Embraer ERJ 145
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The Embraer ERJ 145 is a twin-turbofan, 50 seat regional jet aircraft produced by Embraer of Brazil. It has a range of 2500 km and a cost of ownership of about $2,500,000 per year. It is one of the most popular regional jets in the world with its primary competition coming from the Canadair Regional Jet. Image:Air.france.erj145.750pix.jpg
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History
Image:Embraer.rj145.bristol.750pix.jpg Image:ERJ 145 Cockpit.jpg Image:Air.france.fguma.arp.750pix.jpg
Early Design
The ERJ 145 was originally launched at the Paris Airshow in 1989 as a stretched and turbofan-powered modification of the EMB 120 Brasilia. Key components of this design included:
- straight wing (with winglets)
- wing-mounted engines
- range of 2500 km
- 75% parts commonality with the EMB120.
Interim Design
However by 1990 Embraer was considering a significantly different design which was dramatically different than the EMB 120. The modifications were made after the results of wind-tunnel testing did not satisfy Embraer's engineers. A modified design was proposed which included:
- 22.3 degree swept wing (with winglet)
- wing-mounted engine
- range of 2500km
Production Design
The second design did satisfy engineers in wind tunnel testing but the combination of swept wings and wing-mounted engines required an undercarriage which was significantly higher than the original design. The evolution of the design continued until late 1991 when it was frozen. Though the design went through many alterations before it was finalized, it did retain a few of the original influences of the EMB 120 such as the three abreast seating (2+1) configuration. The key features of the production design included:
- rear mounted engines
- swept wings (no winglets)
- "T"-tail configuration
- range of 2500km
Production and Sales
The first flight of the ERJ 145 was on August 11, 1995 and the first delivery was in December 1996 to ExpressJet (then the regional division of Continental Airlines). ExpressJet, conducting business as Continental Express, is the largest operator of the ERJ 145, with 260 of the nearly 1000 ERJ 145 in service. The second largest operator is American Eagle, with 107 ERJ 145 aircraft. Chautauqua Airlines also operates 61 ERJ 145s through its alliances with American Connection, Delta Connection, US Airways Express and United Express.
In 2003 Embraer entered a partnership with the Harbin Aviation Industry Group of Harbin, China. The resulting company, Harbin Embraer, began producing the ERJ 145 for the Chinese market by assembling kits premanufactured by other worldwide Embraer operations.
Models
Since the original production began in 1995, Embraer has produced a number of design modifications to meet the specifications of their varied customers.
Civilian Models
- ERJ 145 - Baseline model
- ERJ 145ER - Extended range (slightly increased fuel capacity)
- ERJ 145LR - Long Range (increased fuel capacity and upgraded engines)
- ERJ 145XR - Extra Long Range (numerous improvements, including winglets for fuel efficiency, a center fuel tank, higher top speed and more powerful engines)
- ERJ 145EU - Model for European market
Military Models
- C-99A - Transport model
- EMB 145 SA (R-99 model A) - AWACS model
- EMB 145 RS (R-99 model B) - Remote sensing model
- EMB-145MP/ASW - Maritime patrol model
Accident History
The ERJ 145 has an outstanding service record with no reported crashes or fatalities due to mechanical malfunction. There have been a small number of reported incidents involving the ERJ 145. In one case a Rio-Sul pilot descended beyond the normal rates and hit the runway at four times the normal speed. In the other case, a Continental Express (ExpressJet) flight overran a Cleveland runway in blizzard conditions; there were no injuries and the aircraft was returned to service. Another ExpressJet aircraft departed a runway at high speed in Texas during a training flight; that aircraft was a total loss, but again no injuries were sustained.
Image:Bmi.erj145.g-rjxa.arp.jpg
Specifications (ERJ 145ER)
General characteristics
- Crew: 3 (pilot, co-pilot, flight attendant)
- Capacity: 50 passengers
- Length: 29.9 m (98 ft 0 in)
- Wingspan: 20.0 m (65 ft 9 in)
- Height: 6.8 m (22 ft 2 in)
- Wing area: 51.2 m² (551 ft²)
- Empty: 11,667 kg (25,722 lb)
- Maximum takeoff: 20,600 kg (45,415 lb)
- Powerplant: 2× Rolls-Royce AE 3007A turbofans, 33.0 kN (7,420 lbs) thrust each
Performance
- Maximum speed: 834 km/h (518 mph, Mach 0.8)
- Range: 2,963 km (1,841 miles)
- Service ceiling: 11,278 m (37,000 ft)
- Rate of climb: 780 m/min (2,560 ft/min)
- Thrust-to-weight: 0.58:1
References
- ERJ 145 information at Airliners.net
- Information on Harbin Embraer
- EMB-121 Press Release for Rio-Sul Crash
- Endres, Gunter and Gething, Mike. (2002). Aircraft Recognition Guide, (2nd Ed.). New York: Harper Collins Publishers. ISBN 0007137214
See also
Related development:
Comparable aircraft:
Designation sequence: ERJ-135 ERJ-140 ERJ-145 ERJ-170 ERJ-175 ERJ-190 ERJ-195
External links
- EMBRAER ERJ 145 Technical data concerning the EMBRAER ERJ 145, and main source for this article
- EMBRAER Official Site
- Technical data for the Embraer ERJ 145 - on the official Embraer site
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