The Cygnet (or Aerodrome #5) was an extremely unorthodox early Canadian aircraft, with a wall-like "wing" made up of 3,393 tetrahedral cells.

[1] It was a powered version of the Cygnet tetrahedral kite designed by Dr Alexander Graham Bell in 1907 and built by the newly founded Aerial Experiment Association.

Bell's experiments with tetrahedral kites had explored the advantages of utilizing great banks of cells to create a lifting body leading to the Cygnet I.

Rebuilt again as the Cygnet III with a more powerful 70 hp Gnome Gamma engine, its final flight was on 19 March 1912, at Bras d'Or Lake, Nova Scotia, piloted by John McCurdy.

After a final trial on 17 March, the tetrahedral cell bank failed structurally, leaving the aircraft irreparably damaged.