Waverider

On 17–19 October 1990 the University of Maryland hosted the 1st International Hypersonic Waverider Symposium. It has been a long wait; and although far more eminent contributors took part, there was also one amateur group. The comeback for the Waverider concept is due in part, at least, to determined advocacy by the amateur group, ASTRA — probably the first case of its kind. Duncan Lunan, President of ASTRA, explains.