Airfoil fins for the passive cooling of electronic devices on electrical aircrafts

An electric motor assembly comprising:

• a motor housing having an end face;
• a motor within the motor housing;
• a propulsion component coupled to the motor, wherein the propulsion component generates a propulsion air-flow downstream the propulsion component;
• and
• an electronics assembly disposed on the end face of the motor housing, the electronics assembly comprising:
• an electronic device casing configured to house one or more electronic devices, wherein the electronic device casing is downstream the propulsion air-flow;
• a plurality of fins extending from the electronic device casing, wherein at least one of the plurality of fins comprise an airfoil fin comprising:
• a high-pressure side comprising an air inlet that receives the propulsion air-flow;
• an inner conduit fluidly coupled to the air inlet running over a portion of the electronic device casing, wherein the inner conduit directs the propulsion air-flow over the portion of the electronic device casing;
• and
• a low-pressure side comprising an air outlet fluidly coupled to the inner conduit, wherein the air outlet expels the propulsion air-flow into the atmosphere.

An Electric Vertical Takeoff and Landing (eVTOL) system comprising:

• a motor housing having an end face;
• a motor within the motor housing;
• at least one propeller mechanically coupled to the motor, wherein the at least one propeller generates a propulsion air-flow downstream the at least one propeller;
• and
• an electronics assembly disposed on the end face of the motor housing, the electronics assembly comprising:
• an electronic device casing configured to house one or more electronic devices, wherein the electronic device casing is downstream the propulsion air-flow;
• a plurality of fins extending from the electronic device casing, wherein at least one of the plurality of fins comprise an airfoil fin comprising:
• a high-pressure side comprising an air inlet that receives the propulsion air-flow;
• an inner conduit fluidly coupled to the air inlet running over a portion of the electronic device casing, wherein the inner conduit directs the propulsion air-flow over the portion of the electronic device casing;
• and
• a low-pressure side comprising an air outlet fluidly coupled to the inner conduit, wherein the air outlet expels the propulsion air-flow into the atmosphere.