Technical data
Type R-3 proto- type R-3 pre- series R-3 Prole- tarij
Function Reconnaissater Propa- ganda
Year 1925 1926 1926
Crew 2 2 2
Engine Liberty Napier Lion
Power 400hp 450hp
Size (m)
Length 9.4 9.4 9.4
Wingspan 13 13 13
Wing area (m2) 37 37 37
Weights (kg) and loads
Empty 1335 1390 1412
Loaded 2085 2144 2173 (2400?)
Wing Load (kg/m2) 56.4 58.0 63.2
Power load (kg/hp) 5.21 4.76 4.83
Speed (km/h)
Speed at 0m 207 218 226
Speed at m 175 136 ?
Landing Speed 85 85 85
Roll (m, [sec])
Landing 180 [14] [14] [19]
Takeoff 200 [15] [13] 160 [10]
Maneuverability
Turn time 27sec - 21
Ceiling (m)
Max. 4400 4310 5110
Climb (min)
1000m 4.7 4.6 3.4
2000m 10.3 9.5 7.2
3000m 18.3 15.9 11.5
4000m 33.5 27.6 17.3
5000m - - 31.2
Armament
Guns 2*mg -
Bombs 200kg -

R-3, ANT-3, 'Proletarij' by A.N.Tupolev

28k b/w "History of aircraft construction in the USSR", Vol.1 p.369

All-metal biplane reconnaissater. ANT-3 inherited fuselage of ANT-2 - triangular section, narrow and deep. It allowed gunner to operate his gun while staying on feet. Upper wing was almost flush with fuselage.

Aircraft was ordered in the beginning of 1924, and in four months (April 1924) project was ready. Powered by 400hp (Liberty), aircraft was built in July 1925 and flown through factory trials in August by I.I.Phillipov. State trials at NOA lasted until April 1926 (pilot M.M.Gromov and observer V.S.Vakhmistrov). Some secondary shortcomings were mentioned, but no final conclusion came out.

Nonetheless since December 1925 the pre-series ANT-3 was under assembly at GAZ-5 factory, as well as few ANT-3 for advertisement (or propaganda?) flights over Europe. Following recommendations of M.M.Gromov, 450hp 'Napier Lion' engines were installed on those aircraft. N-shaped wing struts were replaced by K-shaped. Overall performance was substantially improved (see table).

In August 30 - September 2 1926 on one of those aircraft (named "Proletarij") M.M.Gromov with mechanic E.V.Radzevich performed flight Moscow - Berlin - Paris - Vienna - Prague - Warsaw - Moscow, covering 7150km in 34h 15min of flight time.

Despite R-3 with Napier Lion engine fulfilled all requirements to reconnaissater aircraft, id did not enter production. 'Napier Lion' was too expensive. In November 1925 work started on series R-3 modification for M-5 engine, but this story may be found on a different page.

PredecessorsModificationsDevelopments

ANT-2
R-3 with M-5 engine
ANT-10 R-7

R-3LD

ANT-5

References
  • "History of aircraft construction in the USSR", Vol.1 p.368;
  • Links
  • R-3
  • ANT-3 at the Virtual Aircraft Museum
  • ANT-3, Tupolev
  • R-3, Tupolev
  • Created January 25, 1996
    Modified August 28, 1998;
    Back to
    Main Gate