From Roger Williams
The idea that a thin layer of plasma on aircraft wings can be used to reduce drag (9 March, p 48) took me back decades to when Concorde was losing overflying rights because of the sonic boom it created. Smoothing the flow of air around such jets would help diminish the boom – maybe plasma could be used.
Perhaps my dream might come true, and boomless supersonic aircraft will be commonplace.
Burradoo, New South Wales, Australia
