Mignet Pou-du-Ciel

Flying Flea series
Mignet HM.14
Role	Sport, personal and trainer aircraft
Manufacturer	homebuilt aircraft
Designer	Henri Mignet
First flight	10 September 1933 (HM.14)
Introduction	1933
Produced	1933-today
Unit cost	USD$350 (in 1933) US$9,000-$18,000 (HM.290E in 2007)

The Flying Flea (Pou du Ciel literally "Louse of the Sky" in French) is a large family of light homebuilt aircraft first flown in 1933.

The odd name comes from the French nickname for the Ford Model T automobile, "Pou de la Route" or "Louse of the Road" because Henry Ford's economy car was so common and initially came only in black. Henri Mignet dreamed of creating a Model T of the air, an airplane for the common man, hence "Pou du Ciel." In the English translation, the term became "Flying Flea." Originally applied only to the HM.14 model, the name has now come to describe the family of aircraft of similar configuration designed by Mignet and others.

The Flying Flea family of aircraft was designed by Frenchman Henri Mignet.

Between 1920 and 1928, Mignet built various prototypes from the HM.1 to the HM.8, a monoplane that was the first of his designs that really flew. Instructions for building the HM.8 Avionnette were published by Mignet in a self-published book—he hand wrote the text and drawings, created photographic plates and printed and bound the books himself—but Mignet was still not satisfied. In particular, he felt that he was not himself a very good pilot and did not like the challenge of coordinating the stick and rudder on a conventional aircraft. He yearned for a simpler solution. Between 1929 and 1933, he continued building prototypes, and testing them in a large field near Soissons. The result of this experimentation with many odd and innovative configurations was the HM.14.

In 1933, Mignet successfully flew for the first time in his HM.14, the original flying flea, and publicly demonstrated it. In 1934, he published the plans and building instructions in his book Le Sport de l'Air. In 1935, it was translated into English in Britain and serialised in Practical Mechanics in the USA, prompting hundreds of people around the world to build their own Flying Fleas.

Mignet's original HM.14 prototype aircraft was powered by a 17 hp (13 kW) Aubier-Dunne 500 cc two stroke motorcycle engine. It had a wingspan of 19.5 feet (5.9 m), a length of 11.5 feet (3.5 m) and a gross weight of 450 lb (204 kg). It had a usable speed range of 25-62 mph (40–100 km/h). In the UK in 1935 and 1936, many aerodynamic and engine developments took place, notably by Stephen Appleby, John Carden and L.E. Baynes.