Front glass intended for Antonov An-8 and An-12 planes glazing

ТУ 21-РСФСР-265-75Е.


A-3 is intended for an all-weather visual observation while flying the aircraft or during its stay on the ground. The glazing set consists of a single element provided with documentation. The set consists of a composite glass block plane held together by a polyvinyl butyral film and rimmed with ПС-4 intermediate layer and Б-79 harness.

Electrical heating is performed through conducting film applied to the inner side of the outer glass and can be regulated by automatic temperature controlling system. Control is mediated by heating regulator АОС-81M.

The set dimensions are:   666х526х22 mm
Weight: 13,1 kg

Technical specifications:

Voltage: 190+/-9.5 V    208+/-10.4 V    230+/-11.5 V    250+/-12.5 V;
Resistance: 39.4-47.1 Ω    47.1-57.6 Ω    57.6-68.3 Ω    68.3-83.6 Ω;
Electric curren:  4.35 А        3.96 А        3.6 А        3.3 А;
Specific power: 0,58 W/cm2;
Total heating area: 1421 cm2;
Power consumption: 825 W;
Coefficient of transparency, not less than:   72%;
Warranty lifetime: 3 years;
Storage life: 2 years;
Warranty service: 2500 flight hours within warranty lifetime;
Warranty lifetime in tropical climate: 2.5 years including 1.5 year of direct service.