Raven, waar komt die eigenlijk vandaan??

Discussie in 'Algemeen modelvliegen' gestart door Mark Oostveen, 6 feb 2008.

  1. Mark Oostveen

    Mark Oostveen

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    Gewoon eens een vraag.

    Wie weet eigenlijk waar de Raven vandaan komt. We kennen hem als kunstvlucht model en vele soorten en maten. Natuurlijk de turbine uitvoering als de Turbo Raven.. Maar als ik een beetje op internet probeer te zoeken kom ik over de Raven (niet de turbo) verdomde weinig tegen..

    Dit lijkt wel het enige.. De piloot die beide vloog..

    Wayne Handley Aerosports

    Hier staat dat het gebouwd is door Zivco Aeronautics, de makers van de Edge... Maar verder

    Ben ik blind of.... ????

    Groetjes

    mark
     
    Laatst bewerkt: 6 feb 2008
  2. spazz11

    spazz11

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    Heej Mark,

    Als ik een beetje google dan kom ik er inderdaad bij dat de raven een uniek toestel is. Maar deze zou gebaseerd zijn op de rebel 2300, misschien is dit een aanknopingspunt om verder te zoeken?

    groeten uit dinxerlo!

    Michael
     
  3. spazz11

    spazz11

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  4. MikeV4

    MikeV4

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    The Raven is a one-of-a-kind aircraft developed for ex-Navy fighter pilot and aerobatic competitor, Wayne Handley. The two-seat, mid-wing aerobat was designed and configured for EXTREME aerobatics and is powered by a 330HP Lycoming. Handley participated in many airshows and is a three-time California Unlimited Aerobatic Champion title holder. He also held the World Record in inverted spins for a number of years.
    The (never-ending) quest for more power centered on a P & W turboprop with 750 shaft horsepower. It was obvious that the original airframe would not be up to the stress imposed by this powerplant, a new aircraft HAD to follow.
    First flown in March 1998, the racy "ORACLE" Turbo Raven, with its long nose and rather unusual (but none the less functional) wingtips, and a HUGE rudder with the same tip treatment has proved to be a real eye-opener for both the general public AND the aviation community.

    On the airshow circuit Wayne initially flew a Pitts Special Biplane in an act that he called Agrobatics in which he merged some of the techniques that an agricultural pilot might employ while applying chemicals to crops with his own graceful style of aerobatic flying. Wayne would fly under a ribbon stretched between two poles which simulated powerlines, afterwards he performed an inverted cut of that ribbon using his propeller. After a few years in the Pitts, Wayne started work on a one of a kind aircraft which would be known as the Raven.


    The Raven is a composite monoplane with a unique paint scheme that paid tribute to the bird species which has been observed performing aerobatics apparently for fun. Originally based on the Rebel 2300 homebuilt aircraft Wayne modified the design with a two place seating arrangement, the Edge wing by Zivko Aeronautics, and many other custom details such that the Raven was a one of a kind aircraft of Wayne's design. Very advanced for its time, the Raven was capable of +/-16G, over 380 degrees per second roll rate, a 4,000-foot (1,200 m) per minute rate of climb, stunning tumbles, torque rolls, tailslides, and any other maneuver Wayne could create. This aircraft performed for airshow crowds for over a decade up until its August 2005 retirement to the Evergreen Aviation Museum where it will hang above the Spruce Goose.
    In 1998, with sponsorship by ORACLE, and seeking an even more impressive airshow aircraft, Wayne set out to create the exceptional Oracle Turbo Raven which was the world’s only aerobatic aircraft with a thrust to weight ratio higher than one (more thrust than weight). Teaming up with Richard Giles of Akrotech, and AgAir Systems, the ORACLE Turbo Raven came to life. The composite airframe based on the G-202 design had an empty weight of only 1,600 pounds (725 kg) and was fitted with a 750 horsepower (560 kW) Pratt & Whitney PT6A-25C turboprop that generated 2,800 pounds (12,500 N) of thrust which gave the aircraft a power loading of less than 2.7 lb/hp at ready to fly weights. With this unheard of power loading the Oracle Turbo Raven could fly straight up, hover in mid-air, back up, stop, and then accelerate straight up out of the hover. The aircraft also had enough power that it could recover from flat spins simply by flying out of them with the nose still on the horizon. With a top speed of 300 mph (480 km/h) and a roll rate of 450 degrees per second this aircraft was quite impressive.

