Merlin negative G cutout too quick?

[IvanK]

Great work Klem 0.5g was the original FM setting. As suspected the value has never been changed just the cut effects.

I really don't understand this debate. Change your habits pull and don't push... Easy. Damn nobody ask you to turn gay !

I think you are missing the point Tomcat. No one is disputing the phenomena just the onset. The fact is normal every day control inputs like setting up a cruise descent can result in the cutout they didn't in real life for such everyday piloting tasks .... it was referred even back in the day as "Negative G cutout or effect". All we are suggesting is getting the onset values correct.

"Take it as it goes : as soon as your pushing the stick frwd your eng start starving".... No only if you exceed a given threshold G. Stay below that threshold and you should have any 'negative" effects.

[TomcatViP]

Originally Posted by IvanK

Great work Klem 0.5g was the original FM setting. As suspected the value has never been changed just the cut effects.

I really don't understand this debate. Change your habits pull and don't push... Easy. Damn nobody ask you to turn gay !

I think you are missing the point Tomcat. No one is disputing the phenomena just the onset. The fact is normal every day control inputs like setting up a cruise descent can result in the cutout they didn't in real life for such everyday piloting tasks .... it was referred even back in the day as "Negative G cutout or effect". All we are suggesting is getting the onset values correct.

Thx to the doc you have provided, we hve alrdy computed the inner pressure in the carb and the fuel flow and see that the flow is impacted with even a very minor value of neg accel.

That is why the cut out effect start as soon as you are in condition where the load is < 1G. There is no physical delay unless it is very low (the 0.1G value). Of course the effects are marginal (slight rpm decrease). But here they are.

It's wrong to search for a magical number where you wld experienced a transition. It's simply progressive all around the 1G down to 0G load in an asymptotic way (1/x² as it's is a pressure value).

The question is now:

would, if the FM was set to cut out at 0.1g, the acceleration measured ingame at the same place as in RL corresond to 0.1g?

I do not know but I could well imagine that what is shown as 0.5g ingame as acceleration is something different from what was measured during the RL flight trials and might just not correspond to 0.5g in RL.

So perhaps the 0.5g could well correspond to the RL 0.1g case (tbc by devs). At least at this moment we cannot exclude as we do not know how the ingame acceleration is obtained.

Are we also sure that the ingame acceleration given is the acceleration in the symmetrical plane of the aircraft? or just a lateral acceleration hence including side forces?.