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LAK-19

Summary

The LAK – 19 is a standard class sailplane designed and certified to the JAR – 22 category “U” specifications. It is a midwing glider without flaps, T – tail, retractable main landing gear with the shock absorber, pneumatic tail wheel and is capable of carrying 180ltr water ballast.

LAK-19 sailplane is made of hybrid composite materials such as kevlar, carbon, glass fibre. The wing spar is made of modern carbon rods GRAPHLITE SM315 and has a double T section. The weight of each wing panel is about 55 kg. The airbrakes are situated in upper surfaces only. The wing airfoil is LAP 92 – 130/15 and it passes into the LAP 92 – 150/15 in the tip.

The cockpit construction is monocoque . The manually contoured seat pan and an adjustable seat back together with optimally arranged control elements offer notable comfort on long flights. The one piece Mecaplex canopy hinges forward. On the left side there is a sliding window with ventilation scoop. The instrument panel lifts up together with the canopy.

The retractable landing gear has a 350×15 mm tire and shock absorber. The mechanical main wheel brake is actuated by a handle on the control stick. The rudder pedals are adjustable in flight. All controls, including the water ballast system, hook up automatically. The tow release is mounted near the main landing gear and permits winch as well as aerotow take off. The wings incorporate fork – type spar roots joined with two pins.

The T-tail (fixed stabilizer with elevator) provides stable and responsive pitch characteristics. The elevator hooks up automatically during assembly. The glider is fitted with a fin ballast tank (capacity 7ltr) in order to compensate the nose-heavy moment created by the high ballast loads in the wings tanks. The fin ballast tank is jettisonable in flight. The water ballast is filled in, and emptied out through the holes at the bottom of the wings. The VHF antenna is mounted in the vertical fin.

Warranty 24 months or 200 flight hours whatever comes first.

Technical data

Empty Weight, kg
270
MTOW, kg
480
Water Ballast in Wings, kg
180
Min Wing Loading, kg/m²
36.4
Max Wing Loading, kg/m²
53
Wing Span, m
15
Wing Area, m²
9.06
Fuselage Length, m
6.53
Fuselage Height, m
1.32
V_ne, km/h
275
Min. Sink Rate, m/s
0.53
Best L/D Without Ballast
44
Best L/D With Ballast
45
G Limits Without Ballast
-2.65/+5.3
Type
SOLO 235
Overall system weight, kg
50
Propeller Diameter, m
0.9
  • Landing gear position warning when opening the airbrakes;
  • Shock absorbing foam cushion;
  • Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
  • Antenna for a transponder preinstalled in the fin;
  • Factory installed ELT;
  • Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
  • LED strobe, low energy consumption;
  • Factory installed oxygen system;
  • Tinted canopy glass;
  • Air extractor;
  • Microphone in the instrument panel;
  • Choice of cushion materials, fitting the LAK standard shape or a customized shape:
  • Sockets for a headset;
  • Installation of a CD or USB player;
  • Bluetooth devices.
Empty Weight, kg
276
MTOW, kg
500
Water Ballast in Wings, kg
180
Min Wing Loading, kg/m²
34.2
Max Wing Loading, kg/m²
51
Wing Span, m
18
Wing Area, m²
9.8
Fuselage Length, m
6.53
Fuselage Height, m
1.32
V_ne, km/h
275
Min. Sink Rate, m/s
0.48
Best L/D Without Ballast
49
Best L/D With Ballast
50
G Limits Without Ballast
-2.65/+5.3
Type
SOLO 235
Overall system weight, kg
50
Propeller diameter, m
0.9
  • Landing gear position warning when opening the airbrakes;
  • Shock absorbing foam cushion;
  • Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
  • Antenna for a transponder preinstalled in the fin;
  • Factory installed ELT;
  • Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
  • LED strobe, low energy consumption;
  • Factory installed oxygen system;
  • Tinted canopy glass;
  • Air extractor;
  • Microphone in the instrument panel;
  • Choice of cushion materials, fitting the LAK standard shape or a customized shape:
  • Sockets for a headset;
  • Installation of a CD or USB player;
  • Bluetooth devices.
Empty Weight, kg
220
MTOW, kg
452
Water Ballast in Wings, kg
180
Min Wing Loading, kg/m²
31.5
Max Wing Loading, kg/m²
50
Wing Span, m
15
Wing Area, m²
9.06
Fuselage Length, m
6.53
Fuselage Height, m
1.32
V_ne, km/h
275
Min. Sink Rate, m/s
0.53
Best L/D Without Ballast
44
Best L/D With Ballast
45
G Limits Without Ballast
-2.65/+5.3
  • Landing gear position warning when opening the airbrakes;
  • Shock absorbing foam cushion;
  • Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
  • Antenna for a transponder preinstalled in the fin;
  • Factory installed ELT;
  • Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
  • LED strobe, low energy consumption;
  • Factory installed oxygen system;
  • Tinted canopy glass;
  • Air extractor;
  • Microphone in the instrument panel;
  • Choice of cushion materials, fitting the LAK standard shape or a customized shape:
  • Sockets for a headset;
  • Installation of a CD or USB player;
  • Bluetooth devices.
Empty Weight, kg
226
MTOW, kg
453
Water Ballast in Wings, kg
180
Min Wing Loading, kg/m²
30.1
Max Wing Loading, kg/m²
46.2
Wing Span, m
18
Wing Area, m²
9.8
Fuselage Length, m
6.53
Fuselage Height, m
1.32
V_ne, km/h
275
Min. Sink Rate, m/s
0.48
Best L/D Without Ballast
49
Best L/D With Ballast
50
G Limits Without Ballast
-2.65/+5.3
  • Landing gear position warning when opening the airbrakes;
  • Shock absorbing foam cushion;
  • Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
  • Antenna for a transponder preinstalled in the fin;
  • Factory installed ELT;
  • Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
  • LED strobe, low energy consumption;
  • Factory installed oxygen system;
  • Tinted canopy glass;
  • Air extractor;
  • Microphone in the instrument panel;
  • Choice of cushion materials, fitting the LAK standard shape or a customized shape:
  • Sockets for a headset;
  • Installation of a CD or USB player;
  • Bluetooth devices.