a position of inferiority...There is no doubt in my mind, nor in the minds of my fighter pilots, that the FW190 is the best all-round fighter in the world today."

British Air Marshall, Sholto Douglas, 17 July 1942

XyZspineZyX
11-03-2003, 10:57 PM
robban75:


Oleg has said in Soviet tests, the D-9 did not exceed 600kph (372mph) at sea level, and so I very seriously doubt there will ever be a D-9 in FB that exceeds this speed.

There seems to be some controversy over the fuel types used and whether or not MW-50 was used, but 372mph at sea level seems reasonable to me to represent the *overall* performance of the D-9 at this time.

Personally, I would love to see some of the "Super-Doras" of JV-44 added, or perhaps a FW190D-12 with a Jumo-213F.

What I'm really worried about is the Ta-152C.


<center><img src= "http://perso.wanadoo.fr/christophe.arribat/stoffwjabo.jpg" height=205 width=385>

<center>"We are now in a position of inferiority...There is no doubt in my mind, nor in the minds of my fighter pilots, that the FW190 is the best all-round fighter in the world today."

British Air Marshall, Sholto Douglas, 17 July 1942

XyZspineZyX
11-03-2003, 11:32 PM
FW190fan wrote:
-
- robban75:
-
-
- Oleg has said in Soviet tests, the D-9 did not
- exceed 600kph (372mph) at sea level, and so I very
- seriously doubt there will ever be a D-9 in FB that
- exceeds this speed.
-

The topspeed of 600km/h corresponds very well with German topspeeds before the cowling joints were sealed.
Anyways, just thought I'd give it a try!/i/smilies/16x16_smiley-happy.gif

Perhaps Oleg finds this interesting too?

<center>


http://members.chello.se/unni/rote3.JPG



'When it comes to aircombat, I'd rather be lucky than good any day!'

</center>

XyZspineZyX
11-04-2003, 01:11 AM
She is still pretty fast. And the climb rate is impressive. Infact thats one of its real draws to me. Even on a small map I can get significant altitude and then dive in on the enemy.

http://home.cogeco.ca/~cczerneda/sigs/temp_sig.jpg
"Never in the field of human conflict was so much owed by so many to so few." - Winston Churchill

XyZspineZyX
11-04-2003, 05:22 AM
robban75 wrote:
- The published low alt topspeeds for the D-9 varies.
- The factory fresh D-9's with MW50 boost could reach
- 605km/h, however later it was found that when
- seiling the cowling joints, speeds could be
- increased with 17km/h. A speed test dating from
- 03.01.45 shows a D-9 low alt topspeed of
- 622-625km/h. This new topspeed appears to be after
- the cowling joints have been sealed.
-
- Source, Focke-Wulf Fw 190 2Long Nose"
- An Illustrated History of the Fw 190 D Series
-
- Dietmar Hermann
- ISBN: 0764318764
-
- Some of the Doras in JV 44 were even faster with a
- 640km/h low alt topspeed with Special Emergency with
- Compressor as Base-Engine.
-

About a sentence later it looks like Rechlin rejected the idea of rubber seals for the engine compartment(page 103). Perhaps there was a shortage of rubber at this stage of the war. So the extra speed seems to only apply to the prototypes. We probably fly an ordinary production model.

That book is really great, made me wish for the D-12 and D-13 though. http://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gif

XyZspineZyX
11-04-2003, 07:25 PM
DangerForward wrote:
-
-...Perhaps there was a shortage
- of rubber at this stage of the war....

Excellent point.

There was indeed a shortage of rubber in Germany from 1943 - 1945. I'm guessing there were more critical applications for rubber, i.e. tires (imagine trying to take off without them :-O)

S!

SKULLS_LZ

SKULLS Squadron VF-98
"Better than the Best"

XyZspineZyX
11-04-2003, 07:45 PM
Perhaps we can focus on the Dora's that were using the Special Emergency with - Compressor as Base-Engine. 640km/h at tree top height! They were used in combat/i/smilies/16x16_smiley-happy.gif And successfully so!

Anyways, digging deeper into the mysteries of the D-9 low alt topspeed, a factory fresh D-9 using MW50 could achieve 612km/h(without sealed jointlines).

