A Helping Hand With The Jet -- Ronald Stovold, of Guildford, Surrey. With his Dyna jet entry for the fastest race of the day. Helping with with the motor pump is Peter Musgrave, aged 3, of Park street, Hertfordshire. Model 'jet' aircraft were a feature of the rally held at Radlett Aerodrome, Hertfordshire, today (Sunday) by the St. Albans model Aero club. Enthusiastic flyers of models saw all types, including gliders. 'Elastic' - engined models familiar to most children, and others powered by petrol, diesel and Jet engines. August 28, 1949.