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micro-UAV-2004 Petter Muren, 2004-9-15 Passively stable helicopter

micro-UAV-2004 Petter Muren, 2004-9-15 Passively stable helicopter. Passively Stable Helicopter. A small electric flying sauser hanging in the air over your desk, stable and silent – 20 years ago this was a mere dream.

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micro-UAV-2004 Petter Muren, 2004-9-15 Passively stable helicopter

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  1. micro-UAV-2004 Petter Muren, 2004-9-15Passively stable helicopter

  2. Passively Stable Helicopter • A small electric flying sauser hanging in the air over your desk, stable and silent – 20 years ago this was a mere dream. • Helicopters are considered to be unstable and difficult to control unless they are equipped with sophisticated sensors and electronics. • A passively stable helicopter - is it possible ?

  3. The Proxflyer idea • The Proxflyer co-axial rotor helicopters utilize a new mechanical and aerodynamically approach to the challenge of achieving stability • The main benefits are: - Passively stable - Simple electronics without any servos - Relative simple mechanics - High efficiency, long flight times - Very easy to pilot - Very low noise level • Possible disadvantages are: - Relative slow forward speed - Not possible to operate in wind (outdoors)

  4. The Proxflyer principle • The rotor have a generally fixed geometry and is tiltably connected to the rotor shaft • The outer part of the rotor blades have a pitch angle that is fixed relative to the rotational plane of the rotor • The inner part of the rotor blades have a pitch angle fixed relative to a reference plane perpendicular to the rotor shaft

  5. The Proxflyer principle

  6. The Proxflyer principle The Proxflyer Mosquito - Rotor diameter 36 cm - Weight 100 grams

  7. Wireless Camera Remote operation In August 2003 the Mosquito performed what is believed to be the first ever controlled flight where the pilot operated the helicopter solely by looking at a large video conferencing screen displaying the pictures from the helicopter This makes a great introduction to a meeting: Filming the audience while flying overhead inside a conference room.

  8. Toy helicopter Because the helicopter is passively stable it is also extremely easy to fly. It is actually so easy to fly that a child without any experience from helicopters or model airplanes is capable of flying it, even the first time they try

  9. Proxflyer Micron • Presented in December 2003 • Weight 6.9 gram • Rotor diameter 128 mm • 2 ch. FM radi control • C.G. trimmed forward • Motor 6mm, 4.5 ohm • Tailmotor 4mm, 25 ohm • Flight time up to 10 minutes

  10. Proxflyer Micron

  11. The Nanoflyer • Presented in September 2004 • Weight 2.7 gram • Rotor diameter 85 mm • 2 ch. IR control • C.G. trimmed forward • Motor (2x) 4mm, 25 ohm • Battery 20 mAh • Flight time up to 1 minute

  12. The Nanoflyer

  13. Passively stable helicopter .... It is possible !

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