What is concerning is the response received: “The engine model contradicts the P.I.1A-MB326K-1 Flight Manual MB-326K. However, it is accepted as a suggestion due to the sufficient number of sources. Thanks for the report.”
Relevant information on this matter has already been provided (attached extract).
However, I believe it is important to clarify that the manual P.I.1A-MB326K-1 refers to the MB.326KC, which was the version exported to South Africa (AKA the Atlas Impala).
As that country was under embargo, it could not receive the updated engine. Therefore, this seems to be incontrovertible proof of an incorrect implementation that should be corrected as soon as possible.
The model featured in the game is the 326 K – RS-25 mm, registration MM54391, construction number (C/N or MSN) 6478/219, powered by a Viper 632 engine.
The manual for this specific aircraft is not publicly available, and secondary sources have already been provided. However, manuals for the KD (Dubai) and KT (Tunisia) variants can be found online and purchased for a small fee if needed.
PS the name of the manual in the answer isn’t even correct as far as I understand, missing “C” letter, so our sources don’t really contradict with anything, since the manual is for another variant.
If you have manual, maybe provide it to @Smin1080p_WT via PM, as I understand the actual problem is similar to Re.2005 VDM, they lack data, like performance tables/graphics to make flight model with correct engine.
At least I think it would be the best way, I’m sure Smin can help us to attach this manual to existing bug report and provide information to devs.
@paolgand1975-psn Does the KD/KB manual happen to have the performance data attached to it for the plane as well? Such as engine thrust and speed charts?
I have a feeling the 632 engine is underperforming in thrust on dev currently (it is only making 1680kgf) but I cant find any good primary sources and only have one secondary source right now.
All the sites I find online say 1810 kgf but I cannot find the RR Viper 632 engine manual anywhere.
I haven’t checked the dev server yet — you can open a bug report, or if you’d be so kind as to send me a picture of the actual model on the dev server, I’ll file the report myself.
Hi, I made a report using a picture I found on the internet.
Please support me — I’d like to correct the report with the proper picture.
If you can send it to me, I’d be very happy.
Thank you for your help and support!
This is the engine stand thrust, while the game indicates the engine thrust taking into account losses in the channel. Not a bug.
After checking the numbers, the difference between the manual value (4,000 lb = 1,815 kgf) and the in-game value (1,680 kgf) corresponds to about a 7.4 % thrust loss. (5%-10%)
This is consistent with typical installation losses due to intake and channel effects. Therefore, the explanation provided (“losses in the channel”) is plausible and correct.
I saw the report got closed, that’s good to know that the thrust is now correct.
I’m quite looking foward to playing this when the patch hits the live server :D
It keeps getting buffed, I really hope it doesnt go up in BR. Italy needs a plane at 6.7/7.0 badly. Maybe it can get some FM nerfs such as compressibility?
