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USAF BOEING E-3 SENTRY (AWACS) AIRCRAFT PICTURES HISTORY AND FACTS
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US MILITARY BOEING E-3 SENTRY (AWACS)
AIRCRAFT HISTORY PICTURES & FACTS

e3 awacs
e-3 sentry

The E-3 Sentry is an airborne warning and control system (AWACS) aircraft provides all-weather surveillance, command, control and communications needed by commanders of U.S., NATO and other allied air defense forces.

Features
The E-3 Sentry is a modified Boeing 707/320 commercial airframe with a rotating radar dome. The dome is 30 feet (9.1 meters) in diameter, six feet (1.8 meters) thick, and is held 11 feet (3.33 meters) above the fuselage by two struts. It contains a radar subsystem that permits surveillance from the Earth's surface up into the stratosphere, over land or water. The radar has a range of more than 250 miles (375.5 kilometers) for low-flying targets and farther for aerospace vehicles flying at medium to high altitudes. The radar combined with an identification friend or foe subsystem can look down to detect, identify and track enemy and friendly low-flying aircraft by eliminating ground clutter returns that confuse other radar systems.

USAF E-3 Sentry Awacs

Other major subsystems in the E-3 are navigation, communications and computers (data processing). Consoles display computer-processed data in graphic and tabular format on video screens. Console operators perform surveillance, identification, weapons control, battle management and communications functions.

The radar and computer subsystems on the E-3 Sentry can gather and present broad and detailed battlefield information. Data is collected as events occur. This includes position and tracking information on enemy aircraft and ships, and location and status of friendly aircraft and naval vessels. The information can be sent to major command and control centers in rear areas or aboard ships. In time of crisis, this data can be forwarded to the president and secretary of defense in the United States. It is a jam-resistant system that has performed missions while experiencing heavy electronic countermeasures.

In support of air-to-ground operations, the Sentry can provide direct information needed for interdiction, reconnaissance, airlift and close-air support for friendly ground forces. It can also provide information for commanders of air operations to gain and maintain control of the air battle.

e3 usaf awacs

As an air defense system, E-3s can detect, identify and track airborne enemy forces far from the boundaries of the United States or NATO countries. It can direct fighter-interceptor aircraft to these enemy targets. Experience has proven that the E-3 Sentry can respond quickly and effectively to a crisis and support worldwide military deployment operations.

With its mobility as an airborne warning and control system, the Sentry has a greater chance of surviving in warfare than a fixed, ground-based radar system. Among other things, the flight path can quickly be changed according to mission and survival requirements. The E-3 can fly a mission profile for more than 8 hours without refueling. Its range and on-station time can be increased through inflight refueling and the use of an on-board crew rest area.

Background
Engineering, test and evaluation began on the first E-3 Sentry in October 1975. In March 1977 the 552nd Airborne Warning and Control Wing (now 552nd Air Control Wing, TinkerAir Force Base, Okla.), received the first E-3s.

Air Combat Command has 28 E-3s at Tinker. Pacific Air Forces has four E-3 Sentries assigned to the 961st Airborne Air Control Squadron (AACS), Kadena AB, Japan and the 962nd AACS, Elmendorf AFB, Alaska. There is also one test aircraft at the Boeing Aircraft Company.

E-3 AWACS Sentry Aircraft

NATO has acquired 17 E-3A's and support equipment. The first E-3 was delivered to NATOin January 1982. The United Kingdom has seven E-3s, France has four, and Saudi Arabia hasfive. Japan has four AWACS housed on the Boeing 767 airframe.

As proven in operations Desert Storm, Allied Force, Enduring Freedom and Iraqi Freedom, the E-3 Sentry is the premier air battle command and control aircraft in the world. AWACS aircraft and crews were instrumental to the successful completion of operations Northern and Southern Watch, and are still engaged in operations Noble Eagle and Enduring Freedom. They provide radar surveillance and control in addition to providing senior leadership with time-critical information on the actions of enemy forces.
The data collection capability of the E-3 radar and computer subsystems allowed an entire air war to be recorded for the first time in the history of aerial warfare.

In March 1996, the Air Force activated the 513th Air Control Group, an AWACS Reserve Associate Program unit, which performs duties on active-duty aircraft.

Interior View of E-3 Sentry AWACS

During the spring of 1999, the first AWACS aircraft went through the Radar System Improvement Program. RSIP is a joint U.S./NATO development program that involved a major hardward and software intensive modification to the existing radar system. Installation of RSIP enhanced the operational capability of the E-3 radar electronic counter-measures, and improved the system's reliability, maintainability and availability.

General Characteristics
Primary Function: Airborne surveillance, command, control and communications
Builder: Boeing Aerospace Co.
Power Plant: Four Pratt and Whitney TF33-PW-100A turbofan engines
Thrust: 21,000 pounds (9,450 kilograms) each engine
Length: 145 feet, 6 inches (44 meters)
Wingspan: 130 feet, 10 inches (39.7 meters)
Height: 41 feet, 4 inches (12.5 meters)
Rotodome: 30 feet in diameter (9.1 meters), 6 feet thick (1.8 meters), mounted 11 feet (3.33 meters) above fuselage
Speed: Optimum cruise 360 mph (Mach 0.48)
Ceiling: Above 29,000 feet (8,788 meters)
Maximum Takeoff Weight: 347,000 pounds (156,150 kilograms)
Endurance: More than 8 hours (unrefueled)
Unit Cost: $270 million (fiscal 98 constant dollars)
Crew: Flight crew of four plus mission crew of 13-19 specialists (mission crew size varies according to mission)
Date Deployed: March 1977
Inventory: Active force, 33 (1 test); Reserve, 0; Guard, 0


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