空中預警管制機(AEW＆C)(或以歷史上或更常見的稱號AWAC)是一種機載雷達系統，藉由飛行高度，可提供比地面或海上雷達較佳的預警與搜索效果，延長容許我方部隊反應的時間與彈性。可用於大範圍控制和指揮的己方戰鬥空間中的戰鬥機或飛彈等武器在敵機進入地面或艦隊雷達無法偵測範圍前提前進行攔截或攻擊的任務。AEW＆C / AWAC單位也可用於進行偵查，包含對地面目標和經常執行C2BM(指揮和控制，作戰管理)功能有點類似機場交通管制只是所指揮的是軍事部隊。機上的雷達可用於高海拔，可以區分幾百英里內友方和敵對的飛機。
AWAC
/
AEW＆C飛機可用於防禦和進攻性空中作戰，是北約和美國空軍部隊訓練或整合空軍與一艘海軍軍艦指揮信息中心而成，是一個具高機動性且強大的雷達平台。該系統是用於直接引導戰鬥機到他們的進攻目標位置，並可在用於防守中反擊空中和地面敵軍部隊。由於本系統是如此有用，美國海軍也在超級航艦上搭載AWAC飛機，以加強和保護其航艦指揮信息中心(CICS)，AEW＆C在早期也被稱為“空中預警”(AEW)和“空中預警和控制系統”(AWACS)。
由於空中預警機可以加大陸面與海軍艦隊雷達的預警範圍，因此可將其是為空中之眼或艦隊雙眼。
空中預警機通常以民航機或者是運輸機改裝而來，因為此類飛機的內部可使用空間大，能夠安裝大量電子與維持運作的電力與冷卻設備，同時也有足夠空間容納數位雷達操作人員，此類飛機通常配備於空軍。也有國家以直昇機作為載具，不過這一類的小型空中預警機由於受到搭配的裝備較少的影響，效能不如以中大型飛機機體改裝而來的機種，但也由於機體較小且可垂直起降，多數國家海軍多使用直昇機作為早期預警用。由於受到軍艦空間的限制，除美國E-2空中預警機外(目前僅有美國跟法國的航艦有搭載此種預警機，未來或許俄羅斯印度或中國或巴西的CATOBAR航艦也會搭載自己設計或者外購的大型早期預警機)，預警直升機則多用於海軍艦隊的早期預警，是目前大多數有航艦的國家用來作為航艦戰鬥群早期預警的方式。
主要功能
索敵
情報整理分析
敵方與非敵方目標的威脅度判斷與優先度判斷
情報共享
鄰近友軍航空機與地上以及海上部隊的資訊共享
攻撃與包含攻擊時的指揮管制
Northrop
Grumman E-2 Hawkeye
開發歷程:
W2F-1
Original designation of the Hawkeye, changed to E-2A in 1962.
E-2A
Initial production version, was W2F-1 before 1962. 59 built.
TE-2A
Two E-2As converted as crew trainers.
YC-2A
Two E-2As, BUNOs 148147 and 148148, converted as prototypes of the C-2 Greyhound
E-2B
As E-2A but fitted with improved computing, enlarged outer fins. 52 converted from E-2A.
YE-2C
Two E-2As, BUNOs 148712 and 148713, converted as E-2C prototypes. Designated as YE-2C and NE-2C respectively. These airframes then finished out their useful life being used as TE-2C pilot trainers.
E-2C
As the E-2B but with all new electronics, surveillance radar and search radar, 63 built. In "plus-models" the E-2C also has upgraded turboprop engines.
E-2C Group 0
Initial production version of E-2C, fitted with AN/APS-120 or AN/APS-125 radar. Lengthened nose compared to earlier versions.
E-2C Group I
New radar (AN/APS-139), plus ungraded mission computer and upgraded engines. 18 new build aircraft.
E-2C Group 2
AN/APS-145 radar, further improved electronics.
E-2C Hawkeye 2000
New mission computer, Cooperative Engagement Capability (CEC and additional satellite communications aerial. Originally designated Group 2+.
E-2D
Currently undergoing flight testing and Initial Operational Test and Evaluation. This version will feature an entirely new avionics suite, improved engines, a new "glass cockpit" and the potential for air-to-air refueling.
