公开(公告)号：US20240116627A1

公开(公告)日：2024-04-11

申请号：US18163372

申请日：2023-02-02

Applicant: Archer Aviation, Inc.

Inventor： Karthik Kumar BODLA ,  Bharat TULSYAN ,  Christopher M. HEATH ,  Kerry MANNING ,  Alan D. TEPE

IPC: B64C29/00 ,  B64D33/08

CPC classification number: B64C29/0033 ,  B64D33/08

Abstract: A VTOL aircraft includes a plurality of lift propellers configured to rotated by lift motors to provide vertical thrust during takeoff, landing and hovering operations. The lift propellers are configured to generate a cooling airflow to cool the lift motors during use. During a cruise operation when the VTOL aircraft is in forward motion, the lift propellers may be stowed in a stationary position. Therefore, the cooling airflow may be reduced or eliminated when it is not needed.

公开(公告)号：US20250083807A1

公开(公告)日：2025-03-13

申请号：US18956397

申请日：2024-11-22

Applicant: Archer Aviation Inc.

Inventor： Karthik Kumar BODLA ,  Bharat TULSYAN ,  Christopher M. HEATH ,  Kerry MANNING ,  Alan D. TEPE

IPC: B64C29/00 ,  B64D33/08

Abstract: An apparatus for aircraft propulsion includes a propeller and a hybrid-cooled electric engine mounted to a support structure and configured to rotate the propeller. The electric engine is located in an enclosure, with a first heat transfer element thermally coupled to the electric engine via a fluid flow path, partially located outside the enclosure. A second heat transfer element, integral to or thermally coupled to the electric engine, provides air cooling. Both heat transfer elements are housed within the aircraft's support structure. At least one air inlet on the upper side of the support structure receives propeller downwash. A first cooling path directs a portion of the downwash from the air inlet to the first heat transfer element, and a first air outlet exhausts the downwash.