North Korean rocket launch failure to prove its remaining multi-stage separation defects
Korean rocket launch TV screenshot
Korean Central Television broadcast the evening of April 7, 5, launch activities on-site screen. This is to control the overall command post on-site screen. Xinhua News Agency/Agence France
special correspondent/Zhang Zhuo
North Korea has carried out the rocket launch activities caused uproar in the international community. Although North Korea claims that the success of its launch, the “light star II” satellite successfully into orbit, but the United States, Japan and South Korea have said publicly that North Korea did not find the satellites in orbit, the satellite did not receive the signals emitted, North Korea launched two, three booster rocket crashed into the Pacific Ocean together, prove that a launch failure.
analysts pointed out that despite North Korea’s launch activities in the technology did not achieve the desired results, but the rocket’s flight path that North Korea’s rocket technology is indeed made progress, but also from a political perspective, North Korea this launches activities to achieve its purpose.
shoot farther irksome
launch activities in North Korea shortly after the Korean Central News Agency announced that North Korea used launch vehicle, “Galaxy two No. “successfully satellite” light star II “into orbit, the satellite orbit normal rotation in the exclusive, and issued a revolutionary hymn” Song of General Kim Il Sung. ” However, close monitoring of North Korean launch of the United States, Japan, Korea and other countries believe that North Korea did not launch satellites into orbit.
responsible for tracking the activities of North Korea launched the North American Aerospace Defense Command military briefing announced that North Korea’s first stage booster rocket fell into the Sea of ??Japan, boosters and other things fall in the North Pacific Ocean carrying , carrying objects weighing about 30 kg. The command also said that any missile failed to enter orbit, and any debris did not fall on Japanese territory. Briefing also said that rockets in North America and Hawaii are not a threat, it did not take any measures. This means that, while the second and third stage rocket to fall, this two-stage rocket’s separation did not succeed.
but the outside world that despite the North Korean launch event does not prove successful, but still show North Korea has made progress in rocket technology.
North Korea was in August 1998 and July 2006, conducted as an index for the launch activities.
1998 年 when North Korea announced the launch of “Star Light One”, but is widely considered the launch of the “Taepodong-1″-type missiles. The launch was the first and second stage booster rocket run, but the third stage rocket crashed. First and second stage rocket from the launch site at 250 km and 1646 km of local fall. Launched in 2006, is the “Taepodong-2″ missiles, but missile launch more than 40 seconds after the explosion.
in the April 5 launch, the South Korean intelligence authorities think North Korea’s first-and second-class booster rocket at more than 500 kilometers away from the launch site and over 3200 km at the Japan Sea and North Pacific waters fall. If the rockets fired into ballistic missiles, when compared with 1998, extend the range more than doubled.
Japan’s “Sankei Shimbun” analysis, said North Korea’s launch of this display technology has improved, take 7 minutes to reach the Japanese archipelago over the display of the missile flight time to maintain a normal speed, and boost the missile first stage device with the greatest driving force is the most important part of the development, successful separation of great significance.
Maxwell Air Force Base, United States Institute of Aeronautics and Astronautics, Professor John Sheldon believes that if from the perspective of enhancing military capabilities, North Korea’s launch event last weekend was a success. Sheldon said: “If the real purpose is to develop the Korean long-range ballistic missiles, not satellites into orbit, the launch was successful, which is the longest distance of North Korean ballistic missiles once launched, that North Korea has In the short and long term to improve the ability range ballistic missiles. “
former U.S. Defense Department project analysis and evaluation of director Barry Watts that although North Korea is not able carrier into space, but the Rockets obviously caused by the U.S. military launched a high degree of attention, in this sense that North Korea’s attempt is successful.
separated from the rocket may be at fault
North Korea prior to launch the International Maritime Organization had issued a circular, said first stage booster rocket will fall at a distance North Hamgyong flower bed county Musudan test site 650 km away in the Sea of ??Japan, the second stage booster rocket will fall in 3600 kilometers from the North Pacific Ocean. North Korea fired an exception to public information in advance, the international community that North Korea’s rocket technology has a very strong faith.
but the United States and Japan’s intelligence agencies to determine that the first and second stage booster rocket crash site failed to achieve the desired distance. Korea Aerospace University, Professor Zhang Yong root out that this can be considered not normal at all levels of the rocket burn. Korea Aerospace Research Institute to study the emitter Minister Cho said that if North Korea is indeed the case in accordance with pre-release design emitter, then the rocket combustion can be considered a problem. In short, the combustion engine does not achieve the desired level, it can not be sent to the third stage booster rocket, the ideal height.
generally believed that the third stage booster rocket’s role is ultimately to make ballistic missiles or satellites into orbit in the direction pointing to the ground. Whether it is because the first and second stage booster rocket propulsion enough, or because the third stage booster rocket problem itself, the launch can be said that the DPRK did not succeed to show the possibility of ballistic missiles can be converted into . In particular, it is doubtful that two, three booster separation may not fall together, indicating that North Korea’s ballistic missile and satellite launch of the core technology – multi-stage rocket separation, but also flawed.
Some experts believe that North Korea launched a rocket carrying the day the weight of about 30 kg, flying over 3200 km, but if you use the weight of 500-1000 kg warhead, the range must be further reduced. Intercontinental ballistic missile to fly at least 5,500 km and thus the Korean intercontinental ballistic missile technology is not yet mature. And even if North Korea successfully to the satellite into orbit, if the intercontinental ballistic missile warheads also need to enter the atmosphere, then must have the high-temperature resistant technology. But North Korea is to master the technology, remains unclear.
North Korean rocket to force U.S. to the negotiating table
Western media that, no matter success of the launch, North Korea at the political level at least was a success, played a bonus effect. By doing so, North Korea has at least three goals:
First, North Korea’s current launch activities help to build national unity. North Korea has identified the party, government, military key positions Supreme People’s Assembly will be held the first plenary meeting held in early April, Kim Il Sung’s birthday (15) and the People’s Army, Army Day (25th) also in April. The launch can be seen as support Kim Jong Il’s “Salute.”
Second, the international community in dealing with differences of opinion on the nuclear issue increased, the increase in the relevant countries to North Korea between the “maneuvers” in space. North Korea to launch activities, the UN Security Council held a meeting quickly, but on how to respond have not reached a common consensus, it is sufficient to illustrate this point.
Third, the Obama administration to put pressure on their return to the negotiating table. North Korea early in the Obama administration rocket, passing a strong signal, and the test administration’s crisis response and management capabilities. 1998 launch, North Korea “Taepodong-1″ missile technology level beyond the imagination of the United States, so much the impact of the United States rushed to start direct talks with North Korea. The launch event is also the United States pulled to the negotiating table is worth the wait. (Zhang Zhuo)