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Thread: ROLLS-ROYCE CRECY

  1. #91

    Default Re: ROLLS-ROYCE CRECY

    Well, maybe but the full electric version:
    These eight electric motors:
    http://shop.rc-electric-jets.com/RC-...DF120-1A83.htm


    Now just: 8 electric motors, ie 2, 3 / 4 Lbs each battery X 8 pieces = 22Lbs (~ 10 kg) and can fly for 5 minutes. That is 132 lbs ( 66kg ) meringue can fly 30 minutes at full load... Weight of motors is 132 16 = 148 lbs (74 kg) fuel + engines.

    http://alshobbies.com/shop/lookupstock.php?pc=7178

    Weight of the traditional system of propulsion engine of CRE MZ202 is 38 kg, the transmission of about 15 kg, 5 gallons of fuel to the tank about 20 kg, the total weight of 72 kg and the propulsion flight time 1 hour..
    When you subtract the tail rotor 20 kg to obtain also a similar range..



    Until you can control the direction of these one additional electric motors, administer, only a little smaller.

    And this looks like a traditional electric version of the aircraft



    Bumblebee Andrew

    I have no problems with leaking oil...

  2. #92
    Join Date
    Jul 2009
    Location
    Key Biscayne
    Posts
    259

    Default Re: ROLLS-ROYCE CRECY

    The BMW M12/13 motor as used in the brabham had a BMEP of over 1000psi.

  3. #93

    Default Re: ROLLS-ROYCE CRECY

    I think that also the propeller airplanes can replenish the idea of ​​Heron's Jet Propeller. The latest toy modelers have superior features, and you may use them for "big air ".
    Well let us take a small aircraft engine Rotax 447 to 44 Nm of torque. On the axis of the propeller must gear, have twice as large, ie ~ ~ 100 Nm (10 kgm ). Przytakim driving the propeller with a diameter of 1700 mm will be to spin it properly and give the appropriate string.
    So at the end of a single turbine on the arm of Heron 's say a length of 500 mm have a string 200N (20 kg), and two shoulders at 100 N (10 kg). Then we were given the same torque on the propeller, which gives the Rotax engine.
    http://www.faston.home.pl/r447.htm
    After putting two turbines, modeling of over 10 kg (100 N), we get a replacement Rotax engine.
    They even have the parameters several times larger than we need for this example.
    Well, the weight of the drive unit will be cheaper too many times, what in aviation is crucial

    It turns out that we already have a fairly large selection of gas turbine engines such
    http://www.jetcatusa.com/p200.html
    http://www.amtjets.com/Titan.php

    And of course we have also quite a large number of electric motors to drive the turbines of jet aircraft models, whose parameters are such that we can use them in Heron's propeller well. Their parameters and parameters of the battery used in development Propeller Heron, causes them to become competitive with conventional engines
    http://shop.rc-electric-jets.com/RC-...DF120-1A83.htm

    They can be used in this exemplary model propeller Heron






    After viewing a few videos of models turbuny aircraft, I saw that these turbines do not have to be at the end of the model, and may be in the middle, and the aid of additional exhaust pipes just flies out of the model.

    http://www.youtube.com/watch?v=TNP9T...eature=related

    From this reason, and my solution also applied this collective pipe, which is separated into 4 and changes the direction of exhaust gas.
    Thanks to this, quite seriously improves the design Propellers Heron....


    And weight in relation to the Rotax is 10 times less...
    So that is similar in other much larger propeller propulsion system also...
    http://www.amtjets.com/pdf/Olympus_HP_specification.pdf

    Regards Andrew

  4. #94

    Default Re: ROLLS-ROYCE CRECY

    This is the first contemporary working model turbines Heron.
    * This photo accessories in my Low Budget Institute:



    And this movie works as a turbine

    http://www.youtube.com/watch?v=J63NOqgPgVc


    Regards Andrew

  5. #95

    Default Re: ROLLS-ROYCE CRECY

    Yes, but even here motorcycle without an the traditional engine.......



    Andrew

  6. #96

    Default Re: ROLLS-ROYCE CRECY

    Here, the view from the other side




    Andrew

  7. #97

    Default Re: ROLLS-ROYCE CRECY

    I published once the South African forum.

    http://www.landcruiserclub.co.za/cms...t&profile=1316

    Perhaps, someone saw it.
    Here it is made and the working prototype engine half rotate. Only this power way and grinding cylindrer....
    But it is works....


    http://stallionturbos.co.za/index.ph...d=58&Itemid=83




















    Regards Andrew

  8. #98

    Default Re: ROLLS-ROYCE CRECY

    Tt looks exactly like the good ,old vane pump









    Andrew

  9. #99

    Default Re: ROLLS-ROYCE CRECY

    Next Percival - it is too Heron
    http://www.new4stroke.com/percival.pdf
    .
    But all helicopters this typy such defects were....


    Seems to me that the project Herons Apache version "FEL -X" will not have these disadvantages, and will be missing heavy and very unreliable gear....

    Andrew

  10. #100

    Default Re: ROLLS-ROYCE CRECY

    Here are a few solutions that can some of the problems to solve..

    Surely you will need to test them in practice, before se makes the right decisions as to the shape of the structure of the drive.
    Perhaps such a solution with a single tube might be the most efficient, because it will most laminar flow



    Or a Cutter Heron



    Of course, a whole can be properly enclosed guard areodynamic...




    Well, here an example, if the electric drive can also adapt to the helicopter. Turbine itself would be inside the helicopter, but it would not be permanently linked to the rotor, so that no torque moved...



    It is air- gear drive

    Andrew

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