NGTE Pyestock – The National Gas Turbine Establishment – was a huge industrial site in Fleet, Hampshire. The site was used to test jet engines during their development and could simulate the conditions of flight in huge wind tunnels. Large scale expansion took place throughout the 50s and 60s to facilitate the much larger jet engines being developed such as those used on Concorde. The site finally closed in 2000 due to a decline in jet engine development and the advent of computer aided simulations.
A lot of research into noise took place at NGTE over the years, and the first anechoic chamber was built in the early 1960s. The increasing demand for quieter aircraft stimulated the more research work, and as a result a larger test facility capable of undertaking large scale noise tests on a variety of gas turbine components opened in the 1970s.
The new facility consisted of two main laboratories, fully independent of each other. These were the Absorber Rig Facility and the Anechoic Chamber facility. The Absorber Rig Facility was the first to be completed and it came into service in the summer of 1972. The Anechoic Chamber Facility was commissioned just over one year later in early 1974.