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См. также в других словарях:

• Proportional navigation — (PN) (Pro Nav) is a guidance law used in some form or another by most homing air target missiles. It is based on the fact that two vehicles are on a collision course when their direct Line of Sight does not change direction. PN dictates that the… …   Wikipedia

• Marshall Space Flight Center — George C. Marshall Space Flight Center Aerial view of the test area at MSFC …   Wikipedia

• Flight simulator — [ twinjet flight simulator] A flight simulator is a system that tries to copy, or simulate, the experience of flying an aircraft. It is as realistic as possible. The different types of flight simulator range from video games up to full size… …   Wikipedia

• Dalek variants — …   Wikipedia