Bronisławski II Biplane

In 1910-1911 dr.eng. Bolesław Bronisławski developed in France the original system of the airplane steering in longitudinal axis by other means than conventional ailerons or by twisting the wingtips. His design utilized vertical axis on wingtips which had several surfaces mounted diagonally to the flight level and were rotated to achieve roll movement. Initial trials were conducted on modified Farman III aircraft. After relatively successful trials the system was further refined and installed on a new aircraft that was built utilizing large parts of Farman and tested 1911-1912.