公开(公告)号：US20180273167A1

公开(公告)日：2018-09-27

申请号：US15468069

申请日：2017-03-23

Applicant: Bell Helicopter Textron Inc.

Inventor： Matthew R. Carr ,  Matthew E. Louis ,  Kirk L. Groninga ,  Daniel B. Robertson ,  Frank B. Stamps ,  Albert G. Brand ,  Eric A. Sinusas

IPC: B64C27/82 ,  F04D17/16 ,  F04D29/46

CPC classification number: B64C27/82 ,  B64C2027/8245 ,  B64C2027/8254 ,  F04D17/16 ,  F04D29/462

Abstract: In one embodiment, a rotorcraft comprises a fuselage, a tail boom, a rotor system, and a centrifugal blower system. The centrifugal blower system comprises a centrifugal blower configured to generate thrust using an airflow, wherein the centrifugal blower is located within the tail boom. The centrifugal blower system also comprises a plurality of ducts configured to control the thrust generated by the centrifugal blower, wherein the plurality of ducts is located on a portion of the tail boom surrounding the centrifugal blower, and wherein the plurality of ducts comprises one or more adjustable ducts configured to vary a size of an associated duct opening.