The fight against the “fiery serpents” and fires at the Gaza border. Expert commentary
The fight against the “fiery serpents” and fires at the Gaza border. Expert commentary
20 June 2018
Published by https://koztimes.com/
ISRAEL/PALESTINE – 41-year-old specialist in forest fire Michael Levin, who immigrated in 2016 from Russia and living in RA’anana, commented on the proposals to combat “fire snakes” and balls of the arsonists of Gaza, sent to the editors NEWSru.co.il, and made a proposal to change works when fighting fires in border areas.
Levin since 2002, participated in extinguishing forest fires in Central Russia as a volunteer, in 2008 organized a “voluntary forest firefighters Society”, which he headed until his repatriation to Israel. Under his leadership, the volunteers monitored the fires throughout the territory of the Ladoga skerries from Priozersk to Moscow (this is a strip of Islands along the Northern shore of lake Ladoga up to a width of 20 km and length of about 120 km). He is the author of methods of accurate calculation of hose pumping lines, co-author of “Handbook of voluntary forest fire”, supervised the extinguishing of hundreds of forest fires. In addition, Levin is a developer of communications systems and unmanned vehicles to detect forest fires.
The fight against the “fiery serpents” and fires at the Gaza border. Expert commentary
magictr | June 20, 2018 | Region news | No Comments
Борьба с “огненными змеями” и пожарами на границе Газы. Комментарий эксперта
41-year-old specialist in forest fire Michael Levin, who immigrated in 2016 from Russia and living in RA’anana, commented on the proposals to combat “fire snakes” and balls of the arsonists of Gaza, sent to the editors NEWSru.co.il, and made a proposal to change works when fighting fires in border areas.
Levin since 2002, participated in extinguishing forest fires in Central Russia as a volunteer, in 2008 organized a “voluntary forest firefighters Society”, which he headed until his repatriation to Israel. Under his leadership, the volunteers monitored the fires throughout the territory of the Ladoga skerries from Priozersk to Moscow (this is a strip of Islands along the Northern shore of lake Ladoga up to a width of 20 km and length of about 120 km). He is the author of methods of accurate calculation of hose pumping lines, co-author of “Handbook of voluntary forest fire”, supervised the extinguishing of hundreds of forest fires. In addition, Levin is a developer of communications systems and unmanned vehicles to detect forest fires.
From our readers suggested ways to kill kites and balloons Michael Levin, the most promising seem to be flying wings with a cutting edge, with FPV systems and engines EDF. Recall that to apply to detection and destruction of “kites” is not a multicopter, and inexpensive unmanned flying wings offers electronics engineer Alex R., who himself has collected some such designs. At the same time, the head of the company VIS Ershel Greenberg, a former master of sport of model airplanes and a member of the group aerobatic model aircraft, recommends to deal with the “snakes” use a radio-controlled model aircraft on the principle of competition for “air combat” (according to him, it is guaranteed almost 100 percent efficiency). In turn, Alex Shor advises for greater efficiency to sharpen the wings of such aircraft.
Perhaps these flying wings should be equipped with infrared sensors or systems of recognition of images (similar to those used in the Mobileye), what we wrote is a specialist in applied mathematics from Hadera Dmitry Rivlin and a computer specialist from Kiev Yuri Zaleski.
Michael Levin notes that the cost of Amateur flying wing with autopilot and video transmission system of about 1000 shekels, the vitality is high, the probability of destruction discovered “snake” or ball at a height of up to 2 km close to 100%.
According to Michael Levine, offers various options for establishing the grids on the perimeter of the border of the Gaza strip, weredoing systems or fire “kites” and balloons from the ground is less promising, since Pyros can increase the height of the flight of their designs to hundreds of metres or even several kilometres, increasing the Leer kite fishing line or using balloons filled with helium. The increase in height and thus flight time will require arsonists use more long-lasting burning containers with flammable mixture (flying design, carrying explosives, this requirement does not apply), but it is unlikely that this task will prove to be unsolvable.
Particular attention to Michael Levin recommends that you paid to the establishment of rapid response teams on the fires on the ground. “In fire fighting there are two fundamentals – fast detection and fast arrival of the first group. In a minute after the fall “the serpent” fire can stomp in two minutes you can fill a couple of buckets of water. After 10 minutes, need special equipment, in half an hour the aircraft and heavy equipment,” – said Levin. “The experience of volunteers in Russia, for fastest response you must have teams on the ground.
The entire length of the border 60 km and Five groups of four, according to the expert, will be sufficient, as they will be able to provide presence at a distance of not more than 5 km from the point of arson. Traction with four people, carry equipment and capacity for 200 liters of water will arrive within 3-8 minutes depending on the roads, this is enough to extinguish within a few minutes,” he said, recommending to equip fire crews with blowers-sprayers and equip traktorny a high-pressure apparatus, similar to those used at car washes for churning the mud (such systems will be particularly effective when extinguishing a fire in the forest).
Our source notes the ineffectiveness and danger of using the usual fire trucks when fighting field and forest fires (as is often done in Israel, particularly on the Gaza border). “The difference between the features of the landscape (forest, grass and peat) and facility (in buildings and industrial facilities) fires caused by the physics of combustion, – says Levin. – When burning grass, there is light combustible materials having a very small heat capacity, they should not be cool enough to block the access of oxygen or to cool the burning surface. The fire from the grass you can just blow away in a strong stream of air burning grass cools the burning will stop.
When the building is burning, there is a large mass deeply warmed up combustible materials, even a very strong air flow not cooling, but rather increase the burning, due to the larger amount of oxygen. Therefore, the city fire equipment designed to supply the maximum amount of water for minimal time for cooling of combustible materials and floors air. The grass, too, you can put out. But the usual fire barrel has a water flow of about 500 liters per minute. In the fire truck is from 2 to 6 tons of water. Accordingly, even in a single barrel machine drains all the water for 4-12 minutes. Urban fire hoses heavy enough to shift them quickly is impossible, a firefighter with the barrel moving along the edge of the fire with a speed of 1,5 km/h.
That is, even the big fire truck at best enough to extinguish the 300 meters of the edge of the fire, and with little speed, then you will need to go to fill the tank with water. Light equipment allows to go along the edge of the fire with a speed of 2-5 km/h, leaving behind a completely extinguished the territory, and to expend not more than 10 liters of water to extinguish 100 meters of the edge of grass fire. In this flow the water, you can hitch a ride on tractoring or in the trunk of a regular jeep in cans, is that enough to work effectively.
If traction supply capacity of 200 litres, generator and car wash Karcher K5 or similar, you can just go along the edge of the fire, with enough water to extinguish 1-3 km of the edge, depending on the specific weather conditions and nature of the vegetation. Mobile groups with cheap equipment can be on duty on the spot and very quickly be at the scene of the fire, unlike fire engines, whose permeability is lower and the time of the refueling water more. On some types of modern fire engines are high pressure pumps, then they can be effectively used on grass fires, but only where the car can drive along the edge of the fire.”
