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The Sikorsky MH60X SilentHawk / Test and Evaluation Project K (T.E-K).





The secret helicopters that flew the Navy SEALs on the Neptune's Spear mission to kill Osama bin Laden were a radar-evading variant of the special operations MH-60 Black Hawk .

 The helicopter's low-observable technology is similar to that of the F-117 Stealth Fighter.




The tail rotor had an unusual cover that could be anything from an armor plate to a noise reduction cover sheltering the motion-control technology used to input low-frequency variations of rotor blade pitch-angle, as tested by NASA; the blades were flatter, and not wing-shaped, whereas the paint job was extremely similar to the kind of anti-radar paint and Radar-Absorbing Material coating used by the most modern stealth fighters: nothing common to either Black Hawks, Chinooks or Apaches helicopters. The rotors, the entire body and even the canopy system on it was all integrated into that material.




The helicopter has the four dipole antennas, two on each side of the tail boom, found on both the EH-60A and EH-60L. Under the fuselage, it appears to have the long, retractable whip antenna found on the EH-60A, versus the more robust antenna system found on the EH-60L. This ventral antenna is associated with of the AN/ALQ-17A(V)2 Trafficjam communications jamming system, which is part of the larger Quick Fix II suite.