ConceptNet 5: rotary wing aircraft

Types of rotary wing aircraft

en autogyro ⁽ⁿ⁾ ➜
en A helicopter ➜
en helicopter ⁽ⁿ⁾ ➜
en ultralight helicopter ⁽ⁿ⁾ ➜

rotary wing aircraft is a type of…

en air transportation vehicle ⁽ⁿ⁾ ➜
en hexalateral object ⁽ⁿ⁾ ➜

Links to other resources

umbel.org /umbel/sc/RotaryWingAircraft
sw.opencyc.org /2012/05/10/concept/en/RotaryWingAircraft