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And Radio Communication in Tank T-72 A Report on Automatic Loading Gear (ALG) and Radio Communication in Tank T-72 By- Name of Students ID nos. Rudresh Gupta 2016A3PS0160G Jaskirat Singh Chhabra 2016A3PS0155G Vasu Gupta 2016A3PS0153G Dhruv Sharma 2016A8PS0371G Akanksha Singh 2016A8B30261G AT 505 ARMY BASE WORKSHOP, NEW DELHI Practice School – I station of BIRLA INSTITUTE OF TECHNOLOGY & SCIENCE, PILANI (MAY-JULY, 2018) BIRLA INSTITUTE OF TECHNOLOGY & SCIENCE PILANI (RAJASTHAN) Practice School Division Station: NEW DELHI Centre: 505 ARMY BASE WORKSHOP Duration: 8 WEEKS Date of Start: 22/05/2018 Date of submission: 13/07/18 Title of the project: 1) Auto-Loading Gear (ALG) in tank T-72 2) Radio Communication in tank T-72 Name of Students ID nos. Discipline Rudresh Gupta 2016A3PS0160G EEE Jaskirat Singh Chhabra 2016A3PS0155G EEE Vasu Gupta 2016A3PS0153G EEE Dhruv Sharma 2016A8PS0371G ENI Akanksha Singh 2016A8B30261G ENI Name and Designation of the expert: Sh. Kshitij Gupta, DGM (TEG) Name of the PS faculty: Dr. Nirankush Dutta Keywords: Tanks, ALG, KR-175, K1-M, Testing Jig, Amplifiers, Relays, Contactors. Project Areas: Electronics of the ALG system Abstract: The project is a detailed study and practical analysis of Auto-Loading Gear in tanks proposing improvements and possible changes, thereby reducing manual effort. Signature of student(s) Signature of Supervisor Date : Date : ACKNOWLEDGEMENT We wish to express our sincere gratitude to Birla Institute of Technology and Science, Pilani for providing us the opportunity to do our internship and project work in “505 ARMY BASE WORKSHOP, New Delhi.” We sincerely thank Sh. Kshitij Gupta, DGM (TEG) for his guidance and encouragement in carrying out this project work. We also wish to express our gratitude to Sh. Praveen Sharma who conferred his help during the period of our project work. We extend our gratitude to Mr. Rajbir and Mr. Ram Singh Sir for their continuous support. We would also like to thank all other officials and workers of 505 ARMY BASE WORKSHOP, New Delhi for their continuous support. We also thank the Practice School Division of Birla Institute of Technology, Pilani and our instructor Dr. Nirankush Dutta for providing us the opportunity to embark on this project. 3 TABLE OF CONTENTS Main Battle Tanks…………………………………………………………………………………………….….8 Tanks……………………………….……………………………….……………………………….…….8 The T-72 Main Battle Tank……………………………….………………………………………9 Automatic Loading Gear System…………………………………………………………………….……11 Developments in Automatic Loading……………………………….………………………11 Advantages of ALG……………………………….……………………………….………………..12 Advantages and Challenges of New Autoloader………………………………………13 Components of ALG.…………………………………………………………………………………….……..14 Rotary conveyor……………………………….……………………………….……………..……14 Cassette lifting mechanism……………………………….……………………………………15 Cartridge base disposal mechanism……………………………….………………………17 Ramming mechanism……………………………….……………………………….…………..18 Memory unit……………………………….……………………………….………………………..19 Motor-operated gun lock……………………………….…………………………..… ......... 20 Distribution box KR-175……………………………….……………………………….…….…20 Control Unit……………………………….……………………………….………………………...20 Rounds indicator meter……………………………….……………………………….…….…20 Reduction gear……………………………….……………………………….………………….…21 Loading control unit……………………………….……………………………….………….…21 Project Map .................................................................................................................................. 22 Detailed Explanation of Working of ALG System and Circuit Functions .................... 23 Rotation of Rotary Conveyor, Selection of Round, Stopping of Rotary Conveyor ......................................................................................................................... 23 Cassette Lifting Mechanism (CLM) .......................................................................... 23 Ramming ......................................................................................................................... 23 Returning of Cassette and Frame to Initial Position .......................................... 23 Safety Precautions ..................................................................................................................... 24 Instructions While Testing/Operating During Firing .......................................... 24 Preventive Maintenance ............................................................................................. 25 4 Problems and Faults ................................................................................................................ 25 Electrical Faults ............................................................................................................ 25 Mechanical Faults ....................................................................................................... 