gust envelope

gust envelope

gust envelopeclick for a larger image
Gust and load limit diagram.
A basic aircraft design envelope that indicates the safe operating limits of an aircraft of given weight in gusty conditions. The air speed is on the X-axis of the envelope, and the load factor is on Y-axis. The illustration indicates the load factor experienced by an aircraft when gust values are 30 and 45 ft per second.