By S. Newman (Lecturer in Helicopter Engineering, Department of Aeronautics & Astronautics, Southampton University)
By Peter Reese
By Nigel Watson
By Dr Stephanie Green
By Christian Wolmar
By Nicholas Whittaker
By Papayanis, Nicholas
By Jeuda, Basil
By Blagrove, David
By Waller, Peter
By Kilroy, James M.C., Johnston, Norman
By Geoffrey Lunn
By Johnson, Peter
By Hibbs, John
By Kenneth Button
By Hibbs, John, Knipping, Oliver, Merkert, Rico, Nash, Chris
By Rose George
By Ruddock, Alan
By Hamilton, Karen
By Pearson, Michael
By Roach, Martin
By Jenkins, David
By Thomas Crump
By Levinson, Marc
By Fisher, Stephen
By Cowsill, Miles, Hendry, John, McDuff, Lawrence
By David J. Smith
By glyn kraemer-johnson, John Bishop