26 Improvements Suggested ....................................................................................................... 26 Reduction of Rejects, Increase in Output ............................................................ 27 Reduction of Waste .................................................................................................... 27 Reduction of Consumption ...................................................................................... 27 Improvement in Availability ...................................................................................... 27 Radio Transmission ................................................................................................................... 28 Definition ....................................................................................................................... 29 Different Steps in Radio Transmission .................................................................. 29 Detailed Explanation of Different Processes Involved .................................... 30 Communication in Tanks ......................................................................................................... 31 Types of ‘A’ Vehicles... .............................................................................................. 31 Different Types of Radio Systems Used In Tanks ............................................................ 32 Radio System: R-174 ................................................................................................................ 32 Features of R-174 ....................................................................................................... 32 System Configuration of R-174 ............................................................................. 32 Digital Control Harness ........................................................................................................... 33 Features ........................................................................................................................ 33 Vhf Radio Set Vrc-1465 M1-80/A-2-(5/50 W) .................................................................. 33 Different Parts of Vhf Radio Set .............................................................................. 33 Limitations of Radio Communication System ................................................................. 35 Recommendations .................................................................................................................. 35 5 LIST OF FIGURES 1. T-72 Tank…………………………………………………………………………………………………7 2. Automatic Loading Gear.…………………………………………………………………………9 3. Rotary Conveyor……………………………………………………………………………………..13 4. Cassette………………………………………………………………………………………………….14 5. Cassette Lifting Mechanism…………………………………………………………………….14 6. Cartridge Disposal System………………………………………………………………………15 7. Ramming System……………………………………………………………………………………16 8. Memory Unit………………………………………………………………………………………….17 9. Project Map ................................................................................................................... 20 10. Different Steps In Radio Mechanism ..................................................................... 27 11. Antenna ......................................................................................................................... 29 12. Types of Radio Systems Used in Tanks ................................................................ 30 6 P PROJECT-1 AUTOMATIC LOADING GEAR IN TANK T-72 7 1. MAIN BATTLE TANKS 1.1 TANKS 1.1.1 Definition Tanks are, in essence, mobile, protected, automotive, tracked, armored weapon platforms which carry heavy direct-fire weapons. In Modern combat tanks are expected to function in the following terrain: I. HAA’s (High Altitude Area) II. BUA’s (Urban Areas) III. Desserts 1.1.2 Combat tanks (MBT) There are 3 main aims of a tank in combat: 1. Destruction of enemy tank with equivalent weight and caliber 2. Enhanced Range of combat 3. High FRHP (First Round Hit probability) 4. Enhanced SSKP (single shot kill probability) 1.1.3 Design Concept There are 3 main factors kept in mind while designing a tank (according to combat requirements of the country): 8 1.2 THE T-72 MAIN BATTLE TANK Figure 1 1.2.1 History[1] T-72 is Soviet second generation main battle tank. Second generation tanks can be used at nights and have Nuclear-Chemical-Biological (NCB) protection system in it. Its production started in 1971. It comes after T-55 in the series. Different models of T-72 are T-72 (Ural), T-72A, T-72B, T-72M, T-72B3, T-72B3M. The differences in various models lies in the fact that different engines, ammunition, firing mechanisms, etc. are used but more or less they resemble to a great
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