FM's the State of Play with empasis on Climb performance.

[IvanK]

Reducing IAS climb schedules were used in all the climb tests as per source documentation.

Here is the source data used for the Spit II climb. IAS is in actuality in MPH not KNOTS The line under knots is actually a misaligned strikeout line that should be going through the KNOTS label ... as it does on all other pages of the document. Given the test was only done to 16,000ft the IAS reduction was only in the order of 5 MPH and then only in the later portion of the test climb.



As reported previously based on timed climb segments the VSI on the Spitfire and Hurricane is over reading by around 500fpm.

[SEE]

Many thanks IvanK, I have the utmost respect for you and the tests you carried out - I hope that your assessment of the beta FM has been passed on to the devs (if not already noted by them).

[Crumpp]

What is the weight of the airplanes in the game and those in the flight test's?

[ATAG_Snapper]

Originally Posted by SEE

Many thanks IvanK, I have the utmost respect for you and the tests you carried out - I hope that your assessment of the beta FM has been passed on to the devs (if not already noted by them).

+1

[IvanK]

The flight tests were done at mission weights as close as possible to the source documentation. In the case of the Spitfire II the weight was 2766Kg 6097Lb as reported by the game. So the CLOD Spit was 75Lbs start weight less than the RAE Test data.

[Seadog]

This appears to be a summary of the same test:

[Crumpp]

Crumpp and the RR Merlin:

"THAT IS WHY YOU HAVE PILOT ANECDOTES OF FLYING AT +16 LBS ON 87 OCTANE!"

Seadog....

Read, it is from your own post:



http://forum.1cpublishing.eu/showpos...postcount=1696

[Crumpp]

The flight tests were done at mission weights as close as possible to the source documentation.

Ok as close as possible is not exact.

ROC = Excess POWER / weight

The difference in weight will produce a proportional difference in climb rate. If you are 1% off in weight you will see a 1% increase in climb rate.

[IvanK]

Of course its not exact but the trouble is within the limits of the Sim you cant always physically get the actual weight !! That is the case with the Spitfire.

Crumpp in post #14 YOU stated "The Relative performance is about right and it looks like people are nitpicking IMHO" !!.

The closest I could get to the correct weight was 75Lbs LESS than that used in the RAE test. If you actually look at the test you would see that with the CLOD Spit at 75Lbs less weight its still under performing by a considerable margin. So who is nitpicking now ?

[Seadog]

Originally Posted by Crumpp

Seadog....

Read, it is from your own post:

There's nothing in that excerpt that states the engine could run at 16lb boost on 87 octane fuel...in fact there's nothing about 87 octane in it at all.