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Boeing YAL-1 ✕ Boeing E-4 ✕
Manufacturer Boeing Boeing
Description The Boeing YAL-1 airborne laser testbed was a modified Boeing 747-400F with a megawatt-class chemical oxygen iodine laser (COIL) mounted inside. The Boeing E-4 Advanced Airborne Command Post (AACP), the current "Nightwatch" aircraft, is a series of strategic command and control military aircraft operated by the United States Air Force (USAF).
ICAO Code B742
First Flight 2002-07-18 1973-06-13
Entry Into service 1974-01-01
Service End 2014-09-25
Designer Boeing Boeing
Type Airborne Laser (ABL) anti-ballistic missile weapons system
Length (m) 70.6 70.4088
Height (m) 19.4 19.2024
Cockpit Crew 6 4
Max Speed (km/h) 1013.969 968.5952
Cruise Speed (km/h) 925.0732 894.5152
Max Ceiling (m) 13716
Armament 1 × COIL (Chemical oxygen iodine laser)
Capacity Description up to 108 mission crew
Endurance (h) 150
National Origin United States of America
Number Built 1 4
Powerplant Description 4 × General Electric CF6-80C2B5F turbofan engines, 276 kN thrust each 4 × General Electric F103 turbofan engines
Primary Users United States Air Force United States Air Force
Status Canceled In service
Wikipedia Article (URL) en.wikipedia.org/wiki/Boeing_YAL-1 en.wikipedia.org/wiki/Boeing_E-4
Flat Wing Span (m) 64.4 59.436
Flat Wing Area (m²) 510.9667
Wake Category H
Aircraft Engine General Electric CF6
Number of Engines 4 4