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Singaporean A-4SU. The base -S model adds two more wing hardpoints, cockpit armor, spoilers, Sidewinder capability, and DEFA cannons.The two-seater TA-4S got a 28" fuselage stretch with a stepped instructor's seat in back so they can see better. Interestingly, these kept the J65 of the original A4B/Cs (and A-4S) instead of the J52 of the Douglas built TA-4E/F, which kept the entire fleet of A-4Ss on the same engine.The -SU adds a non-afterburning F404 engine, laser spot tracker, TACAN, radar warning receivers, and chaff/flare launchers. The new engine gave a 29% increase in thrust, which greatly reduced takeoff roll, increased usable payload due to a lighter engine, increased range, and increased maximum speed. Max speed at sea level was 610 knots(!), max cruise at 30,000ft is 446 knots.
Singaporean A-4SU. The base -S model adds two more wing hardpoints, cockpit armor, spoilers, Sidewinder capability, and DEFA cannons.
The two-seater TA-4S got a 28" fuselage stretch with a stepped instructor's seat in back so they can see better. Interestingly, these kept the J65 of the original A4B/Cs (and A-4S) instead of the J52 of the Douglas built TA-4E/F, which kept the entire fleet of A-4Ss on the same engine.
The -SU adds a non-afterburning F404 engine, laser spot tracker, TACAN, radar warning receivers, and chaff/flare launchers. The new engine gave a 29% increase in thrust, which greatly reduced takeoff roll, increased usable payload due to a lighter engine, increased range, and increased maximum speed. Max speed at sea level was 610 knots(!), max cruise at 30,000ft is 446 knots.
