sam0001

Hi Guys
Thought this might be an intresting discussion. Lets compare E3-Sentry with Phalcon. All inputs welcome.

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bigross86

Specifications
Primary Function Airborne surveillance, command, control and communications
Contractors Prime: Boeing Aerospace Co.
Radar: Northrop Grumman
Power Plant Four Pratt and Whitney TF33-PW-100A turbofan engines
Thrust 21,000 pounds 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 Approximately $270 million
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; Reserve, 0; Guard, 0
Losses An E-3 crashed 22 Sep 1995 in Alaska, reducing the US fleet by one.

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bigross86

Specifications
Country of Origin Israel
Builder IAI
Role
Similar Aircraft
Wing Span 44.60 m
Wing Area 283.40 m²
Length 44.40 m
Height 12.90 m
Weight
Engine 4 x P&W JT3D-3B
Maximum speed 973 Km/h
Cruising speed
Range 6,920 Km

naocman

Anyone have specs on the radars used by the two aircraft?

Btw, wasn't the E-3 crash caused by a bird ingestion...in 3 of the engines if IIRC...I think they ran into a flock of snow geese.

sam0001

Thats what I am looking at. because I dont think it really matters on what aircraft it is kept on. Boeing or IL76, they are both reliable.

I think Phalcon is a little advanced as it used Phased array radsrs compared the E3-Sentry. The problem with sentry is its like a radar that scans the orbit in a circular fashion. Where as phased array scans the whole surface simultaneously. Its more like a digital and analog signal comparison thing.

This is to the best of my knowledge. Any inputs????

Anon

We'd have to compare the radars, and all the important things we'd have to compare are all classified.

So it's pretty hard to say.

The E-3 does have a much larger crew, so it probably does hold some advantadge in managing a large air battle, but even that's just a guess.

sam0001

Thats true. Most of it is classified. I think the concepts are not classified. Like type of radars etc.

I found lot of pics of E3 here.

http://www.nme.de/cgi-shl/NME/viewcat.cfm?cat=21

Depending upon flight altitude hundreds of air can - with the rotary Westinghouse radar An/apy-1 in the Rotodom over the trunk, See-und ground targets to approximately 400 km distance to be supervised and pursued. Will conveyed the data at command centers at the soil, but can interceptors also from board be led.

bigross86

Yeah, but what's in the bulge in the massive nose cone?

sam0001

Thats the phased array radar.

Here is how phalcon is superior to E3.

The AWE&C phased array radar replaces the conventional rotodome radar. It is mounted either on the aircraft fuselage or on top of the aircraft inside a stationary dome, providing full 360° coverage. This electronically steered beam radar delivers a tremendous advantage over mechanical rotating antenna, as it supports the tracking a high maneuvering targets. The radar can detect even low flying objects from distances of hundreds of kilometers, day and night, under all weather conditions. Verification beams sent at specific, individual, newly detected targets eliminate false alarms. Moreover, track initiation is achieved in 2 to 4 seconds as compared to 20 to 40 seconds with a rotodome radar


http://www.fas.org/man/dod-101/sys/ac/row/phalcon.htm