Propeller assembly, power assembly, and aircraft

A power assembly comprising:

• a first driving device;
• a second driving device;
• and
• a propeller assembly including:
• a first propeller connected to the first driving device and including a first propeller blade including:
• a first propeller root;
• a first propeller tip opposite to the first propeller root;
• a first propeller pressure surface;
• and
• a first propeller suction surface opposite to the first propeller pressure surface;
• and
• a second propeller connected to the second driving device and including a second propeller blade including:
• a second propeller root;
• a second propeller tip opposite to the second propeller root;
• a second propeller pressure surface;
• and
• a second propeller suction surface opposite to the second propeller pressure surface;
• wherein:
• the first propeller tip is configured to extend obliquely along a span direction of the first propeller blade toward a side where the first propeller suction surface is located;
• and
• the second propeller tip is configured to extend obliquely along a span direction of the second propeller blade toward a side where the second propeller pressure surface is located.

An aircraft comprising:

• a body;
• and
• a power assembly connected to the body and including:
• a first driving device;
• a second driving device;
• and
• a propeller assembly including:
• a first propeller connected to the first driving device and including a first propeller blade including:
• a first propeller root;
• a first propeller tip opposite to the first propeller root;
• a first propeller pressure surface;
• and
• a first propeller suction surface opposite to the first propeller pressure surface;
• and
• a second propeller connected to the second driving device and including a second propeller blade including:
• a second propeller root;
• a second propeller tip opposite to the second propeller root;
• a second propeller pressure surface;
• and
• a second propeller suction surface opposite to the second propeller pressure surface;
• wherein:
• the first propeller tip is configured to extend obliquely along a span direction of the first propeller blade toward a side where the first propeller suction surface is located;
• and
• the second propeller tip is configured to extend obliquely along a span direction of the second propeller blade toward a side where the second propeller pressure surface is located.