Beta 13 is out

[214thCavalier]

And has some neat additions.

Enabled the B-17.

Started implementation of a new fuel consumption model. Fuel burn rate will now vary with altitude and the various RPM and manifold settings should produce an appropriate speed and fuel consumption which translates to an appropriate range and endurance for each plane. As we implement this to all planes, the RPM and MP gauges will display the correct settings for each plane. This is currently implemented on the P-51D, Spit IX, Spit V, B-17, and B-26.

Added E6B button to your inflight clipboard. This will bring up flight information such as fuel burn, range, endurance, wind, and speed information. An E6B is a small mechanical flight computer.

Changed the way engine sounds work. Pitch changes are now tied to RPM and volume changes are tied to throttle settings.

Remodeled the Spit V performance. The Spit V uses a C wing with B wing armament. Weight went up a little and a higher WeP rating is now used.

The Spit V and IX had their fuel loads reduced to the correct amount. The Spit IX now has a slightly higher empty weight.

The rest is bug fixes.

[Guppy35]

Think he got the Spit V wing bit bassakwards.  It's a Spit Vb wing with Vc armament.  B wing had 60 cannon shells per gun, this one has 120.

Dan/Slack

[mars01]

And it seem to have the roll rate of a brick now?  I know the spit doesnt have a great roll rate but it's not even good anymore.

[Dead Man Flying]

Originally posted by mars01
And it seem to have the roll rate of a brick now?  I know the spit doesnt have a great roll rate but it's not even good anymore.

It's peculiar if only because the Spit IX does not suffer from the same torque problems and anemic roll rate.  Of course, I don't know if such differences mirror actual data or if flight models are simply incomplete.

-- Todd/Leviathn

[mars01]

Hmmm, I didn't take the 9 up - hopefully it's a bug, otherwise Slappy is not going to be too happy lol.

[Pyro]

Originally posted by Guppy35
Think he got the Spit V wing bit bassakwards.  It's a Spit Vb wing with Vc armament.  B wing had 60 cannon shells per gun, this one has 120.

Dan/Slack

I think you read your source wrong.  There is no such thing as a b wing with c armament.  You can have a c wing with b armament but not the reverse.  It's why the C wing is known as the universal wing.

As to the ammo capacity, the 60 round capacity was a result of the drum magazine used on early planes.  That installation was never considered satisfactory in a wing mounting as the gun had to be mounted on its side and was prone to malfunction.  This was alleviated by the development of the Belt Feed Mechanism Mark I by Molins for use with the Hispano Mk II.  By mid 1941, all new installations used the new belt feed and existing installations were refitted with the new belt feed.  So you would not see a 60 round capacity in a VC at all and you would only see it in a Vb early in its service life.

The roll rate shouldn't have changed.  Sounds like a possible bug.

[Kweassa]

The SpitV never was a good roller anyways. Frankly the MkIX and MkV in AH1 was rolling too fast, especially at high speeds.

 Now, in beta versions of AH2, the SpitV really starts to show some trouble in maneuvering when going over 300mph - roll rates can be appropriately commented "slow". Over 400mph, it becomes really heavy.

 Golly, if that's considered a bug and gets removed, all the good impressions I had about the new AH2 flight model goes out with the trash...  

 If there's anything weird with Spit rolls, try the Spit14. It rolls almost like a 190.

[mars01]

Well Kweassa,

The SpitV never was a good roller anyways. Frankly the MkIX and MkV in AH1 was rolling too fast, especially at high speeds.

Based on what?

It can't be as bad as it is.  You move the stick and the thing barely rolls at any speed.  

Luckly pyro mentioned they didn't expect the roll rate to change, which it had from AHI.

[Pyro]

I was referring to a change from the last beta.  Most roll rates are roughed in at this time.  I'll be developing accurate curves for that soon when we get some more planes enabled.  I want to do that in groups rather than individually because if makes something questionable a lot more obvious.

[Kweassa]

It's top rate of roll for the unclipped wings was like 105 degrees per second at 200mph indicated. Full three seconds and some more tidbits to complete one roll.

 300mph indicated and it falls down to what, 76degrees? About 4.5 seconds for a 360.

 The Ah2 Spits match that closely. Try it yourself. Pop out the nifty E6B and start rolling when indicated speeds are reached, and time it with a stopwatch. You'll see it isn't exactly "barely rolls at anyspeed".

[Pyro]

Thanks for the clarification Kweassa.  I was thinking it all of the sudden developed some glacial roll-rate in the last version.

[Dead Man Flying]

Originally posted by Pyro
Thanks for the clarification Kweassa.  I was thinking it all of the sudden developed some glacial roll-rate in the last version.

Nope, sorry for the miscommunication.  The confusion around the Spit V's roll rate stems less from its inability to roll than for the ability of similar planes to roll far, far better.  The Spit IX and Spit XIV in AH2 roll substantially better at all speeds and seem to behave differently in general (i.e. the Spit V seems to roll far better to the left than to the right, but the Spit IX and Spit XIV don't seem so clear-cut).  Your comments on the incomplete roll rate data cleared that discrepancy up.

-- Todd/Leviathn

[Kweassa]

The Spit IX and Spit XIV in AH2 roll substantially better at all speeds and seem to behave differently in general (i.e. the Spit V seems to roll far better to the left than to the right, but the Spit IX and Spit XIV don't seem so clear-cut). Your comments on the incomplete roll rate data cleared that discrepancy up.

 That seems an illusion too.

 I've tested all Spits at 10k at  200, 300, 400mph IAS.


Type:  200mph(IAS) : 300 : 400

Spit5: 3.4 : 4 : 9
Spit9: 3 : 4 : 8
Spit14: 2.3 : 3 : 7

 The mark5 and 9 rolled a faster to its left. The 14 rolled to its right. The factor of difference was about 1 second difference. This difference in roll rate increased when the speed went over 350mph IAS - at 400mph IAS, the mark5 rolled about 1.5 second slower to its left, mark9 also about 1.5 seconds, and the mark14 full 2 seconds slower to its right.

 Also, when WEP was engaged, it enabled the mark5 and 9 to roll about 0.5 seconds faster to its left, and about the same amount slower to its right. The Spit14 was about 0.7 seconds faster/slower to its right/left.

[Dead Man Flying]

Nice work, Kweassa!  Now go do it for the other planes and report back.  

-- Todd/Leviathn

[Xjazz]

Hello,

Spitfire Mk V topic in SimHQ's FB-forum.

There is also neat roll-rate chart. Look that that cliped wing Spit V