Jet Powered Research
Italy, like most major nations, had been working on the potential of jet-powered aircraft through the 1930's. In contrast to the other nations who hid their programmes under blankets of secrecy, the Italian programme was relatively open and well publicised, as Mussolini in his typical style wanted the international acclaim of having the first jet-powered aircraft. This eventually led to the Caproni Campini N.1 being recognised as having undertaken the world’s first jet powered aircraft flight on 27th August 1940, whereas it later was recognised that Germany had already secretly flown the Heinkel He 178 exactly 1 year to the day before.
Secondo Campini started work on jet propulsion in 1931, and in proving his concept in 1932 had inadvertently invented the jet boat. While no orders were received for his marine technology, the design was forbidden for sale outside of Italy and was soon forgotten. Campini was able to attract interest in an aviation application for his engine system in 1934 though, and as an independent designer formed an arrangement with Caproni to develop a pair of prototype aircraft for the Regia Aeronautica. The proposed Caproni N.1 was a large two-seat machine, following on closely from Campini’s earlier CS.500 and CS.600 projects. Campini called his engine system a “thermojet”, although “motorjet” had already been patented in 1917 for this engine type. The weakness in the N.1 was the piston engine chosen to power the system, an Isotta-Fraschini L.121 RC.40, as its relatively low horsepower for the size of the aircraft it was powering led to the N.1’s performance being very poor.
Development progressed smoothly, and the first prototype was able to take to the air under its own power in August 1940. This event was treated with great fanfare and a demonstration of the technological prowess of fascist Italy. But initial testing revealed several issues including the poor performance, most annoyingly a very rapid heat buildup from the engine system, necessitating all flights being undertaken with the canopies open – maybe not a problem for Italian pilots who wanted to feel the wind in their hair anyway.
The second prototype was completed in early 1941, and the two aircraft performed the first jet formation flight soon after. As a part of the victory celebrations following the surrender of Yugoslavia the two N.1 aircraft, repainted in the national colours, overflew Rome in formation showing the world Italy’s technological superiority.
But the aircraft were nothing more than technology demonstrators with little potential for practical development. However, as “proof of concept” vehicles they were very successful, and with Mussolini’s support further development of motorjet aircraft was started at Caproni, while Campini transferred to Reggiane to work on creating a motorjet fighter based on their new R.2001.