Electronics: Low-Flying Navigator

Low-level bombing in bad weather is a deadly job. The same radar used to find targets can help a plane to navigate safely past hills or mountains, but it may also alert defenders equipped to pick up its blips. Navigation with the help of ground-based radio-beam transmitters can rarely be counted on over enemy territory. What pilots need is a system that will lead them along their chosen route without signaling their presence to enemy trackers.

To supply a "silent" electronic navigation system, Northrop engineers, led by James Campbell, project manager, have borrowed...

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