IP Library Granted Patent US 12,296,972
Granted Patent B2
US 12,296,972 · App. 18/069,843 · Granted May 13, 2025

Airflow guide structure and aircraft

Inventors: Masahiko Asanuma (Saitama, JP); Susumu Mashio (Saitama, JP)
Assignee: HONDA MOTOR CO., LTD.
B64D33/10B64C29/0025
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Quick Facts
Patent No.
US 12,296,972
App. No.
18/069,843
Granted
May 13, 2025
Kind
B2
Abstract

The aircraft includes a fuselage, a front wing and a rear wing provided to extend laterally from the fuselage for generating lift during cruise, a boom extending in a front-back direction supported by these wings to be spaced apart from the fuselage, a VTOL rotor supported on the boom and having one or more blades for generating thrust in a vertical direction during take-off and landing, a cooling system for cooling the VTOL rotor by using a radiator arranged within the boom, and an airflow guide structure provided in a part of the boom for guiding airflow generated by rotation of the blades to the radiator, and having an inlet provided on a side that faces toward a rotational direction of the blades relative to a rotational axis of the VTOL rotor, of a surface of the boom positioned below a plane of rotation of the blades.

Claims (27)

1. An aircraft comprising:

fuselage;

a wing body that is provided to extend laterally from the fuselage and configured to generate lift during cruise;

a boom extending in a front-back direction that is supported by the wing body to be spaced apart from the fuselage;

a rotor that is supported on the boom, the rotor having one or more blades configured to generate thrust in a vertical direction during take-off and landing;

a cooling apparatus configured to cool the rotor by using a radiator arranged within the boom; and

an airflow guide structure provided in a part of the boom and configured to guide airflow, which is generated by rotation of the one or more blades rotating around a rotational axis of the rotor, to the radiator, wherein

the airflow guide structure includes an inlet that is provided on a surface of the boom positioned below a plane of the rotation of the one or more blades, and

the inlet faces opposite to a direction of a movement of the rotating one or more blades.

2. The aircraft according to claim 1 , wherein the inlet is provided between an upper portion and a side portion of the boom.

3. The aircraft according to claim 1 , wherein the inlet is provided on the boom and tilted relative to the rotational axis of the rotor to face toward a rotational direction of the one or more blades with respect to an upward direction.

4. The aircraft according to claim 2 , wherein the inlet is provided on the boom and tilted relative to the rotational axis of the rotor to face toward a rotational direction of the one or more blades with respect to an upward direction.

5. The aircraft according to claim 1 , wherein the airflow guide structure further includes an outlet provided on a lower side of the boom.

6. The aircraft according to claim 2 , wherein the airflow guide structure further includes an outlet provided on a lower side of the boom.

7. The aircraft according to claim 3 , wherein the airflow guide structure further includes an outlet provided on a lower side of the boom.

8. The aircraft according to claim 5 , wherein the outlet is positioned on a side of a lower portion of the boom, the side following a rotational direction of the one or more blades relative to a rotational axis of the rotor.

9. The aircraft according to claim 5 , wherein the outlet is positioned on a side of a lower portion of the boom, the side being opposite from the inlet with respect to the rotational axis of the rotor.

10. The aircraft according to claim 8 , wherein the outlet is positioned on a side of a lower portion of the boom, the side being opposite from the inlet with respect to the rotational axis of the rotor.

11. The aircraft according to claim 5 , wherein the outlet is formed to face more downward relative to the inlet.

12. The aircraft according to claim 8 , wherein the outlet is formed to face more downward relative to the inlet.

13. The aircraft according to claim 5 , wherein the radiator is arranged between the inlet and the outlet within the boom.

14. The aircraft according to claim 8 , wherein the radiator is arranged between the inlet and the outlet within the boom.

15. The aircraft according to claim 13 , wherein the radiator is tilted relative to the rotational axis of the rotor and one plane of the radiator faces toward the inlet and/or another plane of the radiator faces toward the outlet.

16. The aircraft according to claim 5 , wherein the boom includes a lower-side beam that is installed on a lower side of the outlet.

17. The aircraft according to claim 8 , wherein the boom includes a lower-side beam that is installed on a lower side of the outlet.

18. The aircraft according to claim 1 , wherein the boom includes an upper-side beam that is installed on an upper side of the inlet.

