公开(公告)号：US11781841B2

公开(公告)日：2023-10-10

申请号：US18002586

申请日：2021-06-17

Applicant: SAAB AB

Inventor： Joakim Berggren ,  David Brocker

IPC: F42B10/14

CPC classification number: F42B10/14

Abstract: The invention relates to a wing arrangement (10) for a projectile (1). The wing arrangement (10) comprising: a wing shaft (20) extending longitudinally between a proximal end (21) and a distal end (22) along a wing shaft axis (R), the proximal end (21) being configured to be inserted into a wing shaft aperture (6) in a circumferential wall (2) of the projectile (1), the wing shaft (20) being rotatable around the wing shaft axis (R); a wing blade (30) connected to the distal end (22) of the wing shaft (20); a deployment arrangement (40) configured to control a rotational movement of the wing shaft (20) around the wing shaft axis (R), whereby the wing blade (30) is deployed from a folded state to a deployed state. The deployment arrangement (40) comprising a pre-tensioned torsion spring (41) arranged coaxially with the wing shaft (20), wherein a first end (42) of the torsion spring (41) is coupled to the wing shaft (20) and a second end (43) of the torsion spring (41) is configured to be coupled to the circumferential wall (2) of the projectile (1). The invention also relates to a method for deploying a wing blade (30), use of a wing arrangement (10), a projectile (1) and a method for assembly of a wing arrangement (10).