Geografické a technické podmínky pro vznik sportovních letišť na příkladu severních Čech v meziválečném a poválečném období

The presented paper focuses on geographic, meteorological, socioeconomic and localization conditions for the establishment of sports airports from the 1920s till the 1950s. The technical aspect of changes in launching methods starting with a rubber rope and ending with aerotows and winches during the post-war period is important. Another change came with the transfer from single-seat gliders to training double-seaters. A modification of airport typology came along with this change, i.e. from training and sloping areas to flat sports airports. The whole process is presented by means of several examples from North Bohemia.