Mk15 Mod IV Snakeye Retarder Fin for Mk82 aircraft bombs
|The Mk15 Mod IV retarder fin assembly provides ground
attack aircraft with a high speed, low altitude bombing capability and provides a
safe separation from bomb blast. It can be used in either closed low-drag or open
Release wire withdrawal at bomb release permits the release band to separate the latch. The 4 extendable drag plates are then forced open by individual leaf springs.
As the drag plates open and engage the air-stream, pressure builds-up and forces them to open wider. This pulls the sliding collar on the support column aft, thus crushing the shock absorber to cushion the fin opening. The degree of fins opening is proportional to schock absorber compression.