Assertion: helicopter's control | /r/CapableOf | enable the helicopter
Facets:
value: to perform the same maneuvers
type: PURPOSE
Source sentences:
text: Controlling these in unison enables the helicopter to perform the same maneuvers as full-sized helicopters, such as hovering and backwards flight, and many other maneuvers that full-sized helicopters cannot, such as inverted flight (where collective pitch control provides negative blade pitch to hold heli up inverted, and pitch/yaw controls must be reversed by pilot).