I-207 No1 and No2 (product '7') by A.A.Borovkov and I.F.Florov

41k b/w I-207 (product '7') "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.2 p.66

D
espite the crash of No7211 prototype, in May 1938 designers were invited for meeting with Aviation Industry leadership, and in Fall 1938 they were assigned to bring '7211' to a production state.
First two prototypes had fixed landing gear like on the No7211. They had open cockpit. More powerful engines were installed, and corresponding changes to the cowling were introduced. Air intake was installed on top of the cowling. Machineguns were fitted, gun blast tubes installed.
Both 'products 7' were ready on Spring 1939 and flown by P.M.Stefanovskij, L.M.Maksimov and N.I.Nikolaev.
It was obvious that aircraft with fixed landing gear are obsolete. In addition, small plane size restricted propeller diameter. Small 2-blade VISh-26 propeller (2.8m) demanded a gearbox.
Those requirements were fulfilled in products '8' and '9'.
PredecessorsModifications

7211

I-207
products '8','9'

ReferencesLinks
  • "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.2 p.65;
  • I-207, Borovkov-Florov
  • Technical data
    Type I-207 'product 7' No1 I-207 'product 7' No2
    Function Fighter Prototype
    Year Spring 1939
    Crew 1
    Engines 1*800/930hp M-62 1*930/1100hp M-63
    Length 6.35m
    Wingspan 7.0m
    Wing area 18.0m2
    Loaded weight 1950kg
    Wing load 108kg/m2
    Power load 2.0kg/hp 1.8kg/hp
    Speed at 0m 387km/h 397km/h
    Speed at 4000m 436km/h 423km/h
    Landing Speed 115km/h
    Takeoff Roll 196m n/a
    Turn time 19.5sec 18.5sec
    Range 700km n/a
    Flight Endurance 2h
    Ceiling 9150m 9200m
    Climb
    5000m 6.2min 6.7min
    Armament
    Guns 4*7.62mm ShKAS
    550rpg
    Created November 25, 1998
    by Alexandre Savine
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