The Definitive Guide to 호치민 체온 38.5
The Definitive Guide to 호치민 체온 38.5
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therefore, they shaped a sub-course within the Mahan course, as all other users of that course had been Geared up with Mark 21 pedestal mounts in all five positions.
Bow of USS Mahan (DD-364) in June 1944. A further see on the Mark 21 open-again protect pedestal mounts. Be aware the groove inside the deck of Mount #2. This was to permit a route for ejected cartridge cases once the gun was at higher elevations. The later on base ring mounts experienced the gun mounted some inches greater and so didn't need to have this groove. Observe the Mark 33 director and its newly additional radar along with the non-slip tread product styles on the decks.
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Also Take note the large "sprayshield" about Mount 52. This defend was actually meant to shield the gun crew over the decrease deck through the blast with the higher gun. afterwards destroyers with enclosed gunmounts did not need to have this more defense and so do not have these shields. depth from U.S. Naval historic Centre Photograph # 19-N-67752.
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^The Mark 21 pedestal mount was with the limit of turning masses which could be quickly manhandled. for getting to this fat, BuOrd sacrificed shields and ammunition hoists and accepted the resulting reduced charge of hearth. Ammunition for these pedestal mounts was fed from deck mounted scuttles, from which rounds could be passed to the Mechanical Fuze Setter Found about the rotating mount. As finished, destroyers with Mark 21 bow mounts had straightforward open-back again shields though the stern mounts had been still left open and unshielded. The bow shields for these mounts ended up notable for having a bulge within the left aspect so as to support the Mechanical Fuze Setter.
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^The Mark 38 twin mount utilized on destroyers was identical in layout to one other twin DP mounts but differed by possessing a much lighter construction as well as a thinner defend.
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^Ramming was electricity-worked on all mountings and was both pneumatic or by a five hp electric motor with hydraulic generate. This permitted any-angle loading and thus a sustained large price of fireplace even at higher elevations. In an crisis, guns may very well be manually rammed but this could not be completed in the event the gun was at higher elevations since the projectiles would slide again out.
^The mounting kinds, designations and portions proven in this table are primarily for warships "as commissioned" and are largely the result of my analysis to get a record and Technology essay on US gun mounting manufacturing for the duration of planet War II.
The rammer is routinely retracted by the recoil of the gun, and, at the conclusion of the retract stroke, the shell guard (or spade) is dropped via the spademan. The spademan drops the spade as soon as the ejected vacant cartridge circumstance rides away from the tray. When the gun elevates past 40 degrees the spademan deploys the cartridge circumstance halt and manually gets rid of the expended casing with the gun. the new circumstance gentleman then moves the casing off the mount.
The work on the Sight Setter was to ensure that the two dials in Every single indicator had been consistent with one another before the gun was fired in computerized method (and that is where the command "match ideas and shoot" comes from). He did this by turning his two hand cranks. Turning these hand cranks moved the prisms inside the gunsights utilized by the coach and pointer such that, in the event the gun was skilled and elevated to match the sight setter, their crosshairs will be around the goal. In regional Manage, the sight setter was directed via the mount captain as to the correct settings to be used. Other attention-grabbing attributes Within this photograph tend to be the well known open sights over the gun and the electrical rammer/counterweight in the breech stop in the weapon. the next picture is with the Sight Setter Indicator as applied on twin mounts. Its operation and use was comparable to the former instrument, but differed by having each a high velocity dial plus a low speed dial for the deflection and sight angles. Each individual of such dials had its own synchro motor. For more info on how Sight environment worked, remember to see this superb video by Tom Scott of Battleship Texas describing the five"/51 (twelve.7 cm) gun style And exactly how it operated.
from the photograph of USS Shaw (DD-373) at correct, the officer is pointing into the 3 round dials that variety the Sight placing Dial Cluster. The enlisted guy with The check here pinnacle telephones standing beside him may be the "Sight Setter" who operated the Sight Setting dials. These dials had been "Stick to the pointer" indicators which confirmed the deflection angle (bearing) from the LH glass experience dial plus the sight angle (superelevation) from the RH glass experience dial whilst the vary was revealed by the bottom metallic facial area dial. Inside Each and every of The 2 glass-deal with dials were being two more compact dials - an interior disc dial mounted with a synchro motor shaft and an outer ring dial inscribed that has a scale. The inner disc dial synchro motors had been operated from the hearth Handle Pc and showed the desired sight angle and deflection angle as calculated by the pc. The outer ring dials, controlled from the Sight Setter by way of two hand cranks, showed The existing sight angle and deflection angle of the gunsights. The underside dial was the range indicator While using the black slot on the correct getting the readout spot, displaying the variety in yards. The array dial and the sight angle dial ended up geared jointly to work through the exact hand crank.
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