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Original Message This is my take on the subject. Both Vy and Vtoss are typically flown at the maximum power available. Vy: Think POWER/DRAG (i.e. the aircraft climbs to altitude fast, pilot is exploiting the minimum drag acting on the aircraft while applying maximum power). Vtoss: Think POWER/MAIN ROTOR THRUST (i.e. the aircraft climbs steeper, pilot is maximizing the main rotor thrust vector at maximum power). |