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Thread: ROLLS-ROYCE CRECY

  1. #81
    Join Date
    Mar 2002
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    Default Re: ROLLS-ROYCE CRECY

    Quote Originally Posted by Exhaustgases View Post
    wow! talk about off topic.
    Yea guys... I usually don't monitor this section of the forum very closely, other than to briefly scan the email digest to watch out for flaming SPAM and such...

    Regular users of this section, please feel free to notify myself or one of the other forum moderators and we'll do our best to keep this sort of thing out of here..

    Don't have time right now to clean this this thread of the BS... hopefully we can have everyone get back on topic.

    Warning... doing stuff repeatedly that annoys the users here can get yer butt deleted... You are warned...OK??? Please!!
    Wayne Sagar
    "Pusher of Electrons"

  2. #82

    Default Re: ROLLS-ROYCE CRECY

    Old ideas in new study:
    This gear drive in a helicopter that is bothering me. Another way to get rid of her. By the way, turned out that the rear propeller and also you can get rid of , because the helicopter does not have the torque of the main propeller.
    The helicopter had already been built. But it had drawbacks: no, for example, could not take full advantage of autorotation, because the propeller with a hole through the center did not have good aerodynamic properties....

    http://en.wikipedia.org/wiki/Sud-Ouest_Djinn

    http://en.wikipedia.org/wiki/File:He..._and_blade.jpg
    I missed this problem and the propeller is as it is most optimal.
    Also today after assuming control of the helicopter adjustable nozzle (vectoring nozzle) on the outlet gases from the turbine driven, will be very precise.

    http://en.wikipedia.org/wiki/Turbomeca_Palouste

    http://upload.wikimedia.org/wikipedi...ne_of_F-35.jpg
    In summary the lack of a gear transmission and rear propeller helicopter will certainly reduce weight.















    Andrew

  3. #83

    Default Re: ROLLS-ROYCE CRECY

    Here PhotoStream proposal, which has improved aerodynamics and a little stiffness to the system add..






    some histo:




    http://www.youtube.com/watch?v=y9633v6U0wo

    http://www.new4stroke.com/percival.pdf

    http://www.new4stroke.com/AIAA-Presentation.pdf

    Originally posted by Chopper
    Welcome back Andrew.

    One day it will fly

    :eureka
    http://tipjet.com/tj_pho_gallry.htm


    Andrew

  4. #84

    Default Re: ROLLS-ROYCE CRECY

    Green Engineering in strongbox bank...
    http://www.youtube.com/watch?v=ZPWH5TlbloU

    Andrew

  5. #85

    Default Re: ROLLS-ROYCE CRECY

    [quote name='Feliks' post='5270845' date='Sep 10 2011, 09:13']Poles at all it goes something like this to tinker with helicopters...

    Andrew :smoking: :smoking:[/quote]

    Is Igor Sikorski, Poland had a soul? Because his father was a Pole, which the Russians took him for taking part in the January Uprising....?

    http://www.frankpiasecki.muzeumlotni...asecki.php?w=a

    http://www.frankpiasecki.muzeumlotni...astula.php?w=a Lynx

    Regards Andrew

  6. #86

    Default Re: ROLLS-ROYCE CRECY


  7. #87

    Default Re: ROLLS-ROYCE CRECY

    If you do not want to lose a large diameter fan operating in the Venturi nozzle, you should use " internal Venturi nozzles ".
    These are just two cones inside a circular tube
    Their convergence must be in accordance with the Bernoulli's principle, just like a normal venturi nozzle. So must be kept laminar flow. But we gain a large diameter fan. Theoretically, the energy gain obtained is 10 times larger in relation to the windmill in a narrow place of the normal venturi nozzle....
    Field cross-sections must be changed in the same function as in classical venturi



    Andrew

  8. #88

    Default Re: ROLLS-ROYCE CRECY

    Wind and water have long been a very liked.
    So I think that such a solution, consistent with their preferences, will be most effective

    It is a Venturi vidmil that drives large enough vane pump with sealing ring via water.
    Thanks to such a seal, which is not consumed, and it is tight, you can use all the energy that gives us a venturi nozzle of the vacuum produced.. Because the turbine does not have any leaks.So theoretically, this will be the most efficient use of wind...

    We can thus take advantage of the vacuum energy, what we get in other ways to obtain it from the wind.

    New "turbine" is Liquid Ring Vaccum Pumps





    http://www.gd-nash.com/uploadedImage...ength%20nl.swf

    http://www.new4stroke.com/2BE4%20CPD%20sheet.pdf

    Regards Andrew

  9. #89

    Default Re: ROLLS-ROYCE CRECY

    Heron's Apache my be need this engine:

    http://pl.wikipedia.org/wiki/Motorjet



    Heron's apache to drive propellers you may use electrically driven motors Motorjet. Then you can harness the power of their relatively high..

    http://www.angelfire.com/art/jetengine/
    http://www.rcgroups.com/forums/attac...hmentid=777461

    Well if he gave such ichyba two engines to the Hero's apache model, it is even quite good size, it could be...

    http://www.rcgroups.com/forums/showt...&pp=15&page=11

    May be person size??
    The first hybrid helicopter??

    Regards Andrew

  10. #90

    Default Re: ROLLS-ROYCE CRECY

    Thanks to the new Heron's Apache we can build a pretty good quality helicopter

    When we begin to design a small personal helicopter similar to this:
    http://rotorfx.com/mosquito_experime...s_for_sale.htm
    We see the need to drive to the main rotor diameter of 18 feet (5.5 meter)
    We see the need to drive to the main rotor diameter of 18 feet (5.5 meter) and 540 rpm rotational speeds. To achieve such a speed we could use a torque 800 Nm ( ~ 80 kgm ).
    Returning now to the Hero 's Apache, we can assume that the torque on the main propeller tubes produce more than us four propeller.
    Let's say that in May they long 3.5 feet (1 meter ). So, as at the end of each of those tubes you put the engine that gives us a sequence of 10 N (2 Lbs) values ??(1kg) it will be added to the rotor torque of 10 Nm (1 kgm)
    So four of these tubes with motors will give us a 40 Nm (4 kgm).
    Now, assuming that our helicopter will be lighter with a big motor, gears and tail rotor, we can assume that he will need to drive only the main rotor diameter of 600 Nm at, say, 16 feet (4.9 m).
    So if we placed the total at the end of the tube Heron's Apache silnki of values ??within 600/40 = 15
    15 X 2 lbs = 30 lbs of force within, we get has fully functional helicopter....
    As it turns out, these motors have already modelers....
    http://www.wrenturbines.co.uk/media/...structions.pdf
    Weight engines 8 Kg (14 Lbs)....
    http://wn.com/jetkart 10 position video
    If you want to build a crane helicopter, use these eight:
    http://www.youtube.com/watch?v=JE4t-o7XY6M :tsk
    http://www.vortechinternational.com/review.html
    http://www.jetcentral.com.mx/english/mammoth.html

    Or a combination of hybrid electric..
    http://www.youtube.com/watch?v=6DNOk5hXD60&noredirect=1
    http://www.youtube.com/watch?v=tEpbj...d&noredirect=1
    http://www.rcgroups.com/forums/attac...hmentid=777461
    Or Only electric:
    http://www.youtube.com/user/HansThunderbolt
    40 pcs enought..~~ 40 KW and ful personal electric helicopter

    So it happens that good fun can become a good professional...

    Regards Andrew

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