Stabilising vane for archery or crossbow arrows

Covering for arrows comprising:

• a sheath extending along a main extension direction and configured to fit on a shaft of an arrow extending along a longitudinal direction coinciding with said main extension direction when the sheath fits on the shaft;
• one or more stabilizing vanes placed at an end portion of the sheath, each stabilizing vane comprising:
• a base extending along a first direction between a first and a second end, the first direction coinciding with the main extension direction of the sheath;
• a body connected to the base and extending away from the base substantially along a second direction orthogonal to the first direction, said body having an airfoil having a convex upper surface and a concave lower surface, said airfoil being described by an NACA airfoil.

Arrow comprising:

• a shaft extending along a shaft direction between a tip and a tail,
• one or more stabilizing vanes arranged at the tail, said tail having one or more seats to each accommodate a respective stabilizing vane, each stabilizing vane comprising:
• a base shaped to be connected at a tail of a shaft of an arrow, said base extending along a first direction between a first and a second end, the first direction coinciding with the flight direction of the stabilizing vane when the arrow is in flight;
• a body connected to the base and extending away from the base substantially along a second direction orthogonal to the first direction, said body having an airfoil having a convex upper surface and a concave lower surface, said airfoil being described by an NACA airfoil.