Russian airframer Irkut (stand W560) insists that its MS-21 family will give passengers the perception of widebody comfort in a single-aisle jet.
It intends to reduce the feeling of confinement by creating an "open" V-shaped cabin entrance and interior aisle space, and having "no sharp angles", said Irkut vice-president for sales and marketing Kirill Budaev.
During a briefing at the Dubai air show, he said that fear of flying was partly caused by the sense of enclosure.
The MS-21 would have a wider cabin than competing aircraft. Irkut has tested various configurations for turnarounds, finding that a 22.5in (57cm) aisle saves around 1.1min.
"Further width in the aisle doesn't bring considerable improvement," said Budaev, speaking of the optimum width.
An assessment of the MS-21-200 indicates a turnaround time of 25.1min for 168 passengers, and 29.7min for 199 passengers on the larger MS-21-300.
Passengers will have access to large-capacity pivot baggage bins, to speed up boarding times, and the MS-21 aisle will also be wide enough to allow easy passage during cabin service.
Irkut claims it has a backlog of 235 aircraft for the MS-21 family, including orders from state firm Rostekhnologii and lessor Ilyushin Finance (IFC).