19. The aircraft according to claim 2 , wherein the boom includes an upper-side beam that is installed on an upper side of the inlet.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 21, 2022
From: ASANUMA, MASAHIKO; MASHIO, SUSUMU
To: HONDA MOTOR CO., LTD.
Reel/Frame 062177/0782 →
Priority Claims (2)
JP 2021-208129 · Dec 22, 2021 · national
JP 2021-208182 · Dec 22, 2021 · national
Continuity (1)
Related Publication 20230192311A1 · Jun 22, 2023
References Cited (53)
US 6293491B1 · Wobben · 2001 [cited by applicant]
US 9120560B1 · Armer · 2015 [cited by applicant]
US 9415878B2 · Wetzel · 2016 [cited by applicant]
US 9586690B2 · Rajashekara · 2017 [cited by applicant]
US 9845150B2 · Kroo · 2017 [cited by applicant]
US 9932108B1 · Viele · 2018 [cited by applicant]
US 10029785B2 · Niedzballa · 2018 [cited by applicant]
US 10081436B1 · Tian · 2018 [cited by applicant]
US 10131426B2 · Judas · 2018 [cited by applicant]
US 10150560B2 · Tighe · 2018 [cited by applicant]
US 10350960B1 · Long · 2019 [cited by applicant]
US 10358230B2 · Sahu · 2019 [cited by applicant]
US 10472064B2 · Tian · 2019 [cited by applicant]
US 10577091B2 · Parks · 2020 [cited by applicant]
US 10836485B2 · Welsh · 2020 [cited by applicant]
US 20130020429A1 · Kroo · 2013 [cited by applicant]
US 20150232191A1 · Wetzel · 2015 [cited by applicant]
US 20150367950A1 · Rajashekara · 2015 [cited by applicant]
US 20160207625A1 · Judas · 2016 [cited by applicant]
US 20160236774A1 · Niedzballa · 2016 [cited by applicant]
US 20170081040A1 · Pal · 2017 [cited by applicant]
US 20170267341A1 · Thomassin · 2017 [cited by applicant]
US 20180002023A1 · Tian · 2018 [cited by applicant]
US 20180072431A1 · Sahu · 2018 [cited by applicant]
US 20180093770A1 · Welsh · 2018 [cited by applicant]
US 20180105268A1 · Tighe · 2018 [cited by examiner]
US 20180170553A1 · Wang · 2018 [cited by applicant]
US 20180305005A1 · Parks · 2018 [cited by applicant]
US 20190047342A1 · Dietrich · 2019 [cited by applicant]
US 20190127056A1 · Weekes · 2019 [cited by applicant]
US 20190233107A1 · Tian · 2019 [cited by applicant]
US 20190323429A1 · McGee · 2019 [cited by applicant]
US 20190337613A1 · Villa · 2019 [cited by applicant]
US 20200115045A1 · Mermoz · 2020 [cited by applicant]
US 20220041275A1 · Tian · 2022 [cited by applicant]
US 20220363382A1 · McCann · 2022 [cited by examiner]
US 20230036722A1 · Hanamitsu · 2023 [cited by applicant]
US 20230174247A1 · Ahyow · 2023 [cited by applicant]
CN 105939930A · 2016 [cited by applicant]
CN 213974458U · 2021 [cited by applicant]
DE 102016125656A1 · 2018 [cited by applicant]
JP H0427698A · 1992 [cited by applicant]
JP H11324672A · 1999 [cited by applicant]
JP 5676824B2 · 2015 [cited by applicant]
JP 2017081040A · 2017 [cited by applicant]
JP 6469488B2 · 2019 [cited by applicant]
JP 2020515031A · 2020 [cited by applicant]
JP 2020131781A · 2020 [cited by applicant]
JP 2021154802A · 2021 [cited by applicant]
WO 2021210065A1 · 2021 [cited by applicant]
WO 2021222528A1 · 2021 [cited by applicant]
Office Action issued for counterpart Japanese Application No. 2021-208129, transmitted from the Japanese Patent Office on Jun. 4, 2024 (drafted on May 30, 2024). [cited by applicant]
Office Action issued for counterpart Japanese Application No. 2021-208182, transmitted from the Japanese Patent Office on Jun. 4, 2024 (drafted on May 30, 2024). [cited by applicant]
Cited By (5)
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