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SAF Chelidon (Swallow)


Advanced Trainer / Reconnaissance Biplane Prototype


Aviation / Aerospace

SAF managed just a single prototype of its Chelidon biplane - the aircraft arriving too late in the 1920s to impress even the Greek Navy.



Authored By: Staff Writer | Last Edited: 5/27/2020 | Content ©www.MilitaryFactory.com
During the 1920s, Greece took its first tangible steps towards an indigenous aeroplane manufacturing capability with the establishment of its State Aircraft Factory (SAF). its first offering became the "Velos" of 1926 based in the Blackburn "Dart" torpedo bomber biplane. Following this modestly successful debut was the "Chelidon" (translating to "Swallow") of 1927 which was developed, again with assistance from Blackburn, to satisfy a Hellenic Navy requirement - this time for a two-seat advanced trainer / reconnaissance platform. However, despite some eighteen units ordered by the Navy service, only a single prototype ever materialized.

After just eight weeks of design and development work, the aircraft was unveiled for its first flight on February 20th, 1927. Key design features included its single-bay biplane wing arrangement, twin tandem seating, and Salmson 9AC 9-cylinder air-cooled radial piston engine of 120 horsepower installed at the nose. The engine drove a two-bladed propeller in typical fashion and ground-running was accomplished through a "tail-dragger" arrangement featuring a fixed twin-wheeled support at forward center mass and a simple skid at the rear. Like the Velos before it, the Chelidon was designed as configurable, from a land-based plane to seaplane and back again as needed.

As finalized, the aircraft sported a running length of 19 feet and a wingspan of 26.9 feet. Maximum speed, as tested, reached 93 miles-per-hour, suitable for the roles envisioned of the machine. Future serial production was to involve the Armstrong Siddeley "Lynx" engine for improved power and performance but was not to be.

Before the end of 1926, the Hellenic Navy committed to an order for eighteen of the type until it was found, through additional testing, that the design was more-or-less obsolescent when compared to contemporaries of the day. As such, the sole completed prototype example was relegated to training for SAF company personnel and managed to survive until 1938 before being given up for good.


Specifications



Year:
1927
Status
Cancelled
Crew
2
[ 1 Units ] :
State Aircraft Factory (SAF) - Greece
National flag of Greece Greece (cancelled)
- Reconnaissance (RECCE)
- X-Plane / Developmental
- Training
Length:
19.03 ft (5.8 m)
Width:
26.74 ft (8.15 m)
(Showcased structural dimension values pertain to the SAF Chelidon production model)
1 x Salmson 9AC 9-cylinder air-cooled radial piston engine developing 120 horsepower and driving a two-bladed propeller unit at the nose.
(Showcased powerplant information pertains to the SAF Chelidon production model)
Max Speed:
93 mph (150 kph; 81 kts)
(Showcased performance values pertain to the SAF Chelidon production model; Compare this aircraft entry against any other in our database)
None.
(Showcased armament details pertain to the SAF Chelidon production model)
"Chelidon" - Base Series Name; single prototype example completed and flown before program cancellation.
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