| Technical data | ||
|---|---|---|
| Type | R-3LD | |
| Function | Reconnaissater | |
| Year | 1927 | |
| Crew | 2 | |
| Engines | 1*450hp Lorraine-Dietrich | |
| Length | 9.89m | |
| Wingspan | 13.0m | |
| Wing area | 37.0m2 | |
| Empty weight | 1340kg | |
| Loaded weight | 2090kg | |
| Wing Load (kg/m2) | 56.5 | |
| Power load (kg/hp) | 4.65 | |
| Speed at 0m | 204km/h | |
| Speed at 3000m | 193km/h | |
| Landing Speed | 85km/h | |
| Turn time | 21sec | |
| Ceiling | 4920m | |
| Climb | ||
| 1000m | 4.2min | |
| 2000m | 9.4min | |
| 3000m | 16.6min | |
| 4000m | 27.9min | |
| Armament | ||
| Guns | 2*mg | |
| Bombs | 200kg | |
R-3LD, PS-3 by A.N.Tupolev
|
During construction an trials of R-3 variants about 100 French-built 450hp 'Lorraine-Dietrich' engines were purchased. Installation of this engine on R-3 allowed to improve aircraft balance (moving CG forward) and gave aircraft more power.
Construction and flight trials of the pre-series aircraft were completed in June 1927, and new R-3 variant was put into production as a R-3LD (LD for 'Lorraine-Dietrich'). After minor refinement R-3LD production was launched at '10th Anniversary of October (revolution)' Factory.
Until Summer 1929 79 R-3LD were built. One was transferred to Aeroflot under designation PS-3. It served in Yakutia as a mail/newspaper delivery aircraft.
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