What is the standard for rotation speed during a short field takeoff?

For a short field takeoff, the standard for rotation speed is to utilize the manufacturer-published rotate speed. This speed, often indicated as VR, is specifically designed for the aircraft in question and takes into account several critical factors, including weight, balance, and runway length. Using the manufacturer-published rotation speed ensures that the aircraft can achieve optimal performance during the critical phase of takeoff, allowing for a safe and efficient transition into the air.

While other speeds, such as minimum controllable airspeed, Vx, and Vy, are important in various contexts of flight, they do not serve the primary function of initiating a takeoff in a short field situation. Minimum controllable airspeed, for instance, is the speed below which aircraft control becomes difficult, and is not appropriate for the rotation phase. Vx speed is the best angle of climb speed and is not the same as rotation speed, while Vy speed is the best rate of climb speed, also not used for takeoff rotation. Therefore, relying on the manufacturer-published rotation speed is essential for ensuring safety and performance during a short field takeoff.