SNIP....
    >
    > Tilt rotors are the future as they solve a lot of current car
   traffic and
    > airport access problems.
    > --
    > Paul Lamar ...No rotor no motor.
    >

   This forum continues to hold my interest about Rotary engines for flight
   powerplants.... but the extraneous conjectures about anything other
   than the
   rotary engine tweaking causes me to shake my head in disbelief, my
   stomach
   to turn, and sometimes, my mind to marvel at this scientific forum's
   capability to conjecture and solve problems!!

   OK... since we've gone off forum... here's my 2 cents worth!!

   My, my, how we keep reinventing the wheel!!! Maybe we should see how we
   solved this problem in the 1940's and 1950's and determine if
   politics can
   get out of the way of real world scientific progression!!!!

   Fairey Rotodyne... <http://www.youtube.com/watch?v=y9633v6U0wo&NR>
   <http://www.youtube.com/watch?v=y9633v6U0wo&NR>http://www.youtube.com/watch?v=y9633v6U0wo&NR
   <http://www.youtube.com/watch?v=y9633v6U0wo&NR>
   <http://www.youtube.com/watch?v=Pv6Gr2mLo1Y&NR=1>
   <http://www.youtube.com/watch?v=Pv6Gr2mLo1Y&NR=1>http://www.youtube.com/watch?v=Pv6Gr2mLo1Y&NR=1
   <http://www.youtube.com/watch?v=Pv6Gr2mLo1Y&NR=1>
   or here for printed data... <http://www.asra.org.au/rotordyn.htm>
   <http://www.asra.org.au/rotordyn.htm>http://www.asra.org.au/rotordyn.htm

   Hmmm... let's see now... what are the criteria???.....true VTOL, extreme
   KISS technology, Zero energy roll out, almost 200 knot Vne, 40
   passengers,
   clam shell freight loading, SUPER safe landing with engine out
   events... but
   no political backing... ahhhh... there's the real failure point!!

   50 to 60 years ago, other minds created fabulous quantum leap
   solutions to
   our current discourse... as scientists, we can learn from the past, or
   reinvent the wheel...

   My stomach turns whein I see people beat themselves over the head
   reinventing the wheel so much!!!

   I continue to marvel at this forum's capability, and continue to
   find merit
   in the rotary engine's tweaking.... but fixed wing solutions for
   societal
   needs have been quantum leap outdated, since the 1950's!!!!!!

   You guys keep slogging it out, I'll gleen the info I need from the
   rotary
   engine discussions (since this IS a rotary engine for aircraft use
   forum!)... ahhhh... such imaginations!! ... now if the collective
   forum's
   mind was focused on rotary engine tweaking without diversion... hmmmmm!

   ok... now back to the slogging!! (Where's my Tum's delete button??)

   Gary Buster
   Tyler, Texas
   N263GB

   I think you are missing a subtle point Gary. The Rotordyne had the
   same advancing blade
   retreating blade problem as the helicopter. That limits the speed to
   about 200 MPH while a tilt rotor
   has no such limitation and can go 100 MPH or more faster. Lockheed
   Martin is working on a
   even faster tilt rotor than the Boeing-Bell version already going
   over 300 MPH.
   The tilt rotor discussion is on here because the rotary engine's
   high power to weight
   ratio makes an ideal tilt rotor power plant.

   <http://www.rotaryeng.net/VTOL.html>
   <http://www.rotaryeng.net/VTOL.html>http://www.rotaryeng.net/VTOL.html

   Paul Lamar

Greetings All,

Since the topics seem to be including a fair amount of VTOL development
related information and YouTube links, I thought it might be a good
opportunity to include some of my own and, perhaps, stimulate some
discussion and comments pertaining to the AirBike.

http://www.youtube.com/watch?v=DS055N5Jzso>http://www.youtube.com/watch?v=DS055N5Jzso
This model was built in SolidWorks and printed on a rapid prototyper.

I have begun to model full scale components in SW (variable pitch
impeller and counter-rotating shaft gearbox) but I have reached the
point where I need the engine files to proceed further.

<http://geocities.com/alliedaerobiker/>

The original website that now redirects visitors to the new site at _
<http://www.aerobiker.com/>
I haven’t done
much with the new site since it went online but I plan to soon.
Everything I have done thus far has been in an effort to generate
interest in this concept and to raise development capital.

<http://images.google.com/images?hl=en&q=airbike&gbv=2>
A considerable
amount of discussion and comments, from around the globe, can be found
by searching either “AirBike” or “AeroBike”, “VTOL”, “PAV” etc... Some
of the older illustrations can be seen in Google-Images.__

Cheers!

Don… (Aeronaut)

Ducted fans are fine for vertical lift or speeds below 140 MPH.

Moller has been claiming for 30 years that his ducted fan aircraft would
fly at 400 MPH at first and now it is scaled back to 330 MPH or so.
I am sure it will not go much over 140 MPH.
I suspect that is why he has never flown out of hover.

Read these two links for more info on ducted fans.

http://www.rotaryeng.net/PAV.html
http://www.rotaryeng.net/VTOL.html

Wasn't there an Ultra Light aircraft called and Air Bike?