missile


North Korea’s Latest Missile Test

, co-director and senior scientist

Various sources are reporting that North Korea test-launched two ballistic missiles tonight on lofted trajectories.

One of the missiles is reported to have reached a maximum altitude of 910 km (570 miles) and splashed down at a range of 450 km (280 miles) from the launch point. This missile would have had a burnout speed of about 3.74 km/s with a loft angle of 81.5 degrees, and a flight time of about 17 minutes.

If flown on a standard trajectory with the same payload, that missile would have a maximum range of about 1,900 km (1,200 miles).

This would classify the missile as medium range (1,000 to 3,500 km).

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Reentry Heating from North Korea’s July 4 Missile Test

, co-director and senior scientist

In a previous post, I estimated what North Korea could have learned from its May 14 Hwasong-12 missile test that is relevant to developing a reentry vehicle (RV) for a longer range missile.

I’ve updated the numbers in that post for the July 4 missile test (Table 1). In particular, I compare several measures of the heating experienced by the RV on the July 4 test to what would be experienced by the same RV on a 10,000 km-range missile on a standard trajectory (MET). Read more >

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