Technical data
Type I-17 TsKB-19
Function fighter
Year 1935
Crew 1
Engines 1*750hp M-100
Speed 500km/h
Ceiling 11000m
Range 800km
Armament 4*mg7.62mm

I-17/ TsKB-19, N.N.Polikarpov

The I-17 was a sleek fighter with a water-cooled engine, built for comparison with the stubby radial-engined I-16.

Few built, some used in combat in 1941.

There was a widely used argument against evaporative cooling systems - vulnerability. But... this is a common feature of water-cooled engines (except special cases with armor-shielded cooler like Il-2). Large area of cooling surface is not a weakness - higher probability of combat damage is compensated by relatively lower impact of a hole on the system.

During trials of Stal-6 A.B.Yumashev performed few flights with imitation of a cooler combat damage. Each flight lasted more than 30min! Taking into account that flight endurance of (most) Soviet WW-II single-engine fighters was close to 1hour, damaged fighter could not only return home safely, but do it after the fight is over.

There also was a room for improvement - Stal-6 had single-unit cooler, while segmented system could be even less sensitive to damage.


TsKB-15 - the first prototype;


TsKB-33 used evaporative cooling. Cancelled;

  • "Most cherez vremja" p.43-44

  • More Links...
  • I-17 at Virtual Aircraft Museum
  • I-17, Polikarpov
  • TsKB-19, Polikarpov

  • Modified January 25, 1996 Back to
    Main Gate