Technical data
Type PM-1, P-2
Function Passenger
Year 1925
Crew 1
Engines 1*260hp 'Maybach'
Length 11.0m
Wingspan 15.5m
Wing area 38.5m2
Empty weight 1380kg
Loaded weight 2360kg
Wing Load (kg/m2) 61.5
Power load (kg/hp) 9.1
Speed at 0m180km/h
Speed at 3000m 150km/h
Landing Speed 90km/h
Landing Roll 15sec
Takeoff Roll 22sec
Range 1200km
Flight Endurance 7.0h
Ceiling 4100m
Climb
1000m 8.0min
2000m 17.0min
3000m 29.0min
4000m 50.0min
Payload
Seats 5
Load 540kg

PM-1, P-2 by N.N.Polikarpov and A.A.Semenov

51k b/w "History of aircraft construction in the USSR", Vol.1 p.358

In 1924 first passenger airlines were open in the USSR. Necessity to replace German aircraft dominated domestic lines became obvious. First indigenous passenger aircraft (AK-1 and GAZ-5) were built in 1923, but airliners with better performance and larger capacitance were needed.

Aviatrest ordered Factory 1 creation of new passenger aircraft, allowing only 3 months for design and assembly! Why? Because aircraft was scheduled to participate in propaganda flight Moscow-Bejing in June 1925. Eventually this demand was fulfilled, and on June 8 (90 days since first line on the paper) the PM-1 was completed. General layout belongs to engineer A.A.Semenov, detailed design belongs to Technical Division of Factory-1 lead by N.N.Polikarpov.

PM-1 was an all wooden biplane with fabric wing cover, of clean airdynamic shape. Honeycomb retractable radiator was installed under the engine. First flight by A.I.Zhukov was performed on June 10 1925, exact day of the Moscow-Bejing flight. PM-1 did not join the team.

Aircraft passed all trials without complications, and batch of 10 was ordered.

Since July 26 some demonstration flights were performed, including non-stop flight Moscow-Leningrad. Later PM-1 was used on Moscow-Berlin line (for ~1.5 years). It was damaged during emergency landing, when engine gave up (over Germany). At the time Maybach engines were rejected by Aviatrest. Since 1925 superior passenger aircraft by K.A.Kalinin entered production, and PM-1 was not restored.


ReferencesLinks
  • "History of aircraft construction in the USSR", Vol.1 p.357-359;
  • PM-1 at Virtual Aircraft Museum

  • Created August 25, 1998 Back to
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