On the doors of Hamburg’s exhibition center, the venue for the Aircraft Interiors Expo April 10-12, the slogan of one seat supplier said it all: “Maximize micro spaces.” The motto illustrates the flurry of ideas from airframers and cabin equipment suppliers for carriers to use every cubic inch to gain revenue. And what appears to be painstaking and tiresome work, given fuselage volume constraints and old designs, seems to have spurred the imagination of engineers. Better ...