* 지구에서 달까지 #38만 km로 빛으로 1.2초에 가는 거리다. 지구와 달의 공전 주기가 같은 27일이다. 따라서 지구에서는 달의 닻은 면만 보게 된다. 최근 중국이 세계 최초로 달의 뒷면에 도착한 기술은 대단한 이정표다. 우주선이 달까지 가려면 먼저 지구의 괘도를 돌아 달과의 최적 거리 계산. 재추진하고 괘도를 벗어나 달을 향해 양쪽 중력의 균형 경계선(5/7) 지점까지 가서. 경계선에서 다시 재추진하여 달로 향한다. 월괘도에 도착하여 돌면서 안정화 후 달에 진압. 총 소요시간은 2030일. * 지구에서 달까지 #38만 km로 빛으로 1.2초에 가는 거리다. 지구와 달의 공전 주기가 같은 27일이다. 따라서 지구에서는 달의 닻은 면만 보게 된다. 최근 중국이 세계 최초로 달의 뒷면에 도착한 기술은 대단한 이정표다. 우주선이 달까지 가려면 먼저 지구의 괘도를 돌아 달과의 최적 거리 계산. 재추진하고 괘도를 벗어나 달을 향해 양쪽 중력의 균형 경계선(5/7) 지점까지 가서. 경계선에서 다시 재추진하여 달로 향한다. 월괘도에 도착하여 돌면서 안정화 후 달에 진압. 총 소요시간은 2030일.
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![[미적분의 힘 Infinite Powers]스티븐·스토로갓츠 Steven Strogatz-모든 변화는 미적분으로 설명된다!](https://blog.kakaocdn.net/dn/ylsg7/btqtVt0FyyY/q1rxZhoNZOdsqVqUO0yjfk/img.bmp "[미적분의 힘 Infinite Powers]스티븐·스토로갓츠 Steven Strogatz-모든 변화는 미적분으로 설명된다!")
North Korea’s ICBM launched from a kilometer south of Pyongyang’s Sunan Airport on the 24th, where experts fired intercontinental ballistic missiles (ICBMs) at the launch site. It is the first time that North Korea has launched a missile here in a place where private airport facilities, including airliners, are concentrated. According to Voice of America (VOA) on the 31st, the intermediate road between the southern runway of Sunan Airport and the missile base (Sinri missile support facility) in the south was evaluated as the ICBM launch site. The day after the missile launch, North Korea successfully launched a new type of ICBM, Hwaseong-17, tv.kakao.com North Korea’s ICBM, launched a commercial plane from the south of Pyongyang’s Sunan Airport on the 24th. It is the first time that North Korea has launched a missile here in a place where private airport facilities, including airliners, are concentrated. According to Voice of America (VOA) on the 31st, the intermediate road between the southern runway of Sunan Airport and the missile base (Sinri missile support facility) in the south was evaluated as the ICBM launch site. Earlier on the 25th, the day after the missile launch, North Korea said, “Successfully launched the new ICBM, Hwaseong-17… tv.kakao.com
★North Korea ICBM launched from 1km south of civilian aircraft.. Experts reportedly launched an intercontinental ballistic missile (ICBM) in the southern part of Pyongyang’s Sunan Airport on the 24th. It is the first time that North Korea has launched a missile here in a place where private airport facilities, including airliners, are concentrated. A satellite image of the site (top square) where North Korea launched an intercontinental ballistic missile (ICBM) and the Shinri missile support facility (bottom circle) was taken on the 24th. If you move northeast along the road, you will find Pyongyang Sunan Airport. According to Voice of America (VOA) on the 31st, the intermediate road between the southern runway of Sunan Airport and the missile base (Sinri missile support facility) in the south was evaluated as the ICBM launch site. Prior to this, North Korea released related videos and photos on the 25th, the day after the missile launch, saying, “We succeeded in launching the new ICBM, the Hwaseong-17. Broadcasting reported that the ICBM launch site is about 800m straight away from the Sinri missile support facility and 1.2km away on the road. In a video released by North Korea, it is pointed out that ICBMs mounted on mobile launch vehicles (TELs) are stored in the facility. The video even shows North Korean leader Kim Jong Un looking around the facility and moving to the ICBM launch site together. In a video released by North Korea on the 25th of this month, the day after the missile launch, Kim Jong-un is seen going out of the facility where the missile is stored along with the “Mars-17” mounted on the mobile launch vehicle (TEL). The Institute for Strategic and International Studies (CSIS), a U.S. private think tank of Yonhap News Agency, evaluates the Shinri missile support facility as a facility for manufacturing, assembling and inspecting medium- and long-range missiles in 2020. However, the test launch confirmed that it would actually be used as a missile base. A tunnel entrance was also found under a small mountain in the south of the Sinri missile support facility. As a result, the possibility of North Korea hiding the missiles on the TEL