As I think,that was not the end of this company, it involved in another American competition as I know ?.
Yeah, nah.
Your "anther helicopter Project from the same company" in the first post was just the original AC-35 layout. Those outrigger rotors were replaced by a single rotor disc (as seen on the preserved prototype). The Autogiro Company of America did work at further developing the AC-35 airframe but nothing came of this. The name Autogiro Company of America did persist but it is a mistake to think of it as a single, independent entity. Overall, the corporate history of the Philadelphia-based [1] Autogiro Company of America is rather confusing.
The Autogiro Company of America began as a division of the privately-owned Pitcairn Aircraft Company (iteself formed in 1924/25). Initially, ACA was referred to as the Pitcairn-Cierva Autogiro Company of America - eg: as the publisher of
The Autogiro in 1930. [2] According to some sources, this Pitcairn-Cierva Autogiro Company of America was formed in 1929.
Other say that this 1929 division was simply titled as the Pitcairn-Cierva Autogiro Company (with no 'of America' appended). Either way, the original object of the company was research and development as well the exploitation of Pitcairns exclusive US licenses for Autogiros (using that capital letter and 'i' spelling preferred by Juan de la Cierva). That would include the issuing of US Autogiro licenses to the Kellett Aircraft Corporation and Buhl Aircraft Company.
As a legal entity, the ('no Pitcairn-Cierva') Autogiro Company of America seems to first appear in 1931. Perhaps that was because general R&D and license exploitation had been eclipsed by a focus on evolving the wingless Pitcairn PA-22 Autogiro prototype into your roadable AC-35. Initially, the plan seems to have been to separate the production of Autogiros at ACA from the building of conventional aircraft at the Pitcairn Aircraft Company. However, that scheme was never really implemented.
By 1933, production of the Pitcairn PA-5 to PA-8
Mailwing biplane series was coming to an end. [3] As a result, it was decided to focus exclusively on Autogiros and, through a merger, Pitcairn Aircraft Company was fully absorbed into the Autogiro Company of America. All of this was long before the AC-35 design was complete. So, it
could be argued that all Pitcairn designs after 1933 were technically ACA types ... except, in practice, only the AC-35 was ever regarded as product of the Autogiro Company of America.
Somehow, that Autogiro Company of America name never caught on and 'Pitcairn' continued to be used. In 1938, the Autogiro Company of America name was finally dropped with the firm being renamed as the Pitcairn-Larsen Autogiro Company. [4] Two years later, Pitcairn-Larsen was renamed as AGA Aviation Corporation (as in the AGA XLRG-1 and CG-9 troop gliders). [5] Then, in 1942, AGA was taken over by G&A Aviation Co. [6] (as in ex-PA-44 XO-61 contract). This coincided with Pitcairn Field and its facilities being taken over by the US government as NAS Willow Grove. In 1943, G&A Aviation was taken over by Firestone (which Wiki has confused with fellow tire-maker, Goodyear).
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[1] Philadelphia was listed on publications but the precise location of the company HQ and factory was Pitcairn Field at Willow Grove, PA - 21 km north of Philadelphia.
[2]
The Autogiro, Pitcairn-Cierva Autogiro Company of America, Philadelphia, PA, 1930
[3] Note that H.F. Pitcairn had also sold off all of Pitcairn Aviation's existing air mail contracts in order to fund his Autogiro development and production in the first place.
[4] Aeronautical engineer Agnew Emiel Larsen had met Harold Pitcairn while both were apprentices at Curtiss . Larsen left Thomas-Morse in 1925 to join Pitcairn in pursuing Cierva's Autogiro concepts.
[5] AGA stood for 'Autogyros, Gliders and Airplanes' (although that may have originally been with a Cierva /Pitcairn spelling - ie: 'Autogiros, Gliders and Airplanes'). See Jos Heyman's
United States Military Aircraft:
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https://usmilitaryaircraft.wordpress.com/wp-content/uploads/2015/05/airf-cg.pdf
[6] G&A stood for 'Gliders and Airplanes'. This firm will be seen listed/mislisted as G and A Aviation, G&A Aviation Corporation, G & A Aircraft, Inc., etc.
