Canopy Fun

[jthocker]

In my never ending quest to make Doug's life easier, I present a video of this weekends fun.

http://vimeo.com/11809242

To make my life easier, this link:

http://www.vansairforce.com/communit...ed+ventilation

[kentb]

I assume that the frame rate on the camera is very precise, the perceived changes in the rotation of the prop must be small changes in the RPM of the engine. This must be due to the changes in the pitch of the plane.

Fun to watch and of course great music to go with it.

Kent

[DeltaRomeo]

Doug most certainly appreciates your quest. Great vid.

Originally Posted by jthocker

In my never ending quest to make Doug's life easier, I present a video of this weekends fun.....snip

[panhandler1956]

Jon,
That's very cool indeed! Looked like a blast - no pun intended!

[N8RV]

Nice vid, Jon. I have one question for your consideration, however. On the VAF home page, the intro for this thread stated that the aft canopy does not lift as previously thought, but is compressed.

Ignoring aerodynamic principles of high/low pressure caused by airflow and accepting your premise, how do you explain the phenomenon experienced by just about every RV-8 passenger that gobs of air flows in from that area? If the canopy aft area is actually being compressed and not lifted, it would seem that the seal should improve and that would be the least likely area for air inflow.

Got any hypotheses for us?

[jthocker]

Originally Posted by N8RV

Nice vid, Jon. I have one question for your consideration, however. On the VAF home page, the intro for this thread stated that the aft canopy does not lift as previously thought, but is compressed.

Ignoring aerodynamic principles of high/low pressure caused by airflow and accepting your premise, how do you explain the phenomenon experienced by just about every RV-8 passenger that gobs of air flows in from that area? If the canopy aft area is actually being compressed and not lifted, it would seem that the seal should improve and that would be the least likely area for air inflow.

Got any hypotheses for us?

Don,
It makes my head hurt too much, to try to figure out why the aft canopy area, does not always seal well. I believe there are a couple of factors involved, among those are; temperature( causes the canopy to expand and contract, thus changing the aft shape slightly), and the downward pressure causing the aft area to flatten out (causing the skin to flare away from the turtledeck).
Also, using the incorrect primer during the early stages of construction of the empennage may contribute slightly to the problem.

[rv8bldr]

Originally Posted by jthocker

Don,
...
Also, using the incorrect primer during the early stages of construction of the empennage may contribute slightly to the problem.

ROTF LMAO !!!!

[N8RV]

Originally Posted by jthocker

Don,
It makes my head hurt too much, to try to figure out why the aft canopy area, does not always seal well. I believe there are a couple of factors involved, among those are; temperature( causes the canopy to expand and contract, thus changing the aft shape slightly), and the downward pressure causing the aft area to flatten out (causing the skin to flare away from the turtledeck).
Also, using the incorrect primer during the early stages of construction of the empennage may contribute slightly to the problem.

Fair enough. Just something to chew on.

As for the primer contribution, I've always suspected that as a root cause of some pesky issues that crop up from time to time. Thanks for reminding us all of the hazards of priming ...

[NOTE: For any newbies reading that and wondering, it's a JOKE. The whole primer discussion is only a red herring to divert attention away from the real culprit -- figure-eight holes.]

[Pmerems]

As I was watching the video the flaps were deploying and retracting. Almost like speed brakes. Does this RV-8 have manual flaps? What as the formation speed during the filming?

[prporter]

Originally Posted by jthocker

In my never ending quest to make Doug's life easier, I present a video of this weekends fun.

http://vimeo.com/11809242

To make my life easier, this link:

http://www.vansairforce.com/communit...ed+ventilation

That was SUPER footage. Can you shed some light on your camera/mount?