Heavier than air – but not by much. Flying lightweight model aircraft in large rooms and halls has a long tradition. In the last few years, the use of microelectronics has given indoor flying a new dimension.

Indoor flying World Championships

Indoor Free Flight World Championships have been held under the patronage of FAI since many years. These very delicate structures weigh only around 2 g. The small model aeroplanes are driven by a rubber band motor – the oldest form of propulsion for model aircraft. The propulsion energy is stored in a rubber band twisted by a certain number of turns. The wingspan of these lightest of aircraft is between 550 and 650 mm and in larger halls they achieve flying times of 20 to 30 minutes and more.

Download the full content of the latest Heavier than air – but not by much. Flying lightweight model aircraft in large rooms and halls has a long tradition. In the last few years, the use of microelectronics has given indoor flying a new dimension. Indoor flying World Championships Indoor Free  in PDF format !

• Current and past issues of the CIAM Flyer can be downloaded on the CIAM Flyer web page.