AC-7 glider is a towed gliding light two-place aircraft with a crew arrangement under the scheme side by side.
This model is designed for training and recreational flights.
The fuselage got a high safety margin such as “monocoque”. The empennage is T-shaped. The fuselage is made of fiberglass fiber fabric that is impregnated with epoxy resin and high-duty aircraft-grade foam plastic.
The wing is trapezoidal with 18 meter span clearance. The wing has 23.7 elongation point.
Standard AN lot profile FX60-157 is used for the wing fabricating, it was developed in the aerodynamic institute in Braunschweig (Germany).
It’s a NLF airfoil which is characterized by a high rate of full-lift capability.
They submit high claims to the wing surface waviness to the NLF airfoil. Along the airfoil the surface waviness is less than 0.1 mm (American standard).
Specific wing load during take-off weight of 480 kg is 33.5 kg /sq. m. Due to the selected wing elongation, at the speed of 90 km / h it takes the glider no more than 3,5 seconds to bank rolls from +45˚ to -45˚ during the spiral.
The connection in the steering system centre of speed brakes and ailerons is realized with lateral control rods.
AC-7 glider undercarriage is based on a single mainstream retractable rim design.
It’s a tube-type rim with a ball bearing connection. Its diameter is 400 mm.
Shock absorber damping – air-oil suspension.
Brake unit is disk-shaped. The booster brake – oil hydraulic drill.
Glider control – with a cycling type crowbar that is located on the control-stick grip.
Non-retractable tail wheel, diameter 220 mm, rotating clear.
A wide high-visibility cabin is built in the AC-7 glider. Cockpit canopy is opened up. For canopy emergency release it’s necessary to use two red handles that are located on the both bottom sides of the canopy line.
There is a side by side seating arrangement that provides glider with the best centre-of gravity. This kind of arrangement facilitates the novice pilots training.
The internal cockpit dimensions allow a comfortable embarkation of two athletically built pilots up to 190 cm tall.
Directional control and seatback pedals are set up to length.
Cabin visibility for each pilot is not less than 300 degrees. The viewing direction is up and around.
The cockpit panel’s got a complete list of standard flight navigation instruments.
There is some more space for component devices. VHF antenna is set up in a tail fin.
There is a standard four-point harness.