[KMag]

The GP is suggesting the doors should have had zig-zag edges.

However, from what I've read, it sounds like radar reflectons from the doors themselves are dwarfed by radar signals bouncing off the upper bulkhead of the bomb bay. If they made the side bulkheads of the bomb bay at 90 degrees to the upper bulkhead, then an incoming radio wave bouncing off both the upper and side bulkheads will leave anti-parallel to its incoming direction... right back at the sending radar. (This geometric identity is used on the laser reflectors left on the moon. They send the laser right back at the sender without having to track the Earth.)

Though, maybe the reporting I've read is just imprecise, and maybe the doors do have a larger radar cross-section than the bomb bays themselves.

[jasonwatkinspdx]

The GP is asserting, without any evidence at all, that the designers simply did not think about the radar return from the bomb bay opening. That's a rather absurd position to take, vs the more banal explanation that engineering always involves tradeoffs.