|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||244/54 ; 244/67 ; 244/13|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 8 인용 특허 : 1|
A ducted propeller aircraft from which visibility is excellent and which is capable of operating quietly and efficiently has a propeller shroud which serves as a primary load path to pass bending and torsional stresses to which the mainplane is subject in use between the portions of the mainplane either side of the shroud, the shroud defining a duct which is unimpinged upon by any portion of the turbulent airflow emanating from the mainplane.
An aircraft having lift-producing means comprising a mainplane, a prime mover, a propeller with a hub operatively driven by the prime mover in use to produce by movement through the ambient air sufficient thrust for flight of the aircraft, the propeller being located intermediate the port and starboard ends of the mainplane, and an annular shroud including a mainplane support portion, the shroud comprising: (i) a duct surrounding the propeller defining an upstream end so located relative to the lift producing means that it is unimpinged or substantially ...