ATP-5-0-2-1 Staff Reference Guide Volume 1 Download

Fires Planning Factors 07 December 2020 ATP 5-0.2-1 243 Table F-3. Artillery smoke planning data ATP 3-09.42 Delivery system Round type Time to build effective smoke (minutes) Average burning time (minutes) Average obscuration length (meters per round) Wind direction Cross Head or Tail 155 mm WP 0.5 1 – 1.5 150 50 HC 1 – 1.5 4 350 75 WP(M825) 0.5 5 – 10 350 100 - 200 105 mm WP 0.5 1 – 1.5 75 50 HC 1 – 1.5 3 250 50 120 mm WP 0.5 2.5 100 60 81 mm WP 0.5 1 100 40 RP 0.5 2.5 100 40 60 mm WP 0.5 1 75 40 Note. All rounds are fired as standard missions with parallel sheafs under favorable conditions HC: hexachloroethane smoke RP: Red Phosphorous WP: White phosphorous Quick smoke data—155-mm shell smoke Hexachloroethane (HC) Weather conditions Wind speed (knots) Rate of fire Duration requested by forward observer (minutes) 4 5 6 7 8 9 10 11 12 13 14 15 Rounds per tube IDEAL 5 1 rd per 2 min 2 2 3 3 4 4 5 5 6 6 7 7 FAVORABLE 5 1 rd per 2 min 2 2 3 3 4 4 5 5 6 6 7 7 10 1 rd per 1 min 2 3 4 5 6 7 8 9 10 11 12 13 15 1 rd per 40 sec 3 4 6 7 9 10 12 13 15 16 18 19 MARGINAL 5 1 rd per 40 sec 3 4 6 7 9 10 12 13 15 16 18 19 White phosphorous (WP) Weather conditions Wind speed (knots) Rate of fire Duration requested by forward observer (minutes) 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Rounds per tube IDEAL 5 1 rd per 2 min 2 3 3 4 4 5 5 6 6 7 7 8 8 9 FAVORABLE 5 1 rd per 2 min 3 4 5 6 7 8 9 10 11 12 13 14 15 16 10 1 rd per 1 min 4 6 8 10 12 14 16 18 20 22 24 26 28 30 15 1 rd per 40 sec 6 9 12 15 18 21 24 27 30 33 36 39 42 45 MARGINAL 5 Exceeds rate of fire