Jastreb Vuk-T

The FAJ Jastreb Vuk-T often called Vuk (Serbian:Vuk - Wolf) is a Standard Class single-seat high-performance glider, intended for transition training, designed and built in the Yugoslavia from the late 1970s.
The Vuk-T was manufactured by FAJ Jastreb in Vršac entirely from fiberglass. After manufacture the gliders were first tested by the JRV before donation to state-sponsored aero clubs across the country.
Permitted to do the following aerobatic manoeuvres: loop, stall turn, steep turn and spin, the Vuk-t is popular in flying clubs because it reminds club members about free flying, the free donation of planes to clubs by the army and general Yugoslavian nostalgia. The majority of surviving Vuk-t gliders fly with aero-clubs with few aircraft in private ownership and are expected to have a long life due to the high structural strength and ease of maintenance.
One peculiar attribute of the VUK-T can be characterized by a whistling sound when flying, often described as the howl of a wolf, (vuk meaning wolf in some languages used by peoples of the former Yugoslavia). There were two gliders of this type in Aero Club Skopje, but now there is only one (currently undergoing restoration).
General characteristics: Crew: 1, Length: 6.5 m, Wingspan: 15 m, Height: 1.3 m, Wing area: 11.955 m2, Airfoil: NASA GA(W)-1, Empty weight: 260 kg, Gross weight: 385 kg, Minimum pilot weight equipped: 70 kg, Maximum pilot weight equipped: 110 kg
Performance: Stall speed: 59 km/h, Never exceed speed: 240 km/h, Max Rough air speed 150 km/h, Max Aerotow speed 125 km/h, Max Winch launch speed 110 km/h, Maximum glide ratio: 37.5 at 105 km/h, Rate of sink: 0.65 m/s.

LET L-23 Super Blaník

The LET L-23 Super Blaník is a two-seat glider of all-metal structure. The aircraft is primarily used for flight training. The Super Blaník is an improved version of the original LET L-13 Blanik, and is somewhat roomier in front. Differences include a swept fin and a T-tail. While flaps were eliminated, airbrakes are still included on the L-23. The airbrakes open on both the top and the bottom of each wing. LET also moved the tailplane to the top of the vertical stabilizer for better protection in case of outlanding. It has a new instrument suite and a new two-piece canopy (with different framing from that on the original L-13) to improve vision.
The maximum number of occupants is two. If the sailplane is to be flown solo, the pilot must be sitting in the front seat and his weight (including parachute and ballast) must be at least 70kg. If the pilot's weight is less than 70kg, it is necessary to use ballast to bring the total weight in the front to at least 70kg. A weighted cushion weighing 15kg is available to replace the soft seat cushion bottom in the front seat.
General characteristics: Crew: 2, Length: 8.5 m, Wingspan: 16.2 m, Height: 1.9 m, Wing area: 19.15 m2, Airfoil: root: NACA 632A-615 ; tip: NACA 632A-612, Empty weight: 310 kg, Max takeoff weight: 510 kg dual.
Performance: Stall speed: 56 km/h at max t/o weight dual, Never exceed speed: 256 km/h; in smooth air at max t/o weight dual, 160 km/h in rough air, 150 km/h on aero-tow, 120 km/h on winch launch, g limits: +5.3 -1.5 at max t/o weight dual, +6 -3 at max t/o weight solo, Maximum glide ratio: 28 at 90 km/h at max t/o weight dual.

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