correct as-is Video of cowl flaps opening and closing fully literally within one second, in DCS closer to 9-10 sec

[-0303-]

Takes closer to 9-10 sec in DCS.

http://fighter-collection.com/cft/p-47g/

 

Also video lowers flaps in 4 sec. DCS 3 sec, close enough given less than exact stop watching ...

Edited December 27, 2020 by -0303-

[NineLine]

Interesting, will talk to Nick about that, I assumed it was motorized or hydraulic, that looks more mechanical, like a simple push and pull. Thanks.

[NineLine]

We believe its correct as is, Nick has had experience in a D, and remembers their movement like shown, they are controlled by hydraulic actuated cylinders and push rods.

 

In this vid you can see them move more like we have:

 

[Art-J]

On 12/27/2020 at 9:04 PM, NineLine said:

We believe its correct as is, Nick has had experience in a D, and remembers their movement like shown, they are controlled by hydraulic actuated cylinders and push rods.

 

In this vid you can see them move more like we have:

 

 

With all due respect to Nick, I suspect it might be particular restored airplane related, or maybe it's a function of how the valve handle is operated by the pilot (squeezed slowly or pushed/pulled fast)?

Here's fragment from "Roaring Glory" I mentioned in the other thread on the same subject (sorry for the phone-quality )

 

 

The plane on the video is P-47D-40-RA N4747P "Tarheel Hal" by the way.

Edited December 28, 2020 by Art-J

[NineLine]

Well he did supply me with an engineers drawing from his lead engineer at the Fighter Collection, perhaps what you see is the results of that particular restoration? Its possible if the hydraulics were different from what one restorer used to the next, you might see some difference, I'm not sure. Anyways, I don't see a advantage or disadvantage either way.

[Art-J]

Working in a company which builds GA aircraft, as a documentation guy, I know tech drawings do not tell about pressures and how fast/slow systems operate. We know these flaps are hydro-operated and that's that, nothing more. 

 

I do get your point though. It's not a deal breaker and I guess we'll just have to leave it at this stage unless some more valuable reference data is available. 

Edited December 30, 2020 by Art-J

[PL_Harpoon]

Just for reference, here's a video from 1943 showing the operation of the cowl flaps:

 

Not sure which variant it is though.

[NineLine]

11 hours ago, Art-J said:

Working in a company which builds GA aircraft, as a documentation guy, I know tech drawings do not tell about pressures and how fast/slow systems operate. We know these flaps are hydro-operated and that's that, nothing more. 

 

I do get your point though. It's not a deal breaker and I guess we'll just have to leave it at this stage unless some more valuable reference data is available. 

 

Yeah I dont mind being wrong, so if we can find something else, I will be happy to pass along to the team.

Thanks!