sentences:  A further paper described for a fully steerable and controllable air space platform accompanied by video footage of lift and attitude control.The Coanda disk concept has a number of attractive features for use in a non hostile environments, however one disadvantage is that flight control presents a heavy power over head compared to other vertical take off and landing air platforms.As a consequence, flight endurance using electric or even internal combustion engines does not compare favorably with helicopters.. To overcome this problem, a disk gas turbine engine has been specifically designed to be accommodated on a Coanda disk aircraft.