Аннотация:The paper presents results of an experimental study of quasi-periodic variations of the charged and neutral components of secondary cosmic rays observed by the Nataliia-1M gamma-telescope at a height of 35 km during the magnetic disturbance of August 10-11, 1981. Most pronounced were the variations of particles with periods of 1.1-1.5 min (electrons with energy exceeding 15 MeV, protons with energy exceeding 200 MeV, and gamma rays with energy exceeding 5 MeV) and of particles with a period of about 11 min (protons with energy exceeding 200 MeV) in the region of the midnight meridian.