In a conventional aircraft you sit on the roll axis. In a blended wing body design you can have off-axis motion that can increase motion sickness. Rather than rolling with the longitudinal axis of the aircraft, you move up and down when the aircraft banks. Not necessarily a deal breaker, but an additional difference to deal with.

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JumpCrisscross 2 hours ago | parent | next [-]

> In a blended wing body design you can have off-axis motion that can increase motion sickness

This sounds fixable in avionics and training. (Shallow, gradual banks.)

Note, too, that a larger lifting body needs to bank less to execute the same turn as a craft with more loading.

	▲	amluto 37 minutes ago \| parent [-]
		> Note, too, that a larger lifting body needs to bank less to execute the same turn as a craft with more loading. This is not really helpful for passenger comfort. For a turn to be comfortable, you want the turn to be such that the effective force the passengers feel has no sideways (relative to the passengers) component, and the required roll angle is only a function of the velocity and turning radius. The aircraft design is irrelevant. The Wikipedia article is mediocre: https://en.wikipedia.org/wiki/Coordinated_flight