Description
The most significant change over the Strela 2 was the introduction of an all-new infra-red homing seeker head. The new seeker worked on FM modulation (con-scan) principle, which is less vulnerable to jamming and decoy flares than the earlier AM (spin-scan) seekers, which were easily fooled by flares and even the most primitive infrared jammers. Most importantly, the new seeker also introduced detector element cooling in the form of a pressurized nitrogen bottle attached to the launcher.
The effect of cooling was to expand the seeker's lead sulphide detector element's sensitivity range to longer wavelengths (slightly over 4 µm as opposed to 2.8 µm of uncooled PbS elements). In practice this made possible the tracking of cooler targets over longer ranges, and enabled forward-hemisphere engagement of jets under favourable circumstances.The seeker also had better tracking rate, enabling the missile to track maneuvering of fast and approaching targets.
A negative side effect from the aforementioned improvements was increased missile weight, which caused a slight decrease in the kinematic performance of the original Strela-2 (SA-7). Against relatively slow, low-altitude battlefield air threats the overall effectiveness was much improved.
Strela-3 missiles have been exported to over 30 countries.
The original Strela-3 missile was the 9M36. The follow-on to the Strela-3 was Igla.
The naval version of this missile has the NATO reporting name of SA-N-8.
Read more about this topic: 9K34 Strela-3
Famous quotes containing the word description:
“The type of fig leaf which each culture employs to cover its social taboos offers a twofold description of its morality. It reveals that certain unacknowledged behavior exists and it suggests the form that such behavior takes.”
—Freda Adler (b. 1934)
“The great object in life is Sensation—to feel that we exist, even though in pain; it is this “craving void” which drives us to gaming, to battle, to travel, to intemperate but keenly felt pursuits of every description whose principal attraction is the agitation inseparable from their accomplishment.”
—George Gordon Noel Byron (1788–1824)
“An intentional object is given by a word or a phrase which gives a description under which.”
—Gertrude Elizabeth Margaret Anscombe (b. 1919)