in the tunnel and launching them in case of emergency has been raised. Experts say the reason for North Korea’s missile launch from the south of the airport is difficult to understand. This is because North Korea has started test-launching missiles in the northern part of the airport, not in the South, which has many private facilities. According to satellite photos, the missile launch site is about 1km away from the runway for commercial aircraft and 1.5km away from the airport terminal. In addition, five to six Korean Air passenger planes were moored 1.2km from the launch site. In a related development, Joseph Bermudez, a senior researcher at CSIS, told the broadcast, “The aircraft did not float in the sky and there were no civilians around it,” but added, “This is not common as we (the U.S.) do not do so.” David Schmuller, a senior researcher at Middlebury Institute of International Studies, also said, “It is not a good idea,” adding, “As can be seen from past Mars-14 launches, it seems that they tried to launch near missile facilities.” ★North Korea ICBM launched from 1km south of civilian aircraft.. Experts reportedly launched an intercontinental ballistic missile (ICBM) in the southern part of Pyongyang’s Sunan Airport on the 24th. It is the first time that North Korea has launched a missile here in a place where private airport facilities, including airliners, are concentrated. A satellite image of the site (top square) where North Korea launched an intercontinental ballistic missile (ICBM) and the Shinri missile support facility (bottom circle) was taken on the 24th. If you move northeast along the road, you will find Pyongyang Sunan Airport. According to Voice of America (VOA) on the 31st, the intermediate road between the southern runway of Sunan Airport and the missile base (Sinri missile support facility) in the south was evaluated as the ICBM launch site. Prior to this, North Korea released related videos and photos on the 25th, the day after the missile launch, saying, “We succeeded in launching the new ICBM, the Hwaseong-17. Broadcasting reported that the ICBM launch site is about 800m straight away from the Sinri missile support facility and 1.2km away on the road. In a video released by North Korea, it is pointed out that ICBMs mounted on mobile launch vehicles (TELs) are stored in the facility. The video even shows North Korean leader Kim Jong Un looking around the facility and moving to the ICBM launch site together. In a video released by North Korea on the 25th of this month, the day after the missile launch, Kim Jong-un is seen going out of the facility where the missile is stored along with the “Mars-17” mounted on the mobile launch vehicle (TEL). The Institute for Strategic and International Studies (CSIS), a U.S. private think tank of Yonhap News Agency, evaluates the Shinri missile support facility as a facility for manufacturing, assembling and inspecting medium- and long-range missiles in 2020. However, the test launch confirmed that it would actually be used as a missile base. A tunnel entrance was also found under a small mountain in the south of the Sinri missile support facility. As a result, the possibility of North Korea hiding the missiles on the TEL in the tunnel and launching them in case of emergency has been raised. Experts say the reason for North Korea’s missile launch from the south of the airport is difficult to understand. This is because North Korea has started test-launching missiles in the northern part of the airport, not in the South, which has many private facilities. According to satellite photos, the missile launch site is about 1km away from the runway for commercial aircraft and 1.5km away from the airport terminal. In addition, five to six Korean Air passenger planes were moored 1.2km from the launch site. In a related development, Joseph Bermudez, a senior researcher at CSIS, told the broadcast, “The aircraft did not float in the sky and there were no civilians around it,” but added, “This is not common as we (the U.S.) do not do so.” David Schmuller, a senior researcher at Middlebury Institute of International Studies, also said, “It is not a good idea,” adding, “As can be seen from past Mars-14 launches, it seems that they tried to launch near missile facilities.”