La-174TK by S.A.Lavochkin

20k La-174TK on snow covered airfield form The Jet Genesis

Experimental fighter, development of the La-156 with thin non-swept wing (TK stays for Tonkoe Krylo, Thin Wing).
More powerful engine (1*1590kg NII-1) was installed.
Trials in early 1948 proved that straight wing has no chances to compete with swept one at high flight speeds. All steed against the La-156 was gained due to new powerplant. La-174TK was the last straight-wing aircraft of S.A.Lavochkin team.
One built.

8k color drawing form The Jet Genesis

Predecessors Modifications

None. Last of the line.

References Links
  • "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.2 p.349;
  • "Front is going across KB"
  • by M.S.Alazorov M.:Znanye, 1987

  • La-174TK, Lavochkin
  • La-174TK at The Jet Genesis
  • Lavochkin aircraft at WWW.AVIATION.RU
  • 32k b/w La-174TK from "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.2 p.350

    Technical information
    Type La-174TK
    Function Experimental Fighter
    Year 1948
    Crew 1
    Engines 1*1590kg NII-1
    Length 9.41m
    Wingspan 8.64m
    Wing area 13.52m2
    Empty weight 2310kg
    Loaded weight 3315kg
    Wing load 246kg/m2
    Trust-to-Weight 0.48
    Speed at 0m 970km/h
    Speed at 5000m 965km/h
    Range 960km
    Flight Endurance 1h30min
    Ceiling 14600m
    5000m 2.5min
    Guns 3*23mm cannons NS-23
    Modified February 23, 1998
    Alexandre Savine