公开(公告)号：US11358719B2

公开(公告)日：2022-06-14

申请号：US16632233

申请日：2017-07-18

Applicant: ST ENGINEERING AEROSPACE LTD.

Inventor： Keen Ian Chan

IPC: B64C39/08 ,  B64C11/46 ,  B64C29/02 ,  B64C27/50 ,  B64C27/80 ,  B64C39/10

Abstract: An aerial vehicle including a first wing structure and a second wing structure which intersects the first wing structure perpendicularly at a position offset from a midpoint of a transverse axis of the first wing structure in a direction towards a first wingtip of the first wing structure. The aerial vehicle may further include a first set of at least two propellers with respective propeller rotational axes disposed side-by-side along a portion of the first wing structure extending between the midpoint of the transverse axis of the first wing structure and a second wingtip of the first wing structure. The aerial vehicle may further include a second set of at least two propellers with respective propeller rotational axes disposed side-by-side along a first portion of the second wing structure extending from a first surface of the first wing structure. The aerial vehicle may further include a third set of at least two propellers with respective propeller rotational axes disposed side-by-side along a second portion of the second wing structure extending from a second surface of the first wing structure.

公开(公告)号：US11479351B2

公开(公告)日：2022-10-25

申请号：US16612347

申请日：2017-05-09

Applicant: ST ENGINEERING AEROSPACE LTD.

Inventor： Keen Ian Chan

IPC: B64C29/02 ,  B64F5/10 ,  B64C11/46 ,  B64C39/08

Abstract: An aerial vehicle may include a first wing structure. The aerial vehicle may further include a first propeller and a second propeller disposed along the first wing structure. The aerial vehicle may further include a second wing structure disposed to intersect the first wing structure to form a cross configuration. The aerial vehicle may further include a third propeller and a fourth propeller disposed along the second wing structure. In a hovering orientation of the aerial vehicle, respective propeller rotational axes of the first and second propellers may be angled off-vertical in respective planes which may be perpendicular to a transverse axis of the first wing structure, and respective propeller rotational axes of the third and fourth propellers may be angled off-vertical in respective planes which may be perpendicular to a transverse axis of the second wing structure.

公开(公告)号：US11014662B2

公开(公告)日：2021-05-25

申请号：US16060374

申请日：2015-12-09

Applicant: ST Engineering Aerospace Ltd.

Inventor： Keen Ian Chan

IPC: B64C27/473 ,  B64C27/10 ,  B64C27/467

Abstract: A method and system for generating a set of values for respective ones of a set of parameters used in determining rotor blade profiles for a coaxial rotor system. The method includes establishing (302) a ratio of respective desired thrusts of an upper rotor (102, 602) and a lower rotor (104, 604) of the coaxial rotor system based on a desired performance of the coaxial rotor system, and determining (304) the set of values of the set of parameters from the desired thrusts ratio based on a torque balance condition between the upper rotor and the lower rotor of the coaxial rotor system.