What is Vs1g used for in gust-load certification calculations?

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Multiple Choice

What is Vs1g used for in gust-load certification calculations?

In gust-load certification, you need a defined speed that marks the point where the wing would stall if a gust pushes the airplane toward stall. Vs1g is the stall speed in a 1-g gust—i.e., the stall speed the aircraft would reach under a gust condition that adds one g of effective load. This value provides the standard reference for assessing how gusts can push the aircraft toward stall, and it anchors the gust-load calculations so the design can guarantee enough margin to avoid stall during gust events. The other options describe stall in calm air, minimum glide speed, or rotation speed, none of which specifically represent the gust-induced stall reference used in certification.

In gust-load certification, you need a defined speed that marks the point where the wing would stall if a gust pushes the airplane toward stall. Vs1g is the stall speed in a 1-g gust—i.e., the stall speed the aircraft would reach under a gust condition that adds one g of effective load. This value provides the standard reference for assessing how gusts can push the aircraft toward stall, and it anchors the gust-load calculations so the design can guarantee enough margin to avoid stall during gust events. The other options describe stall in calm air, minimum glide speed, or rotation speed, none of which specifically represent the gust-induced stall reference used in certification.

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