A Constantly Computed Impact Point (CCIP) related to the Continually Computed Release Point (CCRP) is a calculation provided by a weapon’s sighting system. It is a predicted point of impact found from the launch platform’s movement, the target’s movement, gravity, projectile launch velocity, projectile drag, and other factors that can be entered. It is usually displayed on the Head Up Display (HUD).
‘The pilot enters the target’s elevation into the CCIP system. This is obtained from either looking at the elevation lines on a map (old school) or from a tagging the target with a targeting pod (new school) or from a JTAC (phone a friend).
‘The jet then takes aircraft orientation data, specifically altitude (“Opposite” in the above images) and dive angle (“theta” in the above images), and does some math using “sine” to determine the hypotenuse, or slant range to the target. It also does some math using “tangent” to determine the adjacent, or horizontal distance to the target.
‘Note that determining the length of “opposite” doesn’t really care about the elevation below the jet. It only cares about your elevation relative to the target. Your target can be in a valley and the system doesn’t care if you’re flying over a mountain ridge or the ocean when you send your weapon on its merry way.
‘The system also makes some adjustments based on what it knows about the weapon ballistics (rockets, bombs, The Gun, etc.) and how the weapon will be affected by the aircraft’s speed. There are also some adjustments based on the system’s best guess of what the wind is doing between the jet and the ground, extrapolated from whatever wind the jet is experiencing at the moment.
‘That all combines into a handy visual presentation on the heads-up display (HUD) that helps the pilot put the jet in the right place to get the weapons to their intended receiver. The little pipper in the center of the circle indicates where the weapon is expected to impact if you hit the pickle button at that precise moment, assuming the elevation is correct in the system.’
‘It’s a pretty snazzy system, and has proven quite effective over the years.
The first Raytheon Trophy awarded to an F-15E Strike Eagle fighter squadron Since 1953, the… Read More
James Stockdale James Bond Stockdale, US Naval Academy Class of ’47, is the epitome of… Read More
The UH-60 Black Hawk during Operation Urgent Fury In October 1983, the US Army received… Read More
The F/A-18 Super Hornet The F/A-18E and F/A-18F are designed to meet current Navy fighter… Read More
The last thing a Navy pilot launching from an aircraft carrier wants is that sinking… Read More
Fighter pilots do not chat with each other in the way you see in Top… Read More