Bell 427 Helicopter Review, Top Speed, Unit Cost, Manufacturer – The Bell 427 was a lightweight twin-engine utility helicopter, but it failed to attract interest from the network market and the series eventually ended with a move to the more promising Bell 429.
Bell 427 Helicopter Review, Top Speed, Unit Cost, Manufacturer
|Type||Bell Model 427|
|Unit Cost||$ 4.7 million|
|Year of Development||2000|
|Engine||It is powered by two Pratt & Whitney Canada PW207D turboshaft engines (710 hp each), driving a four-bladed main rotor and a two-bladed tail rotor|
|Top Speed||161 mph (259 km/h)|
MilitaryEzyInfo.com – The Bell 427 was Bell Helicopter’s unsuccessful attempt to introduce a new, smaller twin-engine platform for the civilian market based on the success of the Bell 206/407 single-engine aircraft (competing with the Agusta AW109, Airbus Helicopters EC145, and HAL Dhruv).
When was the Bell 427 launched?
The 427 was powered by twin engines but had the same four-bladed configuration for the main and tail rotors.
First flown on December 11, 1997, and launched in 2000, the production saw was produced in 1997 and 2010 before the company dropped the model from its product line to support the Model 429 (see the rest of this site for details). Only Argentina and the Czech Republic operated the Model 427 for a short time.
The Model 427 was another attempt by Bell to attract market interest to its successful Model 206/407 series of twin-engine aircraft.
The work, which began in the mid-1990s with Samsung Aerospace Industries in Korea, was primarily computer-aided design (CAD) to keep costs down. The prototype first flew on December 11, 1997, and was certified in 1999-2000.
Like the 206/407, Type 427 has the crew arranged in a frontal line, with a large transparent panel providing a clear view of the cockpit.
Helicopter and Cockpit Design
The exterior features car-shaped hinged doors along the sides of the fuselage, with larger doors that fold down into the passenger compartment area. It can carry up to seven passengers. The cockpit is equipped with the latest features, combining two large interactive displays with steam instruments.
The silhouette is aesthetically pleasing, and even the position of the engine matches the design, showing that it is a smart product.
The tail boom is raised and fixed outside the horizontal and vertical planes, and the main vertical stabilizer is displayed behind the fuselage. There is also a driveshaft in the trunk to drive the twin-blade tail rotor (left side).
Above the passenger compartment are the two engines that drive the four-bladed main rotor. The wheels are of composite construction and the main rotor is rigid.
Bell 427 Helicopter Engines and Speed
The engine is a full FADEC (Full Resolution Digital Engine Control) design and is powered by two turboshaft type Pratt & Whitney Canada PW207D (710 hp each).
In terms of performance, it has a maximum speed of 160 mph, a cruise speed of 160 mph, a maximum range of 395 miles, and a service altitude of 10,000 feet. The ascent speed is up to 2,000 feet per minute.
Dimensions are 37.5 feet long, 37 feet wide (including the main rotor), and 10.5 feet high. It has an empty weight of 3,880 pounds compared to the MTOW’s 6,550 pounds.
Production of the Bell 427 model was discontinued in 2008
In 2004, the 427i was proposed with input from Korea and Japan. However, this model was replaced by the more future-proof 429 models.
In 2008, Bell Helicopter officially ended the production of the 427 models, but with only two foreign customers (the police in Argentina and a private operator in the Czech Republic).
Iran’s new PANHA Saba-248 helicopter is believed to be based on the short-lived Bell Model 427. More information about this helicopter can be found elsewhere on this site.