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公开(公告)号：US20200172243A1
公开(公告)日：2020-06-04
申请号：US16632233
申请日：2017-07-18
Applicant: ST ENGINEERING AEROSPACE LTD.
Inventor： Keen Ian CHAN
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.
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公开(公告)号：US20230084519A1
公开(公告)日：2023-03-16
申请号：US17800192
申请日：2020-12-14
Applicant: ST ENGINEERING AEROSPACE LTD.
Inventor： Keen Ian CHAN
IPC: 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 corotating coaxial rotor system. The method comprises establishing a ratio of respective desired thrusts of an upper rotor and a lower rotor of the corotating coaxial rotor system based on a desired performance of the corotating coaxial rotor system; and determining the set of values of the set of parameters from the desired thrusts ratio based on an equal rotation speed condition between the upper rotor and the lower rotor of the corotating coaxial rotor system, wherein the set of parameters includes torques of the upper rotor and the lower rotor.
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公开(公告)号：US20190002096A1
公开(公告)日：2019-01-03
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.
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公开(公告)号：US20200172238A1
公开(公告)日：2020-06-04
申请号：US16612347
申请日：2017-05-09
Applicant: ST ENGINEERING AEROSPACE LTD.
Inventor： Keen Ian CHAN
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.
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