    Wayne once again got into the record books flying the Turbo Raven from brake release to 3,000 meters in only one minute and nine seconds on January 20, 1999. In July of 1999 at EAA AirVenture Oshkosh the Turbo Raven took three minutes, six seconds to get to 6,000 meters, and established the Turbo Raven as the fastest climbing propeller driven aircraft in the world. This aircraft was also able to reverse the pitch of its propeller blades in flight, and could actually slow down while diving towards the ground, Wayne used this ability to make very steep approaches to land, as well as for unique maneuvers where he could slow below stall speed while diving. Sadly, this aircraft was destroyed October 3, 1999, exactly one year to the day after its debut when the engine failed during one such approach at the California International Airshow at Salinas and Wayne was unable to accelerate above stall speed with the propeller in reverse pitch. Wayne was seriously injured, though fortunately he made a full recovery and was flying within a month after the accident. The NTSB official accident investigation claims that the power-plant and the propeller were operating normally and blamed the crash on pilot error [2]
     
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  5. MikeV4

    MikeV4

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    Oracle Turbo Raven

    An aerobatic airplane with a positive thrust-to-weight ratio was a dream come true for airshow performer Wayne Handley. In 1998, he turned that dream into a goal and succeeded in producing a one-of-a-kind show plane. With a 750 HP turboprop engine producing 2,800 pounds of thrust, the Oracle Turbo Raven was able to go straight up, stop, and go straight up again. The Turbo Raven was truly state of the art. Its airframe was made entirely of composite material. The optimization of performance was the design goal in every construction decision while making the Turbo Raven as strong and as light as possible. One result of this goal was a single seat.

    The engine was a Pratt & Whitney PT6A-25C which is used in some military training aircraft that require the use of an inverted oil system. The Turbo Raven had a roll rate of 450 degrees per second and a top speed of 260 knots (300 MPH) at sea level. The airplane was IFR equipped, had bleed air heat to the cockpit and oxygen, so flying coast to coast in one day was possible.

    The Oracle Turbo Raven established itself as the fastest climbing propeller driven airplane in the world. On January 20, 1999, Wayne took the Turbo Raven from brake release to 3,000 meters (9,842.5 feet) in one minute and nine seconds. This was deemed as one of the most significant world records of the year by the National Aeronautic Association. Later that year, during Airventure 99 at Oshkosh, WI., Wayne and the Oracle Turbo Raven shattered the time-to-climb record to 6,000 meters with a time of three minutes and six seconds. Along with the vertical stops and starts, Wayne enjoyed its ability to fly out of an upright flat spin to the left without lowering the nose below the horizon. He would add power until the nose was 15 degrees above the horizon, then come in with right rudder, add more power and fly out of the spin. The pilot's ability to select reverse propeller pitch in flight was another unique feature of the Turbo Raven. Reversing pitch turned the propeller into a big speed brake, enabling the pilot to make extremely steep approaches. Of course, this feature also allowed Wayne to back in and out of his parking spot - the envy of every other airshow performer.

    Wayne flew the Oracle Turbo Raven in its first airshow on Oct. 3, 1998 and its last show on Oct. 3, 1999. During a steep approach to landing, the engine flamed out as Wayne was bringing the propeller out of reverse and he was unable to attain the speed necessary to flare for landing. The airplane was destroyed and Wayne was severely injured, but has since made a complete recovery.



