Rocket sonde
A rocket sonde is a measuring instrument with radio equipment that is skipped by observation rockets in order to observe the weather of the atmosphere high rise to about 60 km above. It is a rocket version of the radio sonde, and it can observe up to about twice the altitude compared to the radio sonde which is the object of observation up to 30 km above the sky. The observation area reached the entire stratosphere, furthermore to the lower middle of the mesosphere, and the observation became active from the 1960 's to clarify the state of the middle atmosphere. In Japan, development was conducted in the 1960s, including the Japan Meteorological Agency, the University of Tokyo Aerospace Exploration Research Institute (later Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency = JAXA), etc., developed and developed the MT - 135 rocket and observed Was carried out. A weather rocket observatory was set up in Ryori Sanriku Town, Iwate prefecture, and periodic observations of one round were started from 1971 and continued for about 30 years until the end of 2001. 1,119 times only by regular observation, 1,300 times if it is included other than that. MT - 135P used for periodic observation, observation equipment attached to the tip, parachute attached to the motor section, total length 3.