2-blade propellers show four blurred blades

[Jack McCoy]

DCS-MT version 2.9.4.53627 . This issue probably affects propellers with any number of blades but is most noticeable with 2-blade propellers.

Steps to reproduce:

- Start DCS MT in VR

- Look at a running Yak-52 (2-blade model) from the front, outside

- Pause the simulator

- Close one eye, then the other, and notice the propeller in the two views are 90 degrees out of phase.

This is very confusing for the brain, simulation paused or running...

For my mod, I currently specify 4 blades as workaround. The phase issue is still there but at least both eyes see the same image.

MyAircraft.lua
engine =
{
    prop_locations    = {{2.11219, -0.702867, 0.00}, {0, 0, math.rad(-4.7)}}, -- forward..back, down..up, left..right, rotation roll, yaw, pitch
    prop_blades_count = 4,

Edited May 5, 2024 by Jack McCoy

[Flappie]

Thanks for the heads up.

• The issue is clearly visible in the Yak-52 and the I-16 (2-blade), as well as in the Bf-109 and the Fw190 (3-blade).
• I could not spot the issue in the Spitfire, the P-51 and the P-47 (4-blade).
• Strangely, I could not spot the issue with the Mi-24 either (5-blade), nor with the Huey (2-blade). Maybe helicopter blades are simulated differently.

Issue reported.