DEPARTMENT OF MISSilE TRAINING INERTIAL GUIDANCE COMMAND SIGNAL GENERATION. May 1961 Revised November 1961

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$,) j.; STUDENT WORKBOOK ) \ AR TRANNG COMMAND DEPARTMENT OF MSSilE TRANNG NERTAL GUDANCE COMMAND SGNAL GENERATON May 1961 Revised November 1961$

1 ,) j.; STUDENT WORKBOOK ) \ AR TRANNG COMMAND DEPARTMENT OF MSSilE TRANNG NERTAL GUDANCE COMMAND SGNAL GENERATON May 1961 Revised November 1961 COURSE OBR1821B/ Pl TECHNCAL TRANNG <l FOR NSTRUCTONAL PURPOSES ONLY \) David Jenkins 556th SMS -Scaned by Jeff Stephens- atlasbases.homestead.com

2 David Jenkins 556th SMS -Scaned by Jeff Stephens- atlasbases.homestead.com ABOUT STUDENT STUDY GUDES AND WORKBOOKS STUDENT STUDY GUDES AND WORKBOOKS, are designed by the Air Training Command as student training publications for use in the training courses of this command. Each publication is prepared for a subject or Unit of nstruction as reflected in the course syllabus. THE STUDENT STUDY GUDE, contains the specific information required in the Unit of nstruction or it will refer to other publications which the student is required to' read. t contains the necessary information which is not adaptable for student study in other available sources. The material included or,referred to is normally studied either outside the classroom or during supervised study periods in the classroom. Also included are thought provoking questions which permit self-evaluation by the student and which will stimulate classroom discussion. THE STUDENT WORKBOOK, contains specialized job procedures, important information about the job, questions to be answered, problems to be solved and/or work to be accomplished by the student during the classroom! laboratory, airplane/equipment activity. t serves as a job sheet, operations sheet, mission card, checklist, or exercise to be performed during classroom or' laboratory periods. Also included are questions which will aid the student in summarizing the main points of the subject or Unit of nstruction. STUDENT STUDY GUDES AND WORKBOOKS, are prepared primarily for use in the training situations peculiar to the Air Training Command. However, they must not conflict with the information and/ or procedures contained in Technical Orders or other official directives.

" Missile Operations/ Maintenance Officer Missile Fundamentals Branch Department of Missile Training Sheppard Air Force Base, Texas OBR1821B/3121-3--8-P1 Student Workbook November 1961 DAY 46 NERTAL

3 " Missile Operations/ Maintenance Officer Missile Fundamentals Branch Department of Missile Training Sheppard Air Force Base, Texas OBR1821B/ P1 Student Workbook November 1961 DAY 46 NERTAL GUDANCE - COMMAND SGNAL GENERATON OBJECTVE: To develop an understanding of command signal generation in an inertial guidance system. PROCEDURE: 1. Answer questions a through f. a. Explain the effect of gravity on the output of an accelerometer. b. What is the purpose of the built in float unbalance along the spin axis of the accelerometer?,qcc c. Explain why constant motion has no effect on the output of the accelerometer. d. Why must a gyro nulling apparatus be incorporated into the accelerometer system? - 1 -

4 e. What is the purpose of the accelerometc _dye motor in this system? TD c.«m.. PEW S"ATE...,.,D'/t/i-" FtJ5 /17 f. What are three main differences between the stabilization gyro and the accelerometer gyro? 2. The instructor will supply the necessary extra information to complete Figures 1 through 7. Label the components and construct the data flow of each of the figures shown

5 ",. '. f / Velocity 1 A C C E L E R C M E T E R S X Y Z & e e o r Pot /) M Yaw E M.Pitch R Cutoff Y _Arming Acceleration Command Signal Generation Data Flow Figure 1-3 -

6 .r TM EJ EJ ACEL -- SM FL,-- -- ' """'"----- Q Coarse Pot Camp Q Fine Pot - Pot Command Signal Generation Data Flow Figure 2-4 -

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11 CD David Jenkins 556th SMS -Scaned by Jeff Stephens- atlasbases.homestead.com

$\ COMMAND SGNAL GENERATON OBJECTVE: To develop an understanding of guidance system components. PROCEDURE: Answer the following questions. 1.$

12 \ COMMAND SGNAL GENERATON OBJECTVE: To develop an understanding of guidance system components. PROCEDURE: Answer the following questions. 1. An inertial guidance system senses a tpssiles movement as an /lcc. L15R t -r1'/rauantity. This quantity is inteat. ed to determine L L C ry which is also integrated to determine r) r Prfll C.E. 2. What law of Rysics is the 9Peqtion of an acce,rojlleter based ppon? vewfl}tv' t.. AVVS ) r- {V O ON' 3. Why is an MCOlkrimee.uc.uV A le axis of freedone device? 4. What effect will high velocities have on the operation of an accelerometer? No.,- }fn 5. What effect does gravity have on the operation of an accelerometer? VAR.E5 6. Define velocity-to-be-gained. \ F f5e-r-w -c-eaj Ml SS Lf 11...} C C Rr3 L JA.re P V - 9 -

David Jenkins 556th SMS -Scaned by Jeff Stephens- atlasbases.homestead.com 7. How does the, magnitude..of corr elated velocity vary during the guided portion oj flight? 1)fC-fl<; <) ) 8.

13 David Jenkins 556th SMS -Scaned by Jeff Stephens- atlasbases.homestead.com 7. How does the, magnitude..of corr elated velocity vary during the guided portion oj flight? 1)fC-fl<; <) ) 8. What two quantities are compared in order to determine steering signals? ACCf:U:RfrrlOJ +- ElrOq'tV 9. Why is an intentional gyro wheel unbalance used in an accelerometer gyro? Nt {.\K 11"Sf tvs, r V, R CCE=f ct 71 " y io.. Why must an accelerometer g:ro be rotated out its nout axis? fvf 11N'A N R11)ie N it-\' NVL What is the purpose of the signal microsyn as ed on J:..heaccelerometer gyro? SEN e"'fprlorj AoV'1' OVTt'V'f rt\s 12. Explain why it is necessary to maintain the accelerometer gyro at Alajnullposition during operation. hbr Sf3NSi,t lie /+Vf) f/-cctj c.j:tte f'st17'11.' What is the major purpose of the following loops?.j a. Accelerometer drive. b. Computer repeater. c. Steering. " - 1 -

d. Accelerometer torquing. 14. Why is the main engine cutoff prior to the vernier engines? J --rlttusr p 3CA-''. 2.. Fllllr /)f?jf/rf'1 15. What is thrust decay? f f1te cvroff: 16.

14 d. Accelerometer torquing. 14. Why is the main engine cutoff prior to the vernier engines? J --rlttusr p 3CA-''. 2.. Fllllr /)f?jf/rf'1 15. What is thrust decay? f f1te cvroff: 16. What are the values of the following quantities at the instant of separation? a. Velocity to be gained? = [) b. Correlated velocity :: V c. Missile velocity = Jc. 17. What is the purpose of pre-arming a re-entry vehicle? Sft -ry 18. Why is the guidance system used as the source of the pre-arm signal? ON- sy)rj:a? m87- &lt)w. ' wrj-'rs Gol,vrS ON, FPS

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