Portsmouth enrols 23,000 students and is ranked among the world's best modern universities. Portsmouth is also the birthplace of author Charles Dickens and engineer Isambard Kingdom Brunel. The Romans built Portus Adurni, a fort, at nearby Portchester in the late third century. The city's Old English name "Portesmuða" is derived from "port", meaning a haven, and "muða", the mouth of a large river or estuary. The "Anglo-Saxon Chronicle" has a warrior called Port and his two sons killing a noble Briton in Portsmouth in 501. Winston Churchill, in his "A History of the English-Speaking Peoples", says that Port was a pirate
RD-843 RD-843 The RD-843 is a Ukrainian single nozzle liquid propellant rocket engine burning pressure-fed UDMH and nitrogen tetroxide. It is rated for up to 5 restarts, and can gimbal up to 10 degrees in each direction. It was developed by Yuzhnoye Design Bureau for Avio and is manufactured by Yuzhmash. It uses the RD-869 thrust chamber, the old Soviet ICBM SS-18 Satan final stage engine from which it is evolved, and which was also designed by Yuzhnoye. The RD-843 ground test campaign included 74 tests, 140 ignitions, reaching a total of 8201 s, which is approximately 12 service lives on