Caudron C.21
Development and Specifications
The twin-engine biplane Caudron C.21 appeared in November 1917. Initially, it was equipped with 80 hp (60 kW) Rhone rotary engines, but these were later replaced by more powerful 120 hp (90 kW) engines.
Wartime Non-Deployment
Aircraft of this type were never used during World War I. However, for post-war commercial use, they were redesigned, resulting in the C.21bis modification.
Post-War Reconfiguration and Flights
Immediately after the war, the C.21 itself undertook a series of ‘pioneering’ flights, showcasing its potential beyond initial military applications.
Technical Specifications
| Modification | C.21 |
| Wingspan, m | 13. 50 |
| Length, m | 7.94 |
| Wing area, m2 | 39. 90 |
| Empty weight | 915 |
| Maximum takeoff weight | 1235 |
| Engine type | 2 Piston engines Le Rhone 9C |
| Power, hp | 2 x 80 |
| Maximum speed, km/h | 140 |
| Cruising speed, km/h | 115 |
| Service ceiling, m | 4000 |
| Crew | 4 |
Image and diagram gallery of the Caudron C.21
 C.21 |
 C.21 |
ArchivoAéreo Editorial Team
A group of aviation researchers and enthusiasts dedicated to documenting and preserving global aeronautical history. All articles are reviewed to ensure historical accuracy.
Sources & Accuracy
The information presented in this technical sheet has been compiled from declassified flight manuals, historical archives, and specialized literature. While we strive for maximum accuracy, some performance data may vary depending on the specific variant or operational conditions.