Aircraft tail - engraved crystal of submarine

ASQ-81 is an unusual magnetic sensor detection system manufactured by Raytheon Corporation (USA). It has the best sensitivity compared to other sensors. Currently, ASQ-81 is being installed at the end of the tail of P-3C Orion by the Japanese Navy.

Gas pump laser magnetic sensor

The ASQ-81 sensor mounted on the top of the P-3C tail is essentially a super strong "magnetometer" helium gas pump, so it has the best sensitivity. The magnetometer is often used to measure the vector component and the vector sum of the geomagnetic field on the earth's surface.

The ASQ-81 system consists of DT-323magnetic detectors, AM-4535 amplifier-powersupply boxes, C-6983 control detection box and electronic amplifier DT 323.

The high-sensitivity sensor boxes on the ASQ-81 remotely detect abnormal magnetic quantities measured in the seabed, converted into voltage, and then filtered to show the commanding commander.

ASQ-81 sensor mounted in the tail (long) of P-3C Orion aircraft

ASQ-81 sensors are also available on helicopter SH-2G or SH-60B Seahawk. These anti-submarine aircraft pulled the ASQ-81 with a cable with the highest plane speed of 256km / h constantly monitoring in sensitive waters, spying on submarines.

Japanese naval reconnaissance force puts ASQ-81 behind the anti-submarine aircraft P-3C Orion. ASQ-81 needs to be placed away from electronic devices on the aircraft, encased in fiberglass cover, to minimize the magnetic interference, increasing accuracy.

According to the feature, up to 95% of the submarines are easily detected by ASQ-81.

Recently, Japan has adjusted its ASQ-81 system to make P-3C not fly at low altitudes, avoiding air-to-air missiles.

Combined anti-submarine systems

The anti-submarine warfare system on P-3C Orion aircraft also includes AN / ARR-78 (V) AN / ARR-72 sensors using hydro-float. There are 2 audio-oriented frequency analyzers and recording indicators.

Along with the ASQ-81 sensor, the P-3C anti-submarine aircraft also has a compensator (magnetic), manufactured under Mitsubishi's license in Japan and other diverse sensors.

P-3C Orion has Link 16 data link system, broadband satellite information communicates with sea combat units.

The flight angle of P-3C and the direction of the submarine compared to the Earth's magnetic axis is also a factor to increase the sensitivity of the ASQ-81 sensor.

P-3C Orion aircraft carry weapons in bomb compartments and over 10 underwing pylons. The bomb compartment is capable of carrying some torpedoes, submarine bombs, two-environment missiles .

P-3C aircraft are equipped with four Allison T56-A-14 turboprop engines, with a capacity of 3.661Kw, a speed of over 600km / h. It has a fuselage fuel tank totaling 34,800 liters, so the P-3C Orion operating radius is very far away, the maximum journey is 9,000km, with the crew of 11 people.