Stepless (aircraft)

In aircraft design, stepless means that the nose of the aircraft has no separate "windscreen" panels directly in front of the pilot's or co-pilot's seating positions, and generally has no "breaks" in the nose contour — curved or otherwise — from their absence. In the conventional design, the pilot's cabin is a different part of the aircraft than the nose.

B-29 Superfortress. Note the round, stepless nose.

The Messerschmitt Me 264 V1 first prototype, with stepless nose glazing almost visually replicating the Superfortress' own

Preserved Bristol Blenheim Mk.I, with stepless cockpit from its forward upper nose countour.

B-17 Flying Fortress. Note the stepped cockpit design.