Lavochkin La-15

infobox Aircraft
name = La-15
type = Fighter
logo =
manufacturer = Lavochkin

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caption =
designer =
first flight = January 8, 1948
introduction = 1949
retired = 1954
status =
primary user = Soviet Air Force
more users =
produced =
number built = 235
unit cost =
developed from = La-168
variants with their own articles =The Lavochkin La-15 (NATO reporting name 'Fantail'), initially designated La-174, was an early Soviet jet fighter and a contemporary of the Mikoyan-Gurevich MiG-15. Although it had a number of technical advantages over the MiG-15, a combination of easier manufacture and the lower costs as a result led to the MiG-15 being favored, and only small numbers of La-15's were built.

Development

The La-15 was the outcome of a series of development aircraft that began with the Lavochkin "168" (La-168) in 1947 and continued with the "176" (La-176) later in 1948. They were designed for British engines Rolls-Royce Derwent V and Nene, acquired by the Soviets in 1947 and then copied by them as RD-500 and RD-45. The Derwent-powered La-174 (initially called just "174") was designed as a backup for the main program of Nene-powered La-168, in case the British failed to deliver stronger afterburned Nene engine. The first prototype of La-174 was flown just 9 days after its counterpart MiG-15, on January 8, 1948. The first prototype was however lost on May 11, 1948 due to vibrations. Trials were continued with an improved second prototype, designated "174D". From August to September 25, 1948 it underwent state trials. In comparison with the Nene-powered MiG-15 it had almost the same maximum speed and better maneuverability, with somewhat reduced rate of climb. Even while the second prototype of La-174 was undergoing flight trials in August, the type was ordered into production in September 1948. In April 1949 it was given an official military designation La-15.

The La-15 had a barrel-like fuselage, swept wings, and stabilizers mounted high on the fin, almost like a T-tail, all features that gave it a surprisingly close resemblance-especially including the landing gear setup-to the never-built Focke-Wulf Ta 183 German second generation jet fighter design. In basic configuration, it resembled the more famous MiG-15, except for a slightly sleeker appearance and high-mounted wings. It was popular with pilots because of its easy handling and dependability, and its pressurized cockpit was an advantage at high altitude. Nevertheless, official enthusiasm for the La-15 was mild, largely because it was a complex design that required complicated (and expensive) production tooling. With an arrival of the Klimov VK-1 engine (improved Nene), the Soviet authorities decided to produce only one fighter, and they chose the MiG-15bis, despite newest Lavochkin's fighters La-168 and La-176 with VK-1 engine, basing upon the La-15, had better performance. The MiG-15 was somewhat less capable, but easier to mass-produce.

235 La-15s were built, and served with the Soviet Air Force until 1954. A two-seat trainer version was also developed as the La-180 and was to be put into production as the La-15UTI, but as official interest in the La-15 waned, the trainer was cancelled before mass production began and only 2 were made.

Operators

; USSR
* Soviet Air Force

pecifications (La-15)

aircraft specifications
plane or copter?= plane
jet or prop?= jet
ref=
crew= one, pilot
capacity=
length main= 9.56 m
length alt= 31 ft 4 in
span main= 8.83 m
span alt= 29 ft 0 in
height main=
height alt=
area main= 16.2 m²
area alt= 174 ft²
airfoil=
empty weight main= 2,575 kg
empty weight alt= 5,677 lb
loaded weight main= 3,850 kg
loaded weight alt= 8,490 lb
useful load main=
useful load alt=
max takeoff weight main=
max takeoff weight alt=
more general=
engine (jet)= Klimov RD-500
type of jet= turbojet
number of jets=1
thrust main= 15.6 kN
thrust alt= 3,495 lbf
thrust original=
afterburning thrust main=
afterburning thrust alt=
max speed main= 1,026 km/h
max speed alt= 554 kt, 638 mph
cruise speed main=
cruise speed alt=
never exceed speed main=
never exceed speed alt=
stall speed main=
stall speed alt=
range main= 1,170 km
range alt= 632 nm, 730 mi
ceiling main= 13,000 m
ceiling alt= 42,650 ft
climb rate main= 1,612 m/min
climb rate alt= 5,289 ft/min
loading main= 238 kg/m²
loading alt= 48.7 lb/ft²
thrust/weight= 1:2.4 (4.1 N/kg)
power/mass main=
power/mass alt=
more performance=
armament=
* 3 × 23 mm Nudelman-Suranov NS-23 cannon
avionics=

ee also

aircontent
related=
La-168 -
La-172 -
La-176

similar aircraft=
MiG-15 - Pulqui II - Focke-Wulf Ta 183 - Yakovlev Yak-25 - F-84F Thunderstreak - F-86 Sabre

sequence=
La-7 -
La-9 -
La-11 -La-15 -
La-17
lists=
see also=
* List of fighter aircraft