Douglas C-1
The Douglas C- 1 was a transport aircraft of the U.S. manufacturer Douglas Aircraft Company in the 1920s. The C-1 was the first aircraft in the valid from 1925 to 1962 designation system for military transport aircraft. The with the XC -142 actually finished sequence is continued further since 2005.
History
Douglas in 1925 received from the War Department its first contract for the construction of transport aircraft. The first C-1 held its first flight on May 2, 1925 in Santa Monica through. By the end of the year, all nine ordered machines were shipped to the United States Army Air Service ( USAAS ), of which a copy ( 25-426 ) was tentatively fitted with a Liberty V -1650 -5 planetary gears and renamed C -1A. The C -1A completed a pilot program for a few months with different engine cowlings, landing gear drives and skid before it was changed back to the default equipment. However, they retained the modified enlarged vertical stabilizer.
1926 ordered the USAAS seven improved C -1C, which had an increased span, a longer fuselage and a tail umkonstruiertes. In addition, noise-reducing exhaust manifolds were used, and the previously wooden hull bottom replaced by a metal. As an ambulance four chairs could be transported. Ten other C -1C in 1927 ordered and delivered in the same year.
In use all the machines have not been allocated to transport units, but are distributed singly or in small groups on airfields. A C -1 ( 25-432 ) led together with a Fokker C- 2 and a specially modified long-range Boeing Model 95 (Boeing " Hornet Shuttle" ) air refueling trials. 1927 was the C-1 and a type-certificate, but it is not known whether copies were actually used for civilian purposes.
Construction
The C-1 was very similar to the previous Douglas patterns DWC and O 2 under construction, but had significantly larger dimensions. They also had a welded body structure with an aluminum cladding in the region upstream of the wing leading edge. The rest of the fuselage was covered with fabric. Pilot and co-pilot and flight mechanic sat side by side in an open cockpit. The enclosed passenger cabin with a length of 3.05 m, a width of 1.17 m and 1.27 m height usually had six seats, in extreme cases, eight people could be transported. For freight transport, the seats were removed and a flap in the bottom of the fuselage also bulky cargo pieces the size of a Liberty engine and a maximum weight of 1140 kg could be loaded.