公开(公告)号：US20180118361A1

公开(公告)日：2018-05-03

申请号：US15542418

申请日：2016-01-11

Applicant: KOREAN AIR LINES CO., LTD.

Inventor： Seung Kie CHOI ,  Shin Je CHO ,  Sang Hun LEE

IPC: B64D31/06 ,  F02D9/02 ,  F02D41/14 ,  F02D41/26

CPC classification number: B64D31/06 ,  B64C39/024 ,  B64C2201/044 ,  B64D33/08 ,  F02D9/02 ,  F02D41/0002 ,  F02D41/14 ,  F02D41/1401 ,  F02D41/26 ,  F02D2200/021 ,  F02D2400/06 ,  Y02T10/42

Abstract: The present invention relates to a system for maintaining a constant temperature of an engine in an unmanned aerial system with an autothrottle limiting device, the system comprising: an autopilot 100 for issuing a throttle command; an autothrottle limiting device 200 for automatically limiting an upper limit of the throttle command issued by the autopilot 100; and a rotary engine 300 for feeding an internal temperature of the engine of the autopilot 100 back to the autothrottle limiting device 200. Thus, the system is applicable to all the kinds of unmanned aerial systems employing an air-cooling rotary engine (i.e. reciprocating engine), uses the existing autopilot of the unmanned aerial system without modification, improves the reliability and life of the engine, and safely takes the aerial vehicle back without accidents in the engine even though communication with a terrestrial system is interrupted.