Final answer:
To avoid a roll upset in severe icing conditions, pilots must immediately reduce the angle of attack, increase thrust, activate de-icing systems, and potentially adjust altitude. Regular maintenance and training on handling icing conditions are essential for prevention. In maritime scenarios, applying torque is necessary to correct a roll upset.
Step-by-step explanation:
To avoid a roll upset when severe icing conditions are inadvertently encountered, corrective actions must be immediate and effective. These include reducing the angle of attack, increasing thrust, and trying to lose altitude in order to increase airspeed and escape the icing environment. Additionally, it is essential to turn on the aircraft's de-icing or anti-icing systems to reduce the accumulation of ice on the wings and other critical structures. Applying continuous aileron inputs to counteract the rolling moment can also be necessary.
In more general terms, regular maintenance and inspections are crucial to ensure that all de-icing and anti-icing equipment is functioning properly. A comprehensive understanding of the aircraft's handling characteristics under icing conditions through training is also imperative for pilots. Adaptation of flight routes to avoid known icing conditions can be an effective preventative measure.
In scenarios unrelated to aviation, such as a ship encountering a roll upset, immediate corrective actions might involve applying torque to counteract the rolling moment, as depicted in Figure 10.36 where a ship requires torque to return it to an upright position after running aground and tilting.