This means that when having a target track the pilot should fly the aircraft to place the pipper over the target to hit it. The diamond will display radar line of sight to the target (target location). If target data is available from the WCS (target tracked in an STT mode) the pipper instead displays bullet location at the target’s current range out to 4,000 feet. The pipper representing bullet location at 1,000 feet and the diamond representing the bullet location at 2,000 feet. In RTGS the WCS computes the bullet trajectory and displays the location the bullets will pass through at 1,000 and 2,000 feet, if no target data is available from the WCS. The real-time gunsight mode is the standard gun mode when in the air-to-air mode with the gun selected. The GUN ELEV panel on the pilot right vertical panel sets the lead, normally this should be set to 53 milliradians to place the manual pipper on the gun sight line. The manual piper is adjustable to enable selection of desired lead. Real target range and needed deflection needs to be estimated by the pilot. In this mode the pilot has to manually aim the gun using the manual pipper as reference to hit the target. This mode is accessed by depressing and releasing the CAGE/SEAM pushbutton on the left throttle when in the air-to-air mode with the gun selected. In manual the HUD displays the ADL, the armament legend and the manual pipper. The default value is 200 bullets but can be set otherwise by the ground crew. The maximum number of bullets fired by a trigger pull can be set to be either 50, 100, 200 or unlimited. Selection of ACM will set it to high automatically. The gun rate is selected by the GUN RATE switch on the ACM which also indicates selected option. The lower rate normally used for air-to-ground engagement and the higher rate for air-to-air engagement. The gun is capable of a 4 000 rpm or 6 000 rpm mode. The indicator counts down from 650 but can manually be reset by rotating the knob below the indicator to the desired quantity. Selection of the gun is indicated on the bottom of the hud by a capital G with remaining hundreds of rounds indicated below.Īpart from the indication on the HUD the rounds remaining indicator on the pilot right vertical panel also shows remaining rounds. For air-to-air it’s the manual sight and the RTGS (real-time gun sight). The WCS can however provide symbology on the HUD to increase gun accuracy.įor both air-to-air and air-to-ground modes the gun has two sights available. To fire the gun, no input is needed from the WCS, the gun can be fired by the trigger on the pilot stick when selected by the weapons selector on that same stick, The gun itself is mounted to be elevated slightly more than 3° from the ADL to provide built-in lead for dog-fight situations. The F-14 carries the gun internally mounted beneath the cockpit with the muzzle being located on the lower left side of the fuselage.Ħ76 20 mm rounds are carried in the ammunition drum for the gun and retains the spent cases after the rounds have been fired. The M-61 Vulcan is a six-barreled hydraulically driven 20 mm automatic cannon capable of firing over 6,000 rpm (rounds per minute). Navy photo by Photographers Mate Airman Kristopher Wilson. M-61 Vulcan Six-Barreled Gatling Cannon.Weapons and Weapons Employment Overview.
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