Siberian scientists create technology to improve aircraft take-off and landing safety
Scientists at the Zuev Institute of Atmospheric Optics (IAO) in Tomsk, together with their Siberian Branch of the Russian Academy of Sciences (SB RAS) colleagues at the Institute of Climatic and Ecological Systems Monitoring, have developed a technique to measure the characteristics of the lower atmosphere, which will enhance the safety of aircraft take-off and landing, according to a statement from the SB RAS Public Relations Centre that Sib.fm’s correspondent examined on 29 May.
«Together with our colleagues from the SB RAS Institute of Climatic and Ecological Systems Monitoring, a new acoustic sounding method for the atmospheric boundary layer has been developed and realised. It makes it possible to remotely determine temperature and wind speed characteristics simultaneously, taking into account turbulent sound attenuation, and study their interaction,» declared the researchers.
It is mentioned that the new technology was made possible by the scientists’ decision to modify existing acoustic radars (SODAR). These devices emit a directed sound wave into the atmosphere, which is reflected by irregularities that occur in the air due to turbulent exchange and returns as a signal, the characteristics of which are analysed to determine either wind speed or temperature fluctuations.
«These parameters are interrelated, and we tried to solve the problem of remotely defining them simultaneously for the first time, synchronising various information channels in one device. The results inspired us to submit a patent application,» said SB RAS IAO senior researcher, Candidate of Physico-Mathematical Sciences Lyudmila Shamanaeva.
The scientists expect that the method will be applied at airports in order to ensure the safety of aircraft during take-off and landing. It allows for real-time monitoring of both temperature and wind turbulence in the lower atmosphere, where the pilot has to decide to either land the aircraft or execute a go-around.
«The air pockets created by turbulence are especially dangerous there because there’s not a lot of altitude or time to manoeuvre, and an unplanned sharp descent of an aircraft can lead to disaster,» noted the scientists.