And talk about the missing helicopter

by:和菜头

did not expect this to these two issues was also discussed, I understand how much air a little bit, then here talk about personal views.

--- Why did not immediately organized a large-scale airborne »

after the earthquake is the most asked this question. Bumang first and discuss this issue, see the first successful airborne high-speed --- 4,999 meters. Normal military parachuted into low-altitude parachute jump and the high-altitude, low-altitude, low-to 150 meters, high-altitude over 1000 meters. 4,999 m jump on a local issue - the high altitude, the mountain over 3,000 meters. In order to ensure the safe airborne, to 5,000 meters in altitude parachuting, is to parachute to full-time umbrella. If the highly inadequate, then it is likely paratroopers had Zadao umbrella of the mountains.

If read the Normandy landing of the documentary, we find that the days of D-Day and the election of the election. Must weather Qinghao, moonlight as Lang. This is because if Nongyun fill empty locations, but heavy rain Qingpen, the paratroopers will not be able to accurately reach the designated locations. But due to bad weather, air disorder, the parachute itself is likely to cause trouble. In inclement weather parachute, it is suicide.

Wenchuan the weather was very bad, the local high altitude, is not suitable for parachuting, especially large-scale paratroop landing. Therefore, the final task team is 15 people to parachute, landing and ground investigation carried out after positioning for follow-up aerial prepared to do earlier. Is not reluctant to airborne, but conditions do not have. If the ground is the Great Plains, the weather Qinghao, then have a sky parachutes.

this matter if by some netizens said, U.S. soldiers told to do, it is estimated that they are not going to jump. But you Numuershi to Zhuanguo Lian, asked: you are not crazy » Told us to die.

--- Why did not immediately enter the disaster areas helicopter team »

At that time, blocking roads, the use of helicopters is the best approach. However, from the angle of flight, the helicopter flying at low altitude, it must be called to adopt a "circled visual approach"approach. In other words, the flight should be maintained in the course of visual visibility. This is not like civilian aircraft, civilian aircraft are based instrument navigation, ground electronic signals can be guided to a very low height (decision height) only to land. Before flying in thick fog, heavy rain did not hinder, helicopters can not do.

when the weather is very bad disaster areas, visibility is not high, Qingpen heavy rain, accompanied by all kinds of air turbulence. Helicopters in this climate conditions, there is no ground guidance, flight safety is not guaranteed, even the landing is very difficult. QQ earlier a girl in the publishing of landing site, was eventually adopted, one can imagine the difficulties.

It was said that the "all-weather helicopter,"this very good idea, but should also ask what, this helicopter in the world, and few countries capable of producing.

original link:http://www.hecaitou.net/?p=3027