2 South Korean military planes crash, 4 killed, why does military plane have parachute, passenger plane does not?

2022-06-23 0 By

Two KT-1 trainers of the South Korean Air Force collided mid-air in southern South Korea on Friday afternoon and crashed near a field in Sacheon city, South Gyeongsang Province, killing all four people on board, media reported.The south Korean authorities are investigating the casualties and the cause of the crash.In fact, after the two planes collided, the pilots had ejected, and two pilots were filmed nearby parachuting to their lives, but the jump failed, killing all four people on board.On the other hand, after the accident, there is no parachuting link, and there is even no parachute on the civil airliner. What is the reason?Why are there no parachutes on passenger planes?World aviation history, has been a case of hijacked passenger planes, d. b. cooper in November 24, 1971, seized from Portland to Seattle, Washington’s northwest airlines flight 305, the plane hijacked by a bomb in his bag, and told a flight attendant, he need not even number of $200000, and two parachutes,2 backup umbrellas.After the plane landed, although the police had carried out a thorough deployment, desperately wanted to catch him, but Cooper only let go of 36 passengers and a stewardess, four crew members still hostage, for the lives of the four crew members, police had to comply with his demands.After receiving $200,000, parachutes and a full tank of gas, Cooper told the crew to fly the plane to Mexico at an altitude of about 3,000 meters and a speed of about 278 kilometers per hour.By the time the plane was in the air, the crew noticed that Cooper had disappeared and judged that he had opened the door and bailed out.Although police have been searching for him and searching for places where he might have landed, Cooper has since completely disappeared, alive or dead.Cooper is one of the few people who have parachuted from a commercial airliner. When he parachuted, he had very strict requirements on the aircraft. First, he wanted the aircraft to keep flying at a height of 3,000 meters, while ordinary commercial aircraft cruise at around 8,000 meters.So why did Cooper choose 3,000 meters?This is because in the troposphere, when the altitude increases by 1,000 meters, the temperature drops by about 6℃. At the altitude of 3,000 meters, the air pressure, oxygen and temperature can still meet human survival.At an altitude of 8,000 meters, the outside temperature will be very cold, as low as minus 40 degrees Celsius.For example, the hero pilot of Sichuan Airlines broke the windshield on the right seat of the cockpit and fell off during the flight. Monitoring showed that the plane was flying at an altitude of 32,000 feet (9,753.6 meters) and the temperature was around minus 40 degrees Celsius.Cold temperatures can cause passengers to lose temperature, especially at such low temperatures that they may face severe hypothermia if they try to survive by parachuting out of the plane. In this case, the body becomes rigid, making it difficult to perform precise operations and even impossible to open a parachute.In addition, the air in the high air is thin and the oxygen content is low. If you jump directly from 10,000 meters, you may have coma and other symptoms, and the death rate is very high.Followed by, “is in the process of plane smooth sailing, skydiving, and in the process of smooth sailing, passengers don’t have to jump, but when the plane encountered serious accident, the plane is bound to a strong turbulence, if you do not fasten your safety belt, may in the process of turbulence were to jilt to jilt to, will not only harm oneself, also harm to other passengers fasten your seat belt.Also, airplane doors are hard to open at high altitudes, and even if they do, they can throw all passengers out of the air before they’re ready.Even if there were no flings and passengers parachuted in turn, the survival rate would not be very high.Because parachuting is a very professional thing, people need to open the guide umbrella, the main umbrella and so on in the process of parachuting, but also adjust their position in the air, maintain stability, which for passengers who have not received professional training, parachuting is no more than suicide, so there is no parachuting on the civil airliner.In fact, the plane attaches great importance to safety accidents, and tries its best to avoid the possibility of accidents in every link. Compared with passengers parachuting to survive, the possibility of saving the plane is higher depending on the precise and meticulous safety inspection and the operation of the captain.Why do military planes have parachutes?Unlike passenger aircraft, military aircraft are usually equipped with parachutes, mainly because of the different application scenarios of military aircraft and civilian aircraft.First of all, in order to ensure safety, comfort and economy, civil airliners generally choose an altitude of about 8000 meters, which is just reaching the stratosphere as the cruising altitude. When flying at the cruising altitude, airliners are generally safe.However, the flying altitude of military aircraft is not fixed, and the military aircraft is small and delicate, and the maneuverability is very good. Once there is an accident in the high air, the pilot can control the aircraft to descend to a safe altitude in a short time, and the success rate of parachuting at this time is very high.Moreover, military aircraft face a relatively harsh environment, in the process of performing tasks encountered accidents are much higher than passenger planes, especially in combat, military aircraft still have the possibility of being destroyed by the other side, so the safety of pilots should be considered at the beginning of the design of military aircraft.In addition, military pilots face very bad conditions when performing tasks. For example, when flying at super high speed, pilots have to face strong overload, which has a great impact on their bodies. At this time, they must wear special clothes and oxygen masks.Moreover, the clothing of military pilots has requirements on water resistance and warmth protection. Even if they are directly exposed to high air, pilots will not encounter problems such as hypoxia and temperature loss.In addition, parachuting is included in the training of military pilots to ensure that they can parachute to survive an emergency.However, not with parachutes, military pilots are safe, there are still many pilots parachuting failure, such as: the south Korean two military planes collided, although the pilots parachuted to survive, but according to South Korean media reports, all four pilots died.There are also many pilots to save their property, to avoid further damage, voluntarily give up the opportunity to jump.For example, Liang Wanjun, a first-class test pilot of China’s Air Force, was flying the JF-17 Thunder in 2004 when the jet’s engine stopped in mid-air at an altitude of 4,700 meters.In this case, the pilot could have chosen to parachute out of the air, but once the plane crashed, not only would a lot of experimental data not be available, but it would take a lot of time to find the cause of the accident, which would be a waste of time.In order to keep experimental data, in order to protect scientific research aircraft, Liang Wanjun gave up parachuting opportunity, driving no power aircraft in life and death 8 minutes for crash landing, and the successful crash landing case below this kind of circumstance is too little, once the failure will cause the plane to destroy the accident.In one of the world’s most remarkable feats of aviation, Liang managed to land the plane and save the data.Two military planes crash after colliding ## South Korea