Happy to see you here talking about the 109 FM, Brain.
OK, let's take a good start. DT is obviously more open minded about FMs and DMs issue that Oleg lately, and I'm sure that with good quotations and arguments, it will be possible to fix the issues that we've seen for the last years on the 109. The KI61 thread linked by another forum user comes to my mind.
Now, for DT, I would politely ask you about one thing to do about the 109s FMs : Can you verify if some datas where not misused when the 109's FM was "fixed" with 4.04 ?
The issue 109 pilots obviously face is that the elevator becomes concrete at higher speeds than 350 kph. It's contestable that this speed is very low to have a concrete elevator, but here is not my point. It seems that the speed taken to make concrete elevator was TAS and not IAS as it should be. With this possible mistake, the 109 keeps being relatively manoeuvrable at low to mid altitudes, but becomes uncontrolable at high altitude.
Over 7000 m, the 109's elevator don't respond at all anymore when you have around 220 kph indicated in IAS. In fact (and I could test it extensively), the Bf110G2 is better in manoeuvrability than the 109K at speeds above 250 kph at that altitude (from my POV, but I flew the 110G2 extensively the last years).
I'm sure Brain, that has a large collection of documents about various 109s will be able to deliver you the documents he has about the aircraft in a structured manner, but could you please check that first issue first ? (mixing between IAS and TAS for locking of the elevators at high altitudes) ?
Thank you very much.
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