July-August - Air Defense Artillery School

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38. THE COAST ARTILLERY JOUR:\AL vidual talents of the gunner. In any case, the gunner is not handicapped by the presence of the sights. The principal advantage of sights is generally believed to be obtained at the time of opening fire. The sights can be brought up to line and then swung ahead to establish an opening lead; the first tracers should then be line shots or nearly so, and very near the target from the standpoint of lead. A.djustments then made as a result of tracer observation should be fairly small. If a simple ring sight is used it will be necessary to establish the opening lead and applY.it in target le,zgtlzs; this type of lead varies directly with both range and target speed-the estimated number of lengths must be applied by further estimation against the open sky, there being no known form of successful sight for laying off apparent target lengths. (Due to the amount of estimation involved, plus the fact that no two types of planes have exactly the same length, it is doubtful whether or not such a device would be justified.) If the forward area (multiple ring) type of sight is used the opening lead will be taken in angular value, in terms of mils. This type of lead also varies directly with the target speed; however the variation due to different ranges is almost negligible unless firing is done at extremely long ranges. The forward area sight also constitutes a templet for projecting the target's line of Hight and a measuring device for actually applying the desired lead. Since the necessary angular lead for any given angle of approach depends practically on target speed alone, the concentric rings of the front sight are designated in terms of target speed in miles per hour, usually 100, 200, and 300, for the three concentric rings. These values are correct for targets at the midpoint of the course and a reduction in lead is necessary for both approaching and receding targets. Forward area sights are discussed in detail elsewhere. Although machine gun sights are most valuable at the time of opening fire, there are undoubtedly special conditions where the sight may produce hits quickly without the aid of tracer adjustment. Such may be the case when a target dives directly at the gun. Such may also be the case when a low-Hying maneuvering plane approaches the point in a banked turn where the gunner is looking tangent to the turn, the target appearing momentarily stationary. On crossing courses the usual method is to look over or around 1 - $. I, ~ S"S'O --/ /45 r: /7"- :;J. 5''::;_'C ";-£-y! ~.: -h;'-
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Page 5 and 6: OAST ARTILLERY JOURNAL FOUNDED IN 1
Page 7 and 8: ~ \\ Itll a conlldence and morale w
Page 9 and 10: iPders to withstand shipment by tra
Page 11 and 12: laJs" will do much to while away th
Page 13 and 14: The 76.2 super-high velocity Russia
Page 15 and 16: (;ER~lA~ AI. (;1I~ 1Acnes PzKw III,
Page 17 and 18: J\S positive. Eight times out of te
Page 19 and 20: often his week end will be spoiled.
Page 21 and 22: nlal allirude. it is a lechnique to
Page 23 and 24: { ,. j I /9-13 THE .50 I\IACHI0JE G
Page 25 and 26: THE .50 ~II\CHI:\'E GlI:\' AS 1\ Sl
Page 27 and 28: llllerican and British AA guns 11dg
Page 29 and 30: 1t' lUll UU.'\ 1 1-.1'\U\\- iUlI Gt
Page 31 and 32: , ) STEREOSCOPIC VIE\VER 29 I I I I
Page 33 and 34: in the battery carpenter and an ele
Page 35 and 36: Ct\RTC TRAI~I:'\G AIDS An idea is c
Page 37 and 38: RIE Captured Italian guns, parked n
Page 39: J \ \ Y \ I \ \ ~ ¥'\ ~ I I ,... I
Page 43 and 44: he target's line ot projected Hight
Page 45 and 46: asS SECTION THROUGH ONE OF VON UNGE
Page 47 and 48: connection with other elements of c
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Page 51 and 52: 'Protective Cover • The cover exp
Page 53 and 54: "(!fCe forward down the length of t
Page 55 and 56: -19-13 I?\lPRO\'ISED DEPRESSION POS
Page 57 and 58: A l-.lEclHOD OF E~lERGENCY FINDING
Page 59 and 60: 1';J-fj COAST ARTILLERY BOARD A'OTE
Page 61 and 62: "I'sending the unmodi6ed spindle to
Page 63 and 64: Group Subscription Orders 1he 198th
Page 65 and 66: 1943 :\'EWS AND CO~l~lE0JT 63 "zero
Page 67 and 68: British AA Battery Arrives \ specia
Page 69 and 70: COAST ARTILLERY ACTI\'ITIES (V peac
Page 71 and 72: CUAsT ARIILLERY ACTl\'ITIES riot ra
Page 73 and 74: ------------7C'70"\:AuS""1.I-f:\'\R
Page 75 and 76: It doesn't matter how muc ou have,
Page 77 and 78: Camp Wallace COLONEL HAHOLD H. IACK
Page 79 and 80: The mockup freight cars are the des
Page 81 and 82: COAST ARTILLERY AGfl\'ITIES n~ amI
Page 83 and 84: '" .... I he entertainment calendar
Page 85 and 86: ------------------ -- Prophet With
Page 87 and 88: J43 BOOK REVIEWS Fof the unvarnishe
Page 89 and 90: aCfereporter, and as a result she i
Page 91 and 92:
acies must not allow the just anger
Page 93 and 94:
No Phoney W'ae LDCATS OVER CASABLAN
Page 95 and 96:
\X'ar Fiction £ FIGHTING AMERICAN.
Page 97 and 98:
------- BOOK REVIE\VS 95 U \'ou wan
Page 99 and 100:
Again Available! oast ~rtillery RIN
Page 102 and 103:
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July-August - Air Defense Artillery School

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