RV Turbine rendering...

aparchment · Post by **aparchment** » Tue Jan 09, 2007 6:28 pm

And much bigger . . . yeah, definitely bigger.

LooseNut wrote:I think the exhaust would be much closer to the spinner ...

cjensen · Post by **cjensen** » Tue Jan 09, 2007 8:12 pm

captain_john wrote:Looks like a skinny bumble bee now!

CJ

Well, I guess I should have made the black stripe look like jagged angles like on Charlie Brown's shirt to really make the point...

I thought it was funny!

cjensen · Post by **cjensen** » Tue Jan 09, 2007 8:20 pm

aparchment wrote:And much bigger . . . yeah, definitely bigger.

LooseNut wrote:I think the exhaust would be much closer to the spinner ...

Actually guys...this is not set up like the commonly known PT6 that uses reverse induction. The PT6 does exhaust forward.

The Innodyn is more like the Garrett turbine. This is the RV-8 in Colorado that already has the Innodyn installed and flown...

My placement of the exhaust stack is right where it should be, and it's just about right size-wise as well.

Remember, this is a little baby turbine putting out 165-255hp...everything is smaller. We're all used to seeing the exhaust stacks on 800shp King Air's and TBM's and such. They NEED bigger stacks to get rid of all the air they're sucking and blowing.

This is the original install. The air intake NACA ducts where not sufficient, so he changed it to the first picture.

1:1_Scale · Post by **1:1_Scale** » Tue Jan 09, 2007 11:00 pm

I KNEW it needed a scoop!

I say if you're gonna go with a turbine, might as well use a tried and tested PT6 or Walter- then you can hit the airshow circuit!

cjensen · Post by **cjensen** » Tue Jan 09, 2007 11:14 pm

Yeah, but the PT6 and Walter have too much power, and burn too much gas. The lowest powered PT6 is something like 500shp, and the Walter they put on the Lancair's are 750shp. Something closer would be the Allison 250 that puts out between 315 and 420hp...still too much.

The Innodyn is the only one that will work for the RV airframe.

1:1_Scale · Post by **1:1_Scale** » Tue Jan 09, 2007 11:17 pm

I was thinking along the lines of "too much is just enough"

cjensen · Post by **cjensen** » Tue Jan 09, 2007 11:18 pm

Well, thinking along those lines...I see your point!

Leighton · Post by **Leighton** » Wed Jan 10, 2007 2:39 am

"The Oracle Turbo Raven, powered by a 750 HP Pratt & Whitney PT6A-25C, was the first airshow airplane to have a positive thrust-to-weight ratio. With a performance weight of 1,900 pounds and 2,800 pounds of thrust, the Turbo Raven could climb straight up, stop in the vertical line, and then accelerate straight up again."

P.S. That RV8T is one horny looking Arr Vee.

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captain_john · Post by **captain_john** » Wed Jan 10, 2007 6:46 am

Now THAT'S COOL!

CJ

Leighton · Post by **Leighton** » Wed Jan 10, 2007 7:44 am

Pretty sexy airplane huh?

I rekon a PT6 could be made to fit an RV. Or at least an Alison C250... I rekon a flat rated 317hp turbine would be just about right...

CJ?

smithhb · Post by **smithhb** » Wed Jan 10, 2007 9:44 am

Leighton wrote:"The Oracle Turbo Raven, powered by a 750 HP Pratt & Whitney PT6A-25C, was the first airshow airplane to have a positive thrust-to-weight ratio. With a performance weight of 1,900 pounds and 2,800 pounds of thrust, the Turbo Raven could climb straight up, stop in the vertical line, and then accelerate straight up again."

Can anyone say "Right rudder?"

cjensen · Post by **cjensen** » Wed Jan 10, 2007 11:07 am

Leighton wrote:Pretty sexy airplane huh?

I rekon a PT6 could be made to fit an RV. Or at least an Alison C250... I rekon a flat rated 317hp turbine would be just about right...

CJ?

Uh...YEAH!! I never had a chance to see the Raven perform. Didn't it crash at a show?

I'm sure a PT6 or Allison could be made to fit, but you'd be messin' with the recommended max power, VNE, and weight...

captain_john · Post by **captain_john** » Wed Jan 10, 2007 2:18 pm

Right RUDDAH!

...that's the Boston dialect!

CJ

1:1_Scale · Post by **1:1_Scale** » Wed Jan 10, 2007 4:11 pm

That's kind of what I was thinking

I got the chance to talk with Wayne a little about a year and a half ago, and he told me about the crash (which I have since seen on TV on one of the shows on the Spike network). He's now 3" shorter due to pancakeing in and compressing his spine

Watching the vid of the crash though, I think he did an amazing job of keeping the plane from nosing in and/or dropping a wing- you could see him working all the control surfaces! He crashed it exactly one year to the day after the first flight

I've never been able to find any video of his performances online either

N258RE · Post by **N258RE** » Wed Jan 10, 2007 9:05 pm

video of the crash :

http://video.google.com/videoplay?docid ... urbo+Raven

cjensen · Post by **cjensen** » Wed Jan 10, 2007 10:25 pm

When did that happen? I'd like to look up the report...

captain_john · Post by **captain_john** » Wed Jan 10, 2007 10:45 pm

WOW!

That is all I can say!

CJ

1:1_Scale · Post by **1:1_Scale** » Wed Jan 10, 2007 10:46 pm

October 3, 1999. http://www.waynehandley.com/archive.html

cjensen · Post by **cjensen** » Wed Jan 10, 2007 10:59 pm

Thanks Kelly!

Here's the link to the NTSB report-

http://www.ntsb.gov/ntsb/brief2.asp?ev_ ... 003&akey=1

1:1_Scale · Post by **1:1_Scale** » Wed Jan 10, 2007 11:14 pm

Interesting....so they think the engine was producing power at impact, and the propeller had plenty of pitch....

Maybe the engine started to spool just before impact? That thing looked to have enough power to fly on prop and elevator alone, even if the wing was stalled, if the engine and prop were working properly

RivetBangers.com

RV Turbine rendering...

size matters

Re: size matters

More is better!

Re: More is better!