E-2T
E-2C variant for Republic of China (Taiwan), with parts taken from retired E-2Bs (USN BuNos 151709, 151710, 151724, 152479) in order to please objections from the People's Republic of China and to make it appear as a sale of four rebuilt E-2As or E-2Bs. However, these aircraft have the same level of electronics as the E-2C Group II Hawkeyes with their APS-145 radars.
服役國家:
埃及
E-2 Hawkeye 2000 x6
法國海軍
E-2C Hawkeye 2000 x3 並可能計劃添購第4架
以色列
E2-C Hawkeyes x 4 (3架賣給墨西哥，1架保留於博物館))
日本航空自衛隊
E-2C Hawkeyes x13
墨西哥海軍
E-2C x3
新加坡空軍
E-2C x4
台灣
E-2T x4 & E-2K x2. The four E-2Ts had been approved to be upgraded to Hawkeye 2000 configuration.
W2F-1
Original designation of the Hawkeye, changed to E-2A in 1962.
E-2A
Initial production version, was W2F-1 before 1962. 59 built.
TE-2A
Two E-2As converted as crew trainers.
YC-2A
Two E-2As, BUNOs 148147 and 148148, converted as prototypes of the C-2 Greyhound
E-2B
As E-2A but fitted with improved computing, enlarged outer fins. 52 converted from E-2A.
YE-2C
Two E-2As, BUNOs 148712 and 148713, converted as E-2C prototypes. Designated as YE-2C and NE-2C respectively. These airframes then finished out their useful life being used as TE-2C pilot trainers.
E-2C
As the E-2B but with all new electronics, surveillance radar and search radar, 63 built. In "plus-models" the E-2C also has upgraded turboprop engines.
E-2C Group 0
Initial production version of E-2C, fitted with AN/APS-120 or AN/APS-125 radar. Lengthened nose compared to earlier versions.
E-2C Group I
New radar (AN/APS-139), plus ungraded mission computer and upgraded engines. 18 new build aircraft.
E-2C Group 2
AN/APS-145 radar, further improved electronics.
E-2C Hawkeye 2000
New mission computer, Cooperative Engagement Capability (CEC and additional satellite communications aerial. Originally designated Group 2+.
E-2D
Currently undergoing flight testing and Initial Operational Test and Evaluation. This version will feature an entirely new avionics suite, improved engines, a new "glass cockpit" and the potential for air-to-air refueling.
E-2T
E-2C variant for Republic of China (Taiwan), with parts taken from retired E-2Bs (USN BuNos 151709, 151710, 151724, 152479) in order to please objections from the People's Republic of China and to make it appear as a sale of four rebuilt E-2As or E-2Bs. However, these aircraft have the same level of electronics as the E-2C Group II Hawkeyes with their APS-145 radars.
服役國家:
埃及
E-2 Hawkeye 2000 x6
法國海軍
E-2C Hawkeye 2000 x3 並可能計劃添購第4架
以色列
E2-C Hawkeyes x 4 (3架賣給墨西哥，1架保留於博物館))
日本航空自衛隊
E-2C Hawkeyes x13
墨西哥海軍
E-2C x3
新加坡空軍
E-2C x4
台灣
E-2T x4 & E-2K x2. The four E-2Ts had been approved to be upgraded to Hawkeye 2000 configuration.
美國海軍與海岸防衛隊
E-2C & E-2D x 68
Boeing 737 AEW&C
E-2C & E-2D x 68
Boeing 737 AEW&C
服役國家:
澳洲空軍x6
韓國空軍x4，考慮額外增購2~3架土耳其空軍x4
Boeing E-3 Sentry
開發歷程:
EC-137D
Two prototype AWACS aircraft with JT3D engines, one fitted with a Westinghouse Electric radar and the other with a Hughes Aircraft Company radar. Both converted to E-3A standard with TF33 engines.
E-3A
Production aircraft with TF33 engines and AN/APY-1 radar, 24 built for USAF later converted to E-3B standard, total of 34 ordered but the last 9 completed as E-3C. One additional aircraft retained by Boeing for testing, 18 built for NATO with TF33 engines and five for Saudi Arabia with CFM56 engines.
KE-3A
These are not AWACS aircraft but CFM56 powered tankers based on the E-3 design. Eight were sold to Saudi Arabia.
E-3B
E-3As with improvements, 24 conversions.
E-3C
Production aircraft with AN/APY-2 radar, additional electronic consoles and system improvements, ten built.
JE-3C
One E-3A aircraft used by Boeing for trials later redesignated E-3C.
