Rekurve

Rekurve is a term used primarily in archery and refers to a type of bow in which the limbs curve away from the archer when the bow is drawn. The curved shape increases the amount of stored energy as the bow is flexed, allowing for greater velocity of the projectile when released. The design predates known mechanical bows and is found in many historical cultures, including Persian, Egyptian, and early Greek weaponry. Over time, the rekurve bow evolved into the modern recurve bow used in Olympic archery. Unlike the simple straight‑limbed longbow, the induced curvature permits a more efficient transfer of stored potential energy into kinetic energy. This results in a flatter trajectory and higher arrow speeds, which are advantageous in competitive target shooting.

In competitive archery, the rekurve bow is governed by strict regulations concerning limb length, draw weight, and mount style. Competition events require that the bow have a two‑handed draw, and the holder can only modify the grip and sight attachments within predefined limits. The Ark of the ARCO federation lists the rekurve bow as the only allowed bow in Olympic competition, distinguishing it from the compound bow and the traditional longbow. Recreational archers often favor rekurve bows because of their straightforward mechanical properties and lower maintenance requirements compared to the more complex compound systems.

Modern rekurve bows can be constructed from a variety of materials including laminated wood, carbon fiber, and hybrid composites. The base of the limb is typically engineered so that the curvature increases gradually from the handle toward the tips. When drawn, the curvature flattens, storing elastic potential energy through the limb flex. Release by a trigger mechanism or a simple manual lift then converts that stored energy into kinetic energy, propelling the arrow. The efficiency of the rekurve design makes it the preferred choice for sport archery worldwide.