Preparation an Airplane to the Start. Rotating of a Rubber Engine. People at Aircraft Model Sports Competition Outdoors. Green Field in Konotop, Ukraine. Boys Adjusting the Models Before Launch. Preparation For Launching the Airplane Models. Kids' Technical Art. Models Assembly Before the Start. Airplane Launching. Estimation of the Aircraft Flight. Jury is Estimating the Start and Flight of the Airplane Model. Scene in Cloudy Summer Day.