The electrical power requirements of the Boeing E-3 Sentry are far greater than a normal aircraft (approximatly one Mega-Watt) and in consequence all four engines are fitted with alternators rather than just the usual one or two. Boeing E-3 Sentry (US and Nato) Specifications: - Crew: Flight crew: 4
- Mission crew: 13-19
- Length: 152 ft 11 in (46.61 m)
- Wingspan: 145 ft 9 in (44.42 m)
- Height: 41 ft 4 in (12.6 m)
- Empty weight: 185,000 lb (73,480 kg)
- Loaded weight: 344,000 lb (with in-flight refuelling) (156,400 kg)
- Max takeoff weight: 325,000 lb (take off restricted weight) (147,000 kg)
- Engines: Four 21,500 lbf (93 kN) Pratt and Whitney TF33-PW-100A turbofans
- Maximum speed: 530 mph (855 km/h, 461 knots)
- Range: 4,000 NM (7,400 km)
- Service ceiling: 41,000 ft (12,500 m)
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