Downloaded from https://www.everyspec.com LIST OF ILLUSTRATIONS Fig. No. 711C Page 1-1 Recoil 01un System ..... ... ... ..................... 1-3 1-2 I-lecoilless Gun System ........ .................... .. 1-4 1-3 Pressure-Travel and Velocity-Travel CAu'ves ..... ........... 1-5 1-4 Pressore-Travel Relationship .......... ................. 1-6 1-5 Effects of Grain Configuration on Pressure-Travel Curves ...... .. 1-7 1-6 Effects of Independently Varying Grain Size .............. . i..1-7 1-7 Typical Shapes of Propellant Grains ..... .............. ... 1-8 1-8 Siz;es of Some Typical Grains .......... .................
1-8 1-9 W'eb Thickness and Route of Burning Progress through a Progressively Burning Grain ..... ................ ... 1-9 1-10 Relative Areas of Burning As a Function of Percent of Individual Grain Consumed for Several Typical Grain Shapes . 1-9 2-1 Theoretical Pressure-Time Curve for 105mm Howitzer Using Taylor's Theory . ......... .................. .. 2-23 2-2 Result of the Analysis of a Firing Record for a 105mm Howitzer Round (Measured Values of Pressure and Displacement. Velocity and Acceleration Determined by Numerical Differentiation of Displacement.) ............ 2-30 2.3 Engraving Force for a Typical 105mm Howitzer Round ....... ..
2-431 2%4 Charge Burned versus Time for 37mm Gun ...... ........... 2-33 2-5 Linear Burning Rate versus Pressure for 105mm Howitzer, IM I Propellant. ....... ........................ 2-:34 3-1 Observed Radial Wear per Round at the Commencement of Rifling versus Calculated Heat Input per cm 2 per Round ....... 3-10 3-2 Change in Vertical Land Diameter at 0.1 Inch from Commencement of Rifling versus Number of Rounds in the 8-Inch Gun, M1 ..... . ..................... 3-12 3-3 Bore Enlargement at Origin versus Equivalent Service Rounds. 16-inch/45 Caliber Guns Marks 6 and 8 .... ........... .. 3-13 3-4 The General Shape of Vent Erosion versus Charge ........... ..
3-15 3-5 Early Design of Erosion Test Vent .................... 315 3-6 Final Design of 0.50-Inch Erosion Test Vent. (Vents With Different Diameters Are Obtained by Adding a Constant Increment to the Numbers Shown.) ............. 3-7 Weight Loss versus Round Number ..... .............. :-16 3-8 Diameter Increase versus Number of Rounds ................ 3-17 3-9 Weight Loss versus Number of Rounds ..... ............. 3-18 3-10 Weight Loss and Diameter Increase versus Number of Rounds 3-19 3-11 Dependence of Erosion on Initial Wall Temperature ......... ... 3-20 4-1 Quartz Piezoelectric Pressure Gage ..... ............... ... 4-3 4-2 Diagram of Recording System for Piezoelectric Pressure Gage.
4-4 4-3 Typical Pressure-Time Records from Quartz Piezoelectric Gage (155mm Gun) ......... ....................... ... 4-4 4-4 Dead Weight Apparatus for Calibration of Pressure Gages ... .... 4-5 4-5 The C-AN Strain Type Pressure Gage Using a Wire-Wrapped Ferrule ........... .......................... ... 4-6 vii