RE: Full scale hovering
 

I also gotta wonder what nitrous or forced induction (turbo/super chargers) could do for these planes. I've got to imagine that whoever develops the planes has considered the possiblities, i wonder why they haven't done it.

RE: Full scale hovering
 

Extra weight?

If the Nos blows up your car engine you just roll to a standstill and get out. Not quite so simple in a plane mid hover.................

RE: Full scale hovering
 

I think the flat 6 engines the edges and pitts use are already Turbo Charged

RE: Full scale hovering
 

Thats it, if they are that cheap Ill take 2

RE: Full scale hovering
 

if i win the lotto sod the merc, i'm getting me a plane!!

problems with pushing the limits on these planes isn't the plane, if i understand right the new ones can do 20G in both directions, however the pilot can't, and i don't think these guys have G suits.
also where as we can build a plane that excells at hovering thats a huge waste when it comes to full size if they optimised it just for hovering.

RE: Full scale hovering
 

cost of a new Cap 232 is $250,000 flyaway from any US airfield!

RE: Full scale hovering
 

You guys are totally freaking out over these prices! Forget about it! You can buy a Pitts S-1C for $15k!!!

Before his death in a motorcycle accident, Leo Loudenslager was building an aircraft that was intended to have a greater than 1:1 thrust to weight ratio. The airplane now resides in the EAA Museum in Oshkosh, WI. It's called the Shark. I don't have pic, and there's no direct link or info about it on the EAA website.

The issue with nitrous use in aerobatic aircraft is that nitrous would blow these engines apart. They're not build like car engines in that the tolerances are quite loose. These engines are designed for hours of use at 3,000 rpm or less, with very little throttle variation.

The issue with turbo or superchargers is that they add a considerable amount of weight. They also will increase the pressures inside the engine, which again shortens engine life dramatically.

The engines used by today's top aerobatic pilots don't get flown all the way to their 2,000 hour overhauls. They're normally removed and replaced looooong before that time for safety considerations.

Someone else mentioned using a two-stroke engine. It's true that you can get more power to weight with a two-stroke engine, but at the cost of high rpms. In order to keep the propeller within an effecient operating range, you'd have to run a gearbox of some sort. Again, the added weight negates the benefit.

Which leads to another problem... Prop diameter. The bigger the prop, the longer the landing gear. The longer the landing gear, the higher the weight...

Oh, and I do believe that the Turbo Raven was a highly modified Giles G-200. I could be wrong about that, though.

There's no doubt in my mind that someone will be on the airshow scene in the future with a piston-powered airplane that is truly able to hold a hover. It's only a matter of time.

-Wayne

RE: Full scale hovering
 

Will curtis Can already do it with his blue Sukhoi;)

RE: Full scale hovering
 

which is now red

RE: Full scale hovering
 

I thought that one ended up over the race track at indianpolis?

RE: Full scale hovering
 

Hey Guys,

Here is the "Shark" you are describing... aka "The Ugliest Plane ever produced"... It might have a great power to weight ratio but I would be too embarrassed to bring it out of the hanger. This has the same Turboprop engine as the Turbo Raven. It does have enough power to weight to hover...

Ray

RE: Full scale hovering
 

no plane is ugly, just not possible;)

RE: Full scale hovering
 

I love that plane, so pretty.

RE: Full scale hovering
 

looks like a Sukoi was the doner.. could have done a bit more with the nose shape.
it's no Raven tho.

RE: Full scale hovering
 

You need more practise with photoshop:D

RE: Full scale hovering
 

N925WB, probably 15k for a pitts, but then that is a 50 year old design and they come in many different versions with different engines. The extra's etc are highly teched machines made from latest composite techniques etc and cost a fortune.

RE: Full scale hovering
 

There is a vid on 3dbatix site of sean tucker flying his pitts challanger about 3/4 through this killer vid he hovers it and then if you watch the clouds when the crowd cheers you can see hes sliding backwards:D
http://www.10374.com/3dbatix/images/...seantucker.wmv[/link]

actually its tork rolling too but he is pulling some Gs through the whole vid

RE: Full scale hovering
 

Doesn't the Yak-54 have a 9 cylinder super charged radial? I thought the sukhoi did also? BTW In fly r/c's last issue at the begigining of the yak review the author states he saw one for sale for 125,000!

RE: Full scale hovering
 

http://www.bulldogairshows.com/video...ng_harrier.mpg
Its not hovering but a nice torque roll. I know Jim Leroy has been mentioned a few times but I figured I would throw this and a link to his site www.bulldogairshows.com in. He used to practice where I fly r/c in Tracy, California. It was awesome to watch him practice his show. This guy is truly insane!!!!!!!! What a great pilot.

RE: Full scale hovering
 

Better late than never.
the pic in post 17 is of an rc plane model not the full size plane

RE: Full scale hovering
 

Think you may be wrong there Brad, big propellor if it is a Model, and also comes from the Kirkby website, and I've also seen a video of him doing it!!

RE: Full scale hovering
 

Hey BradA,

That is definitely Kirby Chambliss doing the real thing. We just had our full scale air show in October and he did it a number of times right over the runway. He can hold his "Cobra" for a good 8-10 seconds before he has to level off and fly away. If you go to his website:

www.redbulledge.com

you can see for yourself. He has a number of videos on there. Also, I just attended the International Council of Air Show convention in Las Vegas this month and Kirby and Sean Tucker both said they are working real hard at adding more "3D" flying to their acts. Like someone had mentioned earlier in this thread that it is just a matter of time...

Ray

RE: Full scale hovering
 

Kirby is such a cool guy... We had a blast with him at the Full Scale Air Show. This was the first year that I was able to convince the air show committee to include an R/C act in the show. It was a AWESOME success!!! They said they wouldn't have another show without us. We had one full hour of R/C flying. We had the Texas heatwave out of Dallas fly with us as well as a number of acts from our local club. Our finale was our good buddy, Blaine Austin. He did a great job. Kirby and Blaine hit it off really good. Kirby was very interested in talking to Blaine about learning some new 3-D stuff to add to his act. Can you believe Kirby wanted to set Blaine's 50% Edge on his wing!! That was so cool...

Ray

RE: Full scale hovering
 

Hello,

Leo Loudenslager's SHark was mentioned, heres a pic.

C:D

RE: Full scale hovering
 

that planes the one with all moving surfaces with 3D movments on it:D