Final answer:
The most hazardous aspect of structural icing is the potential for the aircraft to lose control, due to disturbed airflow and loss of lift. For vehicle safety features, crumple zones are designed to protect passengers by increasing the time of impact, thereby reducing injury.
Step-by-step explanation:
The most hazardous aspect of structural icing is that it causes the aircraft to lose control. Icing can significantly affect the aerodynamics of an aircraft by disturbing the airflow over the wings and control surfaces, which can result in a loss of lift and potentially lead to a stall. It also results in increased drag, reduced performance, and decreased fuel efficiency, but the immediate danger to flight safety is the potential loss of control.
When it comes to the safety features of modern cars, the parts designed to crumple or collapse in the event of an accident help protect the passengers by increasing the time of impact. This deliberate structural deformation is crucial as it helps to dissipate kinetic energy and reduce the forces exerted on the passengers, thereby reducing injury to the passengers. The increase in the duration of the impact means a more gradual deceleration and less violent forces on the occupants.