DEPARTMENT OF THE ARMY TECHNICAL MANUAL

1 CONFI DENTI AL-Modified Handling Authorized DEPARTMENT OF THE army TECHNICAL MANUAL NIKE I SYSTEMS NIKE I COMPUTER (U) HEADQUARTERS, 213th AAA GRObZ Pennsylvania Bational Guard 15th & Allen Streets Allentown, Pennsylvania DEPARTMENT OF THE army APRIL 1956 CONFI DENTIAL-Modified Handling Authorized 213- c&W# - // CONFIDENTIAL-Modified Handling Authorized rut4 COP) TECHNICAL MANUAL NIKE I SYSTEMS NIKE I COMPUTER (U) tm 9 -5000-3 DEPARTMENT OF THE army CHANGES NO. 1 WASHINGTON 25, D. C., 17 December 1956 tm 9 -5000-3, 10 April 1956, is changed as follows: Page Paragraph Line Changes 2 3b 8, 9, and 10 Delete last two sentences. 2 4a 3 Delete "at the time of burst". 4 4c last line Delete "at the time of burst". 7 7b 4 Change "is" to in. 16 15 4 Change "axes" to axis. 79 90- -- -- - -- - - - -- - Change all "microseconds" in the paragraph to milliseconds. 82 9 5 13 Add "loop1) after "control". 92 STANDBY 4 Change " " to 9 7 Computer la Change " " to reset [ (27 Nov 56)] By Order of WiZbeg* M.

2 Bwcker, Secretary of the army : MAXWELL D. TL4 YLOR, Generat, United States Ammy, Official : Chief of Staff. JOHN A. KLEIN, Major General, United States army , The Adjutant General. Distribution: Active army : Tec Svc, DA (1) except COFORD AAA & GM Sch (2500) Fld Comd, AFSWP (1) (7) Ord Sch (5) Units organized under following Ord Bd (2) Ord GM Sch (100) TOE'S: army AA Comd (2) AAA & GM Cen (7) 9-228R, Ord GM DS Co (CPL) Ord Ammo Comd (1) Ord Sec, Gen Depots (5) (Tentative) (1) OS Maj Comd (2) Ord Depots (5) 9-229R, Ord GM DS Co (NIKE) Log Comd (3) Ord PG (10) (Tentative) (3) MDW (1) Ord Arsenals (2) except Armies (3) Raritan Arsenal (13) Arty & GM Sch (5) Frankford Arsenal (7) NG: None. USAR: None. For explanation of abbreviations used, see SR 320-50-1. 411745-46 CONFIDENTIAL-Modified Handling Authorized CONFIDENTIAL-Modified Handling Authorized WARNING NOTICES Authority for release of this document to a foreign government must be secured from the Assistant Chief of Staff, Intelligence, DEPARTMENT of the army .

3 When this document is released to a foreign government, it is released subject to the following conditions: This information is furnished with the understanding that it will not be released to another nation without specific approval of the United States of America, DEPARTMENT of the army ; that it will not be used for other than military purposes; that individual or corporation rights originating in the information whether patented or not will be respected, and that the information will be afforded substantially the same degree of security as afforded by the United States of America, DEPARTMENT of the army . This document contains information affecting the national defense of the United States within the meaning of the Espionage Laws, Title 18 U. S. C., sections 793 and 794. The transmission or the revelation of its contents in any manner to an unauthorized person is prohibited by law. CONFIDEN'I'IAL-Modified Handling Authorized DEPARTMENT OF THE army WASHINGTON 25, D.

4 C., 10 April 1956 tm 9 -5000-3, Nike I Systems, Nike I Computers (U), is published for the use of all concerned. The special texts in the tm 9 -5000-series are training supplements to those in the tm 9 -5001-series which are the basic army directives for the operation and maintenance of the Nike I Guided Missile System. 111 the event of conflict, TECHNICAL manuals in the basic tm 9 -5001-series will govern. [AG (9 Mar 56)] By Order of Wilber h!. Brucker, Secretary of the army : Official : JOHN A. KLEIN. Major General, United ,Ctates army , The Adjutant General. ,II,YXn'ELIJ D. T-\YI,OR, General, United Rtates army , ('hief of Stuff. DISTRIBUTION: Active army : Tec Svc, DA (1) except COFORD Ord Sec, Gen Depots (5) (5) Ord Depots (5) Ord Bd (2) Ord PG (10) Hq CONARC (3) Ord Arsenals (2) army AA Comd (5) Fld Comd, AFSWP (1) Ord Ammo Comd (1) Units organized under following OS Maj Comd (2) TOE'S: Log Comd (3) MDW (1) %228R, Ord GM DS Co (CPL) Armies (3) (Tentative) (1) 1st QM Brig (35) %229R, Ord GM DS Co (NIKE) Ord Sch (5) (Tentative) (1) Arty & QM Sch (5) %377R, Ord Sp Wpn Depot Co AA & QM Cen (15) (1) NG: None USAR: None.)