It would be nice to have Oleg opinion on this! But I can understand that he's busy. Anyways, it's an interesting topic!/i/smilies/16x16_smiley-happy.gif

<center>


http://members.chello.se/unni/rote3.JPG



'When it comes to aircombat, I'd rather be lucky than good any day!'

</center>

XyZspineZyX
11-04-2003, 07:48 PM
the Dora 1945 is (1.2b) a little bit faster on the deck as the Dora 44 , with 110% and MW50.

the "problem" is that she is faster at 100% only than with 100%+MW50 .

but, its still a BETA !!

http://www.jagdgeschwader53.flugzeugwerk.net/diverses/franky.gif

XyZspineZyX
11-05-2003, 11:15 PM
TA152 used the rubber things exclusively i believe... i have always wondered why the Dora seems slow on the deck, so many sotires i heard of Doras outrunning P51s and LA7s on the deck in the books i have at home, but not so on this game...

XyZspineZyX
11-06-2003, 01:39 AM
Roban,

Are you sure the 'Base-engine' mod was ever fielded? Do we even know exactly what it is?

You've used the example of JV 44, but as far as I know there is no evidence that any specially-equipped Dora's were used by the Wurger Staffel. Are you basing this on the comment by one of the pilots that Red 13 (W. Nr 213240, an early production machine) seemed to be a little faster than the other three aircraft?


robban75 wrote:
- Perhaps we can focus on the Dora's that were using
- the Special Emergency with - Compressor as
- Base-Engine. 640km/h at tree top height! They were
- used in combat/i/smilies/16x16_smiley-happy.gif And successfully so!
-
- Anyways, digging deeper into the mysteries of the
- D-9 low alt topspeed, a factory fresh D-9 using MW50
- could achieve 612km/h(without sealed jointlines).
-
- It would be nice to have Oleg opinion on this! But I
- can understand that he's busy. Anyways, it's an
- interesting topic!/i/smilies/16x16_smiley-happy.gif -
- <center> -
-
-
- http://members.chello.se/unni/rote3.JPG -
-
-
- 'When it comes to aircombat, I'd rather be lucky
- than good any day!'
-
- </center>

http://www.cebudanderson.com/images/a0001.jpg

XyZspineZyX
11-06-2003, 07:19 AM
Hi Irrp.

I base this special boosting from this site. http://jagdhund.homestead.com/files/Dora.htm
I see no reason why this boosting wasn't used, especially since these Dora's where forced to fight right after they took off. A high topspeed at altitiude wasn't really neccessary. The Germans many times fielded their protoypes even. Problem about this is that finding out exact when and how is hard if not impossible.

<center>


http://members.chello.se/unni/rote3.JPG



'When it comes to aircombat, I'd rather be lucky than good any day!'

</center>

XyZspineZyX
11-06-2003, 08:03 AM
Hey Robban,

Although it would make sense for the JV 44 Protection Flight to receive any special low-altitude Doras available, it seems that in reality they had to beg and borrow their four Dora's (maybe five) from other units. It appears that all four of the known servicable machines were hand-me-downs from neighboring operational and training units. Apparently the D-11, 'Rote 4', came from a Staffel leaders' training school.

Low altitude compressor or not, those Wurger Staffel Doras do look exceptionally good in their airfield recognition scheme!/i/smilies/16x16_smiley-happy.gif


robban75 wrote:
- Hi Irrp.
-
- I base this special boosting from this site. <a
- href="http://jagdhund.homestead.com/files/Dora.htm"
- target=_blank>http://jagdhund.homestead.com/files/
- Dora.htm</a> - I see no reason why this boosting wasn't used,
- especially since these Dora's where forced to fight
- right after they took off. A high topspeed at
- altitiude wasn't really neccessary. The Germans many
- times fielded their protoypes even. Problem about
- this is that finding out exact when and how is hard
- if not impossible.
-
- <center> -
-
-
- http://members.chello.se/unni/rote3.JPG -
-
-
- 'When it comes to aircombat, I'd rather be lucky
- than good any day!'
-
- </center>

http://www.cebudanderson.com/images/a0001.jpg