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The Symphony SA-160 was designed with two unusual vortex generators on its wing to ensure aileron effectiveness through the stall. A vortex generator (VG) is an aerodynamic device, consisting of a small vane usually attached to a lifting surface (or airfoil, such as an aircraft wing) [1] or a rotor blade of a wind turbine. [2]
When the speed is reduced and the aircraft approaches stall, the local flow at the leading edge is diverted outwards; this spanwise component of velocity around the vortilon creates a vortex streamed around the top surface, which energises the boundary layer. [6] A more turbulent boundary layer, in turn, delays the local flow separation.
On aircraft with swept wings, wing tip stall also produces an undesirable nose-up pitching moment which hampers recovery from the stall. Washout may be accomplished by other means e.g. modified aerofoil section, vortex generators, leading edge wing fences, notches, or stall strips. This is referred to as aerodynamic washout.
A plasma actuator induces a local flow speed perturbation, which will be developed downstream to a vortex sheet. As a result, plasma actuators can behave as vortex generators. The difference between this and traditional vortex generation is that there are no mechanical moving parts or any drilling holes on aerodynamic surfaces, demonstrating an ...
Nose, wing and ventral strakes Vortices over the wing strakes of an F/A-18E Super Hornet. In aviation, a strake is an aerodynamic surface generally mounted on the fuselage of an aircraft to improve the flight characteristics either by controlling the airflow (acting as large vortex generators) or by a simple stabilising effect.
Starting in 1973, the RSAF began to acquire Douglas A-4 Skyhawks. The first batch of over 50 airframes (ex-US Navy A-4Bs) was ordered and was subsequently requisitioned from the Military Aircraft Storage and Disposition Center at Davis–Monthan AFB, Arizona which was released to the Lockheed Aircraft Service Company at Ontario, California, and its subsidiary Lockheed Aircraft Service ...
Sales, beginning around 2000, had by 2010 reached 650 aircraft or kits. As of mid-2010 there have been about 513 Savannahs and Bingos on the registers of European countries west of Russia. [ 9 ] [ 10 ] Smaller numbers fly in North America, where the agents was Skykits Co., [ 8 ] replaced in 2011 by I.C.P. Aviation North America, LLC (ICPANA ...
Data from DM1 bis DM4 General characteristics Crew: 1 Length: 6.32 m (20 ft 9 in) Wingspan: 6 m (19 ft 8 in) Height: 3.25 m (10 ft 8 in) Wing area: 19 m 2 (200 sq ft) ca Empty weight: 375 kg (827 lb) Gross weight: 460 kg (1,014 lb) Performance Maximum speed: 558 km/h (347 mph, 301 kn) Max speed in terminal velocity dive Stall speed: 72 km/h (45 mph, 39 kn) Maximum glide ratio: 7 See also ...