公开(公告)号：US20230286374A1

公开(公告)日：2023-09-14

申请号：US17690097

申请日：2022-03-09

Applicant: Bell Textron Inc.

Inventor： Joseph Dean Rainville ,  Phalgun Madhusudan

IPC: B60K15/03 ,  B65D1/40

CPC classification number: B60K15/03177 ,  B65D1/40 ,  B60K2015/03046

Abstract: A fuel tank includes an outer wall and a compliant layer disposed within a space at least partially defined by the outer wall. An aircraft includes a fuel cell and a fuel tank having an outer wall and a compliant layer disposed within a space at least partially defined by the outer wall. A method of operating a fuel tank includes providing an external wall and disposing a compliant layer of material within a space of the fuel tank that is at least partially defined by the external wall.

公开(公告)号：US11866169B2

公开(公告)日：2024-01-09

申请号：US16988375

申请日：2020-08-07

Applicant: Bell Textron Inc.

Inventor： Joseph Dean Rainville

IPC: B64C7/02 ,  B64C39/02 ,  H01M8/0267 ,  H01M8/04014 ,  B64U50/19

CPC classification number: B64C7/02 ,  B64C39/024 ,  H01M8/0267 ,  H01M8/04014 ,  B64U50/19 ,  H01M2250/20

Abstract: An unmanned aerial vehicle (UAV) has an air-cooled fuel cell, an air channel comprising a forward facing opening for receiving ram air and connected to the air-cooled fuel cell, and a passive ram air filtration system (PRAFS) configured to filter particulate matter from ram air received into the air channel via the opening.

公开(公告)号：US20220393204A1

公开(公告)日：2022-12-08

申请号：US17339572

申请日：2021-06-04

Applicant: Bell Textron Inc.

Inventor： Joseph Dean Rainville

IPC: H01M8/04746 ,  H01M8/0438 ,  H01M8/04111 ,  B64D41/00 ,  B60L50/70 ,  B60L58/30

Abstract: A method of operating an aircraft includes providing a fuel cell system to power the aircraft, providing an airflow path through the fuel cell system, sensing a change mass air flow rate supplied to a compressor of the fuel cell system, and at least one of adjusting a restriction of airflow entering the airflow path in response to the sensed change in mass air flow rate, adjusting a restriction of airflow exiting the airflow path in response to the sensed change in mass air flow rate, and adjusting an air scoop to gather a different amount of air into the airflow path. A method of operating an aircraft includes sensing a change in ambient pressure supplied to an airflow path and adjusting a restriction of airflow exiting the airflow path in response to a sensed change in ambient pressure.

公开(公告)号：US20220285753A1

公开(公告)日：2022-09-08

申请号：US17193771

申请日：2021-03-05

Applicant: Bell Textron Inc.

Inventor： Joseph Dean Rainville ,  Dakota Easley

IPC: H01M10/625 ,  H01M10/613 ,  H01M10/6568 ,  H01M10/643 ,  H01M10/6566 ,  B64D27/24 ,  B64D33/08 ,  B64C27/32 ,  B60L50/60 ,  B60L58/26

Abstract: An electric-powered aircraft battery pack and associated battery pack cooling system. The battery pack comprises a plurality of thermally conductive cooling plates and at least one battery cell coupled with each cooling plate. Heat generated by the battery cells is transferred by conduction to the associated cooling plate. The heat carried by the cooling plates is then transferred by convection to a fluid medium. In some embodiments, heat is transferred from the cooling plate to ambient air or ram air of the aircraft. In some embodiments, heat is transferred from the cooling plate to coolant liquid of a battery pack cooling system.

公开(公告)号：US11749820B2

公开(公告)日：2023-09-05

申请号：US17339572

申请日：2021-06-04

Applicant: Bell Textron Inc.

Inventor： Joseph Dean Rainville

IPC: H01M8/04746 ,  B60L50/70 ,  B60L58/30 ,  B64D41/00 ,  H01M8/04111 ,  H01M8/0438

CPC classification number: H01M8/04753 ,  B60L50/70 ,  B60L58/30 ,  B64D41/00 ,  H01M8/04111 ,  H01M8/04425 ,  B60L2200/10 ,  B64D2041/005 ,  H01M2250/20

Abstract: A method of operating an aircraft includes providing a fuel cell system to power the aircraft, providing an airflow path through the fuel cell system, sensing a change mass air flow rate supplied to a compressor of the fuel cell system, and at least one of adjusting a restriction of airflow entering the airflow path in response to the sensed change in mass air flow rate, adjusting a restriction of airflow exiting the airflow path in response to the sensed change in mass air flow rate, and adjusting an air scoop to gather a different amount of air into the airflow path. A method of operating an aircraft includes sensing a change in ambient pressure supplied to an airflow path and adjusting a restriction of airflow exiting the airflow path in response to a sensed change in ambient pressure.