Celestino Rosatelli was an Italian aeronautics engineer

Aerospace engineering

Aerospace engineering is the primary branch of engineering concerned with the design, construction and science of aircraft and spacecraft. It is divided into two major and overlapping branches: aeronautical engineering and astronautical engineering...

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Celestino Rosatelli was born in Belmonte in Sabina

Belmonte in Sabina

Belmonte in Sabina is a comune in the Province of Rieti in the Italian region Latium, located about 60 km northeast of Rome and about 10 km southeast of Rieti....

, close to Rieti

Rieti

Rieti is a city and comune in Lazio, central Italy, with a population of c. 47,700. It is the capital of province of Rieti.The town centre rests on a small hilltop, commanding a wide plain at the southern edge of an ancient lake. The area is now the fertile basin of the Velino River...

, to Bernardino Rosatelli and Apollonia Santini. His parents noticed his brilliant mathematical skills and were able to support his studies. Sent to Rome to study engineering, he graduated in 1910. Afterwards, he designed aircraft in Turin for Fiat.

Rosatelli designed some of most advanced aircraft of his time, such as the Fiat CR.42

Fiat CR.42

The Fiat CR.42 Falco was a single-seat sesquiplane fighter which served primarily in Italy's Regia Aeronautica before and during World War II. The aircraft was produced by the Turin firm, and entered service, in smaller numbers, with the air forces of Belgium, Sweden and Hungary...

 and Fiat BR.20

Fiat BR.20

The Fiat BR.20 Cicogna was a low-wing twin-engine medium bomber produced from mid-1930s until the end of World War II by the Turin firm. When it entered service in 1936 it was the first all-metal Italian bomber and it was regarded as one of the most modern medium bomber of the world...

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He died in Turin in 1945.