I am afraid I have some difficulty with the concept of V1 speed in a Cessna 152 or any single engine aircraft for that matter. V1 is a decision speed at which the pilot, observing an engine failure, in which it is elected to stop OR continue the take-off to 35 feet, will not exceed the scheduled take-off field length if recognition occurs at V1. All speeds in a single engine aircraft that has suffered an engine failure are decision speed – where to put it down!
However Vr and Take-off Safety Speed (TOSS) are both valid when applied to single engine aircraft. Vr or the speed at which rotation is initiated will ensure that TOSS is achieved at fifty feet above the runway surface provided the pitch attitude is well judged. TOSS is a speed usually determined by the regulator, authority or manufacturer to ensure that adequate control exists during the initial climb after take-off in the event of an engine failure or severe turbulence.
In achieving the optimum take-off distance, the appropriate technique applied with accurate Vr and TOSS constitute important performance markers.
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dragchute
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