The Osprey After Five Years
Join Date: Feb 2009
Location: Waiting to return to the Loire.
Age: 54
Posts: 386
Likes: 0
Received 0 Likes
on
0 Posts
An interesting overview article. It is almost a PR advert. I wold like to see something with some evidence of any areas of weakness - otherwise it seems that it is still doomed to succeed.
But, if it is that good - then well played to the team that had the imagination! Determination and funding to pull it off. Particularly the field testing part of the programme.
It seems funny to think that it is five years already.
But, if it is that good - then well played to the team that had the imagination! Determination and funding to pull it off. Particularly the field testing part of the programme.
It seems funny to think that it is five years already.
Join Date: Aug 2012
Location: Hassocks, Mid-Sussex
Age: 67
Posts: 278
Likes: 0
Received 0 Likes
on
0 Posts
In my view the increase in speed (still gained over relatively short distances) does not warrant the increase in acquisition and operating costs against a comparable size conventional helicopter.
Better cruising speeds are needed for sure - but not at any price.
Better cruising speeds are needed for sure - but not at any price.
if only
What could this have achieved with 50 years of development?
Fairey Rotodyne - Wikipedia, the free encyclopedia
Fairey Rotodyne - Wikipedia, the free encyclopedia
There is a very long standing thread on the Osprey at Rotorheads Forum. Save some time and take a read of the posts there.
Join Date: Jun 2007
Location: Hampshire
Age: 49
Posts: 10
Likes: 0
Received 0 Likes
on
0 Posts
SASless
Quick summary? Chinook cheaper and just about does the job.
There is a very long standing thread on the Osprey at Rotorheads Forum. Save some time and take a read of the posts there.
Chinook not an option, if you bother to go back twenty years to the great thrash over how to replace the Sea Knight, which some call the "baby Chinook."
Shipboard deployable and deck spotting multiple a factor.
Thanks for playing.
Shipboard deployable and deck spotting multiple a factor.
Thanks for playing.
Looking forward to seeing a few more in the UK next year....a squadron's worth being based in East Anglia!
Originally Posted by dead_pan
...although my immediate thought was what would happen in the event of an engine failure. Presumably no prospect of unpowered flight/autorotation?
In any case, a single engine failure - like e.g. the CH-47 - is catered for by cross shafts, meaning that each nacelle powers both rotors via the transmission system.
Last edited by BossEyed; 28th Aug 2012 at 21:58.
The Rotodyne's noise issues were almost cured by the time the plug was pulled on the programme. Another promising British 'Project Cancelled'....
A similar concept was featured in the Breguet 941 STOL aeroplane:
Each of the 4 free turbine engines drove an independent shaft which was connected to a master shaft which was connected to all 4 propellers.
With this concept, the power of the engines was distributed uniformly to all the propellers. Thus if an engine failed, its turbine was isolated but the corresponding propeller kept on rotating at the same speed as the other 3.
In any case, a single engine failure - like e.g. the CH-47 - is catered for by cross shafts, meaning that each nacelle powers both rotors via the transmission system.
Each of the 4 free turbine engines drove an independent shaft which was connected to a master shaft which was connected to all 4 propellers.
With this concept, the power of the engines was distributed uniformly to all the propellers. Thus if an engine failed, its turbine was isolated but the corresponding propeller kept on rotating at the same speed as the other 3.
Join Date: Aug 2012
Location: on the beach
Posts: 359
Likes: 0
Received 0 Likes
on
0 Posts
BEagle
This pic shows the interconnecting shafts and speeds of rotation. Interesting to note that inboard props rotate toward fuselage and outboard ones away from fuselage.
This pic shows the interconnecting shafts and speeds of rotation. Interesting to note that inboard props rotate toward fuselage and outboard ones away from fuselage.
Last edited by mike-wsm; 29th Aug 2012 at 05:42. Reason: dropped one
Join Date: Aug 2012
Location: on the beach
Posts: 359
Likes: 0
Received 0 Likes
on
0 Posts
Willard Whyte - That's a model of the Fa269 from Alliance Models...
...and here's a similar plane that did fly:
Do29
The Do29 first flew during December 1958. Two Lycoming GO-480, cross-linked. Take off in 80 feet, landing in 50 feet.
...and here's a similar plane that did fly:
Do29
The Do29 first flew during December 1958. Two Lycoming GO-480, cross-linked. Take off in 80 feet, landing in 50 feet.
Last edited by mike-wsm; 29th Aug 2012 at 05:54. Reason: dropped another one
Join Date: Aug 2012
Location: on the beach
Posts: 359
Likes: 0
Received 0 Likes
on
0 Posts
Try these, folks - Curtis-Wright X-100 and X-19, Doak 16, Bell X-22A, Nord 500, Vertol 76 or VZ-2, Hiller X-18, LTV-Hiller-Ryan XC-142, Canadair CL-84 Dynavert (that should wake up Slasher), Ryan VZ-3 Vertiplane, Fairchild VZ-5 Fledgling, and the already cited Breguet 940 Integral, 941, and 941S or McDonnel 188.
Join Date: Dec 2004
Location: Beyond the Blue Horizon
Posts: 54
Likes: 0
Received 0 Likes
on
0 Posts
Bell-Boeing showed this slide at Farnborough, giving their lineage for the V-22. There are more of these things than you can shake a cyclic at - but what on Earth was the Baynes Heliplane?
JT
Tiltrotor history | Flickr - Photo Sharing!
JT
Tiltrotor history | Flickr - Photo Sharing!
Join Date: Apr 2008
Location: The Whyte House
Age: 95
Posts: 1,966
Likes: 0
Received 0 Likes
on
0 Posts
I rather prefer this conceptual art of the Heliplane.
Hope it's not of wood and fabric construction...
Anyhoo, good of Bell-Boeing to acknowledge Baynes' contribution, although it was patented, allegedly, so they probably had to.
Hope it's not of wood and fabric construction...
Anyhoo, good of Bell-Boeing to acknowledge Baynes' contribution, although it was patented, allegedly, so they probably had to.
Last edited by Willard Whyte; 29th Aug 2012 at 10:14.
Join Date: Aug 2012
Location: on the beach
Posts: 359
Likes: 0
Received 0 Likes
on
0 Posts
Interesting!
Additional comment and pics of model here:
Westland Weka ASR
First three paragraphs plus pics.
Patent October 1938:
GB Patent 493439 - Improvements in or relating to aircraft
.
Additional comment and pics of model here:
Westland Weka ASR
First three paragraphs plus pics.
Patent October 1938:
GB Patent 493439 - Improvements in or relating to aircraft
.
Last edited by mike-wsm; 29th Aug 2012 at 11:09. Reason: add patent