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Video footage put out by the Indian Air Force (IAF) of the various aircraft fighter jets that flew in formation flying also captured the High Res Infrared Imagery of the aircraft giving great insight into each Aircraft’s Infrared Principles and Signature that possibly could be captured by infrared search and tracking (IRST) system of other fighter jets.

RD-33 Series-3 Engine blades of Mig-29UPG seem to be the brightest due to rectangular intakes fitted to either side of the forward fuselage that provide little deflection of the heat signature of its engines or any cover to its blades from Radar or IRST system.

Jaguar fighter jets have a smaller set of engines with smaller rectangular air intakes on either side of the fuselage behind the cockpit do seem to provide a better level of deflection of the heat signature of its engines from the IRST systems but it was expected since Twin Rolls-Royce Turbomeca Adour engine of Jaguars have less then combine the power of single RD-33 engine.

Su-30MKI have rectangular intakes and being bigger than Mig-29 it shows a better heat signature of its AL-31F engines but the aircraft still has huge RCS and the Thermal signature of the aircraft with those AL-31F engines will be easy to be picked up by any aircraft with IRST system at long range.

Rafale which features a semi-ventral pitot air intake along with its S-duct (or serpentine inlet) conceals jet engine blades from radar waves, and serrated patterns reduce frontal RCS to a limit as seen in the IR capture of the jet. Rafale was designed for a reduced radar cross-section (RCS) and infrared signature so it was not a surprise that it showed better Infrared Principles and Signatures than other jets.

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