look - new heliplane concept ....
Thread Starter
Joined: May 2007
Posts: 23
Likes: 0
From: Latvia
look - new heliplane concept ....
Challis Heliplane | The World's Fastest Rotorcraft Helicopter | 300+ MPH Heliplane
.. if it really will work - I would like to have one..
.. if it really will work - I would like to have one..
Joined: Aug 2007
Posts: 66
Likes: 1
From: Sarver PA USA 40.711 N X 79.7749 W
I thought I had seen this concept before........................
Lockheed XH-51A Compound helicopter - development history, photos, technical data
RJ
Lockheed XH-51A Compound helicopter - development history, photos, technical data
RJ
Joined: Dec 2001
Posts: 1,835
Likes: 3
From: Philadelphia PA
Someone is smoking some high quality stuff...
There is a ton of stuff that needs to be done to get this into the public skies. Certification of UAVs is not yet sorted out by any country, and that is going to be a huge hurdle.
I'll add this to my list of 'Flights of Fancy'.
There is a ton of stuff that needs to be done to get this into the public skies. Certification of UAVs is not yet sorted out by any country, and that is going to be a huge hurdle.
I'll add this to my list of 'Flights of Fancy'.
Joined: Jul 2007
Posts: 197
Likes: 0
From: England
Lol, yeah, you can see them now.... Strolling into the white house... Model in one hand transmitter in the other.....
Mr President I give to you.... the future!
And as for RJ's post, I think if Lockheed couldnt make it successful how the hell are 4 guys in a garden shed gonna manage.... lol
Mr President I give to you.... the future!
And as for RJ's post, I think if Lockheed couldnt make it successful how the hell are 4 guys in a garden shed gonna manage.... lol
Joined: Jul 2007
Posts: 197
Likes: 0
From: England
The thing is they dont just want it to be a UAV....
they think this is going to
(a) Be full size
(b) knock the V22 off the militarys list
(c) fly the president....
(d) build one as bigg as the mil-26 and carry 150 px and
(e) LOL, get certification BEFORE Bell/Agusta's 609??!!
And they have what a model helicopter with a prop stuck on the front?
As said, someone HAS to be smoking some high quality stuff......
they think this is going to
(a) Be full size
(b) knock the V22 off the militarys list
(c) fly the president....
(d) build one as bigg as the mil-26 and carry 150 px and
(e) LOL, get certification BEFORE Bell/Agusta's 609??!!
And they have what a model helicopter with a prop stuck on the front?
As said, someone HAS to be smoking some high quality stuff......
Joined: Aug 2007
Posts: 66
Likes: 1
From: Sarver PA USA 40.711 N X 79.7749 W
And Lockheed® did advance things one step further.......with difficulty. 
Lockheed AH-56 "Cheyenne" helicopter - development history, photos, technical data
RJ
Lockheed AH-56 "Cheyenne" helicopter - development history, photos, technical data
RJ
Joined: Sep 2006
Posts: 1,631
Likes: 0
From: Los Angeles, USA
But even if that little stub wing would solve the retreating blade stall problem, what about the advancing blade approaching transonic speeds? Huge amounts of drag will be produced there.
I've never understood this whole obsession with getting choppers to go so fast. It's not what it was designed for. And if you do have a need for both high speed and vertical take-off, then you can always put your name on the list for a BA609 Tiltrotor.
I've never understood this whole obsession with getting choppers to go so fast. It's not what it was designed for. And if you do have a need for both high speed and vertical take-off, then you can always put your name on the list for a BA609 Tiltrotor.
Joined: Jul 2007
Posts: 197
Likes: 0
From: England
I agree, choppers should be choppers....
If theres that much need for VTOL and High speed, why don't they make a big px harrier design? It's not a new design, if they can get it to work all them years ago, well with all the technologies and advance materials they have now there must be a market for it.....
I.e make a VTOL px (or troop) carrying jet, leave the helicopter alone
yeah, that would work, airbus with thrust vectoring, interesting.......
If theres that much need for VTOL and High speed, why don't they make a big px harrier design? It's not a new design, if they can get it to work all them years ago, well with all the technologies and advance materials they have now there must be a market for it.....
I.e make a VTOL px (or troop) carrying jet, leave the helicopter alone
yeah, that would work, airbus with thrust vectoring, interesting.......
Joined: Mar 2008
Posts: 582
Likes: 1
From: Where I'm pointing...
Been done before...
Fairey Rotodyne
YouTube - Fairey Rotodyne
and
Groenbrothers Gyrodyne...
(e.g. C130 tipjet - though not sure this ever got anywhere)
Military Applications of the Gyrodyne
Fairey Rotodyne
YouTube - Fairey Rotodyne
and
Groenbrothers Gyrodyne...
(e.g. C130 tipjet - though not sure this ever got anywhere)
Military Applications of the Gyrodyne
Joined: Aug 2007
Posts: 278
Likes: 0
From: USA
I.e make a VTOL px (or troop) carrying jet, leave the helicopter alone
Dornier Do 31 - Wikipedia, the free encyclopedia
Joined: Apr 2006
Posts: 102
Likes: 0
From: Just three steps from the sunrise
What about this Spanish version?
YouTube - Heligirocast (Spanish)
Will it take over as training helicopter?
YouTube - Heligirocast (Spanish)
Will it take over as training helicopter?
Joined: Nov 2004
Posts: 1,334
Likes: 0
From: Cambridgeshire, UK
Half wing: Looks like another concept in need of a stress engineer!
Either the whole rotor gets unloaded (ie Full wing) or you share the load with a second advancing rotor (ie X2). Anything else puts huge stresses on shaft, bearings, gearbox, mounting system, airframe etc. This translates as extra mass and lost payload or range.
Another flight of fancy...
Either the whole rotor gets unloaded (ie Full wing) or you share the load with a second advancing rotor (ie X2). Anything else puts huge stresses on shaft, bearings, gearbox, mounting system, airframe etc. This translates as extra mass and lost payload or range.
Another flight of fancy...