5 For c?xplanation of abbreviations used, see SR 320-5C1. 19-177R, hlP Scty Co, Ord Sp Wpn Depot Bn (1). 44-101R, Hq & Hq Btry, AAA Brig, Mbl (1) 44-112C, HHBy, AAA Gp, Con- tinental (1) 44-145R, AAA Msl Bn, NIKE, Smbl (17) 44-146B, Hq & Hq Btry, AAA >As1 Bn, NIKE, Smbl (17) 44-201R, Hq & Hq Btry, AAA Brig, Continental (1) 44-445R, AAA Ms1 Bn, NIKE, Continental (17) i CONFIDENTIAL-Modified Handling Authorized CONFIDENTIAL - MODIFIED HANDLING AUTHORIZED tm 9 -5000-3 10 April 1956 CONTENTS Paragraph CHAPTER 1. THE SURFACE-TO-AIR MISSILE PROBLEM Section I. Introduction .. 1-3 11. The surface-to-air missile problem .. 4-10 111. The Nike I computer reference planes and axes.. 11-20 CHAPTER 2. THE NIKE I COMPUTER Section I. General .. 21 -25 11. The prelaunch section.. 26-47 111. The initial turn section .. 48 -62 IV. The steering section .. 63-99 CHAPTER 3. COMPUTER OPERATION Section I. Over-all operation of the computer.

6 100-106 11. Sequence of events of computer.. 107-110 CHAPTER 4. BUILT-IN TEST EQUIPMENT.. 11 1 - 114 CHAPTER 5. GYRO AZIMUTH TRANSMISSION SYSTEM.. 115-120 APPENDIX I SYMBOLS AND ABBREVIATIONS .. INDEX .. Page CONFIDENTIAL - MODIFIED HANDLING AUTHORIZED TM ?-~m-3 a 10 April 1956 CHAPTER 1 THE SURFACE-TO-AIR MISSILE PROBLEM Section I. INTRODUCTION 1. PURPOSE AND SCOPE a. Purpose. This text is a guide for the officers who are assigned to a Nike I missile battalion and its component units, or to higher headquarters which have Nike I units assigned to them. b. Scope. Covered in this text is the operation of the Nike I computer, on a detailed block diagram level. 2. REFERENCES AND DEFINITIONS a. References. References to tm 9 -5000-8 may be abbreviated~ for example, See figure 11-85. References to other special texts will show the complete text number and, where appropriate, the paragraph number; for example, rn 9-5000-2 , par 3.

7 B. Definitions. See appendix I for a glossary of symbols and abbreviations. 3. GENERAL a. History. At the close of World War I1 it became apparent that develop- ment of faster and more maneuverable hostile bomber aircraft and infinitely more destructive bombs, such as the atomic bomb, made it necessary to increase the capabilities of antiaircraft artillery weapons to attack and destroy such aircraft. Two d,isadvantages of heavy artillery (90- and 120-mm guns) became apparent: limited range and insufficient accuracy. The operating ceil- ing of present-day aircraft has increased to such an extent that airplanes may fly above the maximum effective range of heavy artillery. With the probability that hostile aircraft will carry atomic armament, it becomes even more urgent that the accuracy of heavy AAA be increased to insure the destruction of hostile aircraft before the bombs are released. A 90- or 120-mm projectile has a long and uncontrolled time of flight.

8 Although the fire control equipment is capable of accurately predicting the point of impact, the ability of hostile air- craft to maneuver while the projectile is in its uncontrolled flight may result in such a great miss distance that the battery will be unable to accomplish its mission. Weapons have been developed which are capable of attacking and 1 a CONFIDENTIAL - MODIFIED HANDLING AUTHORIZED P CONFIDENTIAL - MODIFIED HANDLING AUTHORIZED TH 9-5000-3 10 April 1956 destroying modem enemy aircraft. One of these weapons is the surface-to-air guided missile (SAM). The surface-to-air missile has an effectiveness consid- erably greater than heavy artillery. It has a greater range because of its motor, and is more accurate because it is guided during flight. Surface-to-air missiles are guided throughout most of their flight paths from ground to target, and are capable of outmaneuvering any presently known hostile aircraft operating at medium or high altitudes.

9 The Nike I missile is a missile of this type. During flight the Nike is guided from the ground by a fire control system. b. Targets. The fire unit of the guided missile system, XSAM-A-7, is the battery. The primary purpose of the battery is the destruction of long range, bomber type aircraft. A typical target may be assumed to be a bomber having an effective radar area of 26 square meters, which is comparable in size to the present B47. This target is expected to have a ground speed of 650 knots, a ceil- ing of 60,000 feet, and a maximum maneuverability of 3g at 40,000 feet. These performance characteristics are in excess of those of presently known types of bomber aircraft. The mathematical computations necessary for accurate guid- ance of the missile are performed by the computer. Therefore, the reader must under stand the problem which the computer solves . Section 11. THE SURFACE -TO-AIR MISSILE PROBLEM 4.

10 GENERAL a. Definition. The surface-to-air missile problem is to guide a missile launched from the ground so that it will arrive and burst in the sky close enough to a target at the time of burst. to destroy the target. The steps in the solution of this problem depend upon the weapon to be used and upon the type of guidance system chosen to guide the missile. b. The command guidance problem. In the Nike I system the direction of flight of the missile is controlled by the computer. The computer-controlled flight starts about 7 seconds after the missile is fired and ends with the burst of the missile after a burst order has been issued by the computer. The two tracking radars keep the computer continuously informed about the present positions of target and missile, and the computer issues to the missile direc- tional commands designed to make the missile intercept the target in the short- est possible time.