    Specifications and Performance

    Powerplant Pratt & Whitney PT6A-25C
    Horsepower 750
    Propeller Hartzell 3 blade composite, 100² diameter
    Wingspan 24 feet
    Length 22 feet, 4 inches
    Height 8 feet, 9 inches
    Wing Area 100 square feet
    Seats 1
    Empty Weight 1,600 pounds
    Fuel Capacity 150 gallons / Jet-A
    G Limits 12 positive / 12 negative
    Take-off Distance 200 feet @ performance weight
    Landing Distance 800 feet (using reverse thrust)
    Max Climb 10,000 fpm @ 120 KIAS
    Cruise Climb 4,500 fpm @ 215 KIAS
    Service Ceiling 30,000+ feet
    Fuel Consumption 45 gph @ cruise power
    Range 800 nm (VFR reserves)
    Endurance 3 hours (VFR reserves)
    Vne (never exceed) 300 KIAS
    Vs1 (stall) 65 KIAS
    Vref (approach) 80 KIAS
    Top Speed @ 3,000 feet 260 KIAS (300 mph)
    75% Power @ 3,000 feet 230 KIAS
    Sustainable Vertical Speed 60 KIAS, 5,000 fpm, straight up!
    Exhilaration Factor "10"

    Paint Colors: PPG's Deltron Flame Red DBU76481ALT, Dark Blue "Raven" DBU4429,

    Gold DBU84264





    Ik ga het niet vertalen he, maar dat is ongeveer alles wat er te vinden is op het net van de TR.
    Over de Raven zelf is er echt maar weinig bekend.
     
  6. MikeV4

    MikeV4

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  7. Mark Oostveen

    Mark Oostveen

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    Kijk dat is nog eens info... Rebel 2300.. Tik dat in en wat krijg je dan??

    Aviation Photos: Rebel 2300

    En jawel. Foto's van een rebel 2300 met Raven colorscheme (gevlogen door Handley).. Zou dus goed hetzelfde kunnen zijn.


    Even late in wikepedia

    Wayne Handley - Wikipedia, the free encyclopedia

    Citaat:

    The Raven is a composite monoplane with a unique paint scheme that paid tribute to the bird species which has been observed performing aerobatics apparently for fun. Originally based on the Rebel 2300 homebuilt aircraft Wayne modified the design with a two place seating arrangement, the Edge wing by Zivko Aeronautics, and many other custom details such that the Raven was a one of a kind aircraft of Wayne's design. Very advanced for its time, the Raven was capable of +/-16G, over 380 degrees per second roll rate, a 4,000-foot (1,200 m) per minute rate of climb, stunning tumbles, torque rolls, tailslides, and any other maneuver Wayne could create. This aircraft performed for airshow crowds for over a decade up until its August 2005 retirement to the Evergreen Aviation Museum where it will hang above the Spruce Goose.

    Kortom, even kort door de bocht: Het is een Rebel 2300 met een Edge vleugel en een tweezits configuratie.

    Mark
     
    Laatst bewerkt: 7 feb 2008
  8. Alexzzz

    Alexzzz Moderator Moderator team Forum veteraan

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    Maaruh Mark, wil je een Raven gaan bouwen?:)
     
  9. rene_w

    rene_w

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    raven

    de raven zoals op de foto heeft wel de tekening erop maar mist toch wel de uitloop naar achter bij de wingtips en bovenaan op het einde van het stabilo. juist die lijnen geven het toestel iets aparts.
     
  10. allrounder_w.l.c.

    allrounder_w.l.c.

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    Een raven is echt 1 van de mooiste kunstvlucht kisten als je het mij vraagt..
    Hmm ooit, moet er toch een keer in raven in de collectie komen (A)
     
  11. mestdaght

    mestdaght

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    Heeft er Iemand weet van een diecast of matchbox model ?
    Voorlopig vindt ik alleen RC modellen.
    Het is als geschenkt bedoeld.
     

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