An aircraft attitude display format which maintains the horizon reference line always in view and which presents the pilot with multiple indications of aircraft attitude differing from level flight. The multiple indications include attitude registration along an angular scale and shape change of the horizon reference line. The display format has the appearance of a fish-eye lens derived optical image and is preferably placed in this form by electronic image processing--which is exemplified by an...

The absorbency of regenerated viscose filaments is improved by overfeeding a continuous tow of partially regenerated filaments onto a moving foraminous support so that regeneration occurs prior to and after the filament tow is overfed onto the moving support.