DEVICE FOR PREVENTION OF HELICOPTER COLLISIONS WITH HIGH-VOLTAGE POWER LINES Russian patent published in 2001 - IPC

FIELD: radar equipment, applicable for insurance of safety of helicopter flight at low altitudes, in particular, for warning of helicopter pilots on the danger of collisions with high-voltage power lines. SUBSTANCE: the device has an antenna receiver, the first and second keys, the first threshold unit, the first flip-flop, tunable filter, the second threshold unit, n-digit shift register, type k/n detector, the first AND gate, the second flip-flop, brightness indicator, the first OR gate, the third flip-flop, sound indicator, clock-pulse oscillator, the second AND gate, frequency divider, the second OR gate, 1-digit counter, logical unit, the first and second delay units. EFFECT: prevented collisions of helicopter with obstacles in the form of electric power lines. 1 dwg _