Rotor-Head said:
that's very cool. Are those blades CURVED??? Camera shutter illusion, which I think it is. The blades are still spinning and so is the prop in the second picture...
Hi, how are you, Shawn? You are right, it's just a camera effect. It takes some time for the image to be scanned, from top to bottom. If an object is moving, it's appearance is distorted.
animal said:
I like that powered machine, do you have more info on it and any pics of it in flight?
Timothy, yesterday I didn't take any pictures of it in flight. I was preparing the glyder when that AC-4 take off. You can see more pictures of the AC-4 here:
Brazilian Gyros
AC-4 is the fourth project from Altair Coelho, a brazilian aeronautical enginner. It's an evolution of a previous gyro, the AC-1, and the first flight happened in 1964. As far as the designer keeps track, 314 units were built, by 2 brazilian licensed manufacturers.
Cruze speed: 120 km/h (75 miles per hour)
Max speed: 140 km/h (87 miles per hour)
Take-off: 100 meters
Landing: 30 meters
Rate of Climb: 10 foot per second
Empty weight: 157 kg (345 pounds)
Max. weight on take-off: 290 kg (638 pounds)
Blade profile: H-12M
Rotor Length: 7,60 m (25 foot)
Engine: air cooled VW 2200cc
Power: 85 hp
Wooden propeler
Frame: 1020 Steel tube