Aft Wheels Braking Power (and suspension)

[Renko]

I was testing one thing of the DCS Chinook that i was suspicious about. The braking force of the Chinnok wheels.
Because i was experiencing some slipping that i though it was extrange. When the Chinook is on the two Aft Wheels.

So in the track i have the Chinook at 100%Fuel (Max weight for DCS editor), parking brake set for maximun brake force. I put around 30 TQ and almost 4in.aft on the cyclic, to move the Chinook to that two wheel position with the minimun ammount of collective. To have as much weight posible on rear wheels.
And at around 15-17º pitch up it starts to slip backwards, on a runway.
LCT are still on GND with WoW active, the contact with the ground is good.
So one of these two, the brakes or the wheels, cannot hold in place the Chinook.

I asked a Chinook pilot for his help and he confirmed this suspicions.
I will quote him without naming him, just because i dont want any missinterpretation on my part:
"Hmmmm, honestly that's a tough one. Irl, most of these brakes are pretty worn and may not be strong enough to hold the aircraft in place with that much aft cyclic and power in. But in DCS, just assume that the aircraft is always brand new from the factory i guess.... I've noticed on Pinnacles in DCS that the brakes often seem week, and this would confirm it. The aircraft theoretically SHOULD hold position in DCS, imo. It'd be more likely to come off the ground altogether before it would roll backwards. Not sure on that one. When I'm two wheel taxiing I'm hoping my brakes work well enough to hold her in place."

I noticed looking at real footage something that maybe worth looking to see if its related.
The different behaviour in the rear wheels and suspension.
You can see here how the rear is much more compressed in similar conditions in the real life footage, so maybe there lays the issue in DCS.
Not the force of the brakes but because the weight distrubution when the Chinook pitchs up.

(Real life video >>

)

 

I think there is enough information to at least take a look on this issue.
This is important for this airframe.

Regards!

Chinook_Aft_Wheel_Issue.trk

Edited 23 hours ago by Renko

[Cyborg71]

Agreed.

I've experienced similar. I'm prepared to accept mine is likely a skill issue, but yes.

Holding nose up at and trimmed at 10°, w on w, brakes full on, and yet, a gentle backwards roll. I am using the minimum collective required to maintain that position

I wonder if the upcoming "hover/position hold" is something that is or could be used in this instance to aid in holding those positions. I've no idea how that's used or implemented. Irl hook pilots will tell me either way hopefully.

Currently, pinnacles are the work of a stick magician. I am not that.

Cheers.