https://www.traditionrolex.com/43
Lance Grenade Type 89 Knee Mortar (??????? hachij?ky? shiki j?tekidant?) Australie
English Translation
Merci à TMA_O pour ces photos
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Lance Grenade Type 89 Knee Mortar (??????? hachij?ky? shiki j?tekidant?)
Le Lance Grenade Type 89 Knee Mortar était un mortier de 50mm C'etait l'arme de soutien de base pour une compagnie . Les Américains ont cru au debut que cette arme était un mortier pouvant etre tirer en appuyant la plaque sur le genou Erreur fataloe mais on surnom est resté
C''es un mortier tres proché du M79 américain lanceur de 40mm qui sera utilisé au Vietnam, du moins en ce qui concerne sa légèreté et sa maniabilité en général. Mais contrairement au M 79 le Type 89 ne peut tirer non pas épaulé mais que plaque au sol comme le mortier classique.
Il est tres leger moins de 5 kgs et être rapidement mis en, oeuvre par un seul homme, avec une cadence de tir de 25 coups par minute, un second soldat sert de pourvoyeur . Normalement, l'equipe de piece est de trois hommes
Le Type 89 tiré un projectile pesant un peu moins de 1 kg, qui est une grenade à fragmentation standard avec ailettes rajoutées
. Sa portée maximale est d'environ 700 mètres, Un système d'armement existe qui arme le projectile lors de la sortie du tube
Il existe une echelle de graduations gravée sur le tube permettant ainsi au tireur de régler cela avec une certaine exactitude, son tir mais la précision du tir tient beaucoup à la pratique et l'habileté de son equipe de pièce
il pouvait aussi tirer des fumigènes et des fusées de signalisation
Type 89 Grenade Discharger. Knee Mortar (??????? hachij?ky? shiki j?tekidant?)
The most basic support weapon available in the average rifle platoon was the 50mm grenade launcher, erroneously known to the Americans as the "knee mortar." In reality it was hardly a mortar at all, more akin to the American M79 grenade-launcher (40mm) of Vietnam era fame, at least in terms of its lightness and general handiness. Unlike the later US weapon, however, the Japanese Type 89 grenade launcher was not shoulder-fired, but rather was meant to be braced against the ground when shooting, in this respect resembling the conventional mortar family. But the 50mm Type 89 was very light, weighing only ten and a quarter pounds ready for action. It could easily be carried, and if necessary fired, by one man, although for the maximum rate of fire of about 25 shots per minute a second crewman was needed to drop the bombs into the discharger cup, and normally the Japanese assigned three men to each "knee mortar." The Type 89 fired a projectile weighing just under two pounds, which was essentially little more than a standard fragmentation grenade with fins added. Its maximum range was about 700 yards, with an interesting system of range adjustment that involved screwing the trigger housing on which the discharger cup was mounted so that more or less of the spigot-like triggering device projected into the cup (the longer the projectile remained inside the cup, the longer it was subjected to the full burst of the propellant charge, hence the greater push it got before reaching the muzzle-- thus the length of the cup, altered by screwing the trigger mount in or out, directly affected range. There were graduations marked on the trigger housing so the gunner could adjust this with some exactitude, but since the weapon was still hand-held to a degree, firing it accurately was still an inexact science calling for practice and skill on the part of man wielding it).
The Type 89 could also fire various colored flares for illumination or, more commonly, signalling purposes.
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https://www.traditionrolex.com/43