E-3D
Production aircraft for the Royal Air Force to E-3C standard with CFM56 engines and British modifications designated Sentry AEW.1, seven built.
E-3F
Production aircraft for the French Air Force to E-3C standard with CFM56 engines and French modifications, four built.
E-3G
USAF Block 40/45 modification.服役國家:北約組織 E-3A x17法國空軍 E-3F x4沙烏地阿拉伯空軍 E-3A x5及KE-3A x8英國空軍 E-3D x7美國空軍 E-3A x23及E-3B x8
E-8 Joint
STARS
衍生型
E-8A
Original
platform configuration.
TE-8A
Single
aircraft with mission equipment removed, used for flight crew
training.
YE-8B
Single
aircraft, was to be a U.S. Navy E-6 but transferred to the U.S. Air
Force as a development aircraft before it was decided to convert
second-hand Boeing 707s (1 from a Boeing CC-137) for the JSTARS role.
E-8C
Production
Joint Stars platform configuration converted from second-hand Boeing
707s (1 from a CC-137).
服役國家:
美國空軍
E-8Cx16
Boeing
E-767
服役國家：
Japan
Air Self-Defense Force
4xE-767
Sikorsky SH-3H AEW
服役國家：
Spanish
Navy
SH-3Hx3
俄羅斯
A-50 (Mainstay)
衍生型
A-50M– Modernized Russian Version fitted with midair refueling capability.
A-50U– updated Russian variant
Izdeliye-676– One-off stop-gap telemetry and tracking aircraft.
Izdeliye-776– One-off stop-gap telemetry and tracking aircraft.
Izdeliye-976 (SKIP)– (СКИП – Самолетный Контрольно-Измерительный Пункт, Airborne Check-Measure-and-Control Center) – Il-76 based Range Control and Missile tracking platform. Initially built to support Raduga Kh-55 cruise missile tests. Has fixed radar cover filled with other equipment and glassed navigator cockpit, (one prototype and five production conversions).
Izdeliye-1076– One-off special mission aircraft with unknown duties.
A-50I– variant with Israeli radar, designed for China but project cancelled under pressure of United States
A-50E/I– With Aviadvigatel PS-90 A-76 engines, with Israeli EL/W-2090 radar made for the Indian Air Force
A-50M– Modernized Russian Version fitted with midair refueling capability.
A-50U– updated Russian variant
Izdeliye-676– One-off stop-gap telemetry and tracking aircraft.
Izdeliye-776– One-off stop-gap telemetry and tracking aircraft.
Izdeliye-976 (SKIP)– (СКИП – Самолетный Контрольно-Измерительный Пункт, Airborne Check-Measure-and-Control Center) – Il-76 based Range Control and Missile tracking platform. Initially built to support Raduga Kh-55 cruise missile tests. Has fixed radar cover filled with other equipment and glassed navigator cockpit, (one prototype and five production conversions).
Izdeliye-1076– One-off special mission aircraft with unknown duties.
A-50I– variant with Israeli radar, designed for China but project cancelled under pressure of United States
A-50E/I– With Aviadvigatel PS-90 A-76 engines, with Israeli EL/W-2090 radar made for the Indian Air Force
服役國家：
Russian Air Force– 22 А-50М in service+ 4 A-50U
Indian Air Forcet Air Force
3 A-50E/I operational, RFP for 2 more sent to IAI for the EL/W-2090 AEW&C radar system to be mounted on the A-50.
Russian Air Force– 22 А-50М in service+ 4 A-50U
Indian Air Forcet Air Force
3 A-50E/I operational, RFP for 2 more sent to IAI for the EL/W-2090 AEW&C radar system to be mounted on the A-50.
Kamov
Ka-31
服役國家:
Indian
Navy
Ka-31
Helix Bx14
英國
BAe HS-748
BAe HS-748
Westland
Sea King AEW.2 / AEW5 / ASaC7
以色列
Phalcon707
Phalcon707
G550
CAEW
A-50EI
瑞典
Saab 340 AEW&C (S 100 B/D Argus)
Saab 340 AEW&C (S 100 B/D Argus)
Saab
2000 AEW&C
巴西
Embraer R-99A Erieye
Embraer R-99A Erieye
中國
空警-1
空警-1
空警-200
空警-500
空警-2000
直-8
印度
DRDO
AEW&CS
英國與義大利
AgustaWestland EH101
AgustaWestland EH101
服役國家:
Italian
Navy
EH101Ax4
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