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| Japanese Explosive Ordnance – Army Ammunition – Navy Ammunition |
| Chapter 4 – Section 3 |
| ARMY MORTARS |
| 81-mm Parachute H.E. Smoke Mortar |
| Weight complete round: No data. |
| Weight main charge: No data. |
| Explosive components: Main charge: Tetryl. |
| Over-all length: 21.87 inches. |
| Length of shell (less propellant container and nose plug): 19.1 inches. |
| Diameter of shell body: 1.5 inches. |
| Diameter of fins: 3.19 inches (81 mm). |
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Color: Unpainted galvanized iron with a yellow wooden nose and a green band around the body. |
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Description: This shell is similar to the H.E. round except that there is a smoke pellet in the bottom of the suspended cylinder. Above the smoke pellet are two pellets of tetryl with a black powder delay train running through the middle. As with the H.E. round, the line to the upper parachute is attached to a pull igniter and, if pulled before the self-des-troying feature operates, will detonate the charge. |
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Operation: The operation is similar to the H.E. round except that the expelling charge ignited the smoke-flare pellet, which burns about 53 seconds and which then ignites the short delay train which burns seven seconds before the self destroying element func-tions. |
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Figure 306 – 81-mm Parachute High-Explosive Smoke Mortar. |
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