
1) US research rocket
Found on
https://www.crosswordclues.com/clue/aerobee

The Aerobee rocket was a small (8 m) unguided suborbital sounding rocket used for high atmospheric and cosmic radiation research in the United States in the 1950s. Research utilizing V-2 rockets after World War II produced valuable results concerning the nature of cosmic rays, the solar spectrum, and the distribution of atmospheric ozone. The limi...
Found on
http://en.wikipedia.org/wiki/Aerobee

(from the article `Van Allen, James A.`) ...Laboratory of Johns Hopkins University, Silver Spring, Md. He supervised the testing and use of captured German V-2 rockets for upper atmosphere ...
Found on
http://www.britannica.com/eb/a-z/a/23

Launch of an Aerobee-Hi An early sounding rocket that was essentially a larger, upgraded version of the WAC Corporal. The Aerobee was one of two rockets developed by the United States Navy in the 1940s – the other being the Viking – to loft scientific instruments into the upper atmo...
Found on
http://www.daviddarling.info/encyclopedia/A/Aerobee.html

a U.S. two-stage, liquid-propellant sounding rocket developed in the 1940s that carried scientific instruments and occasionally biological specimens into the upper stratosphere.
Found on
https://www.infoplease.com/dictionary/aerobee
No exact match found.