Of the mentioned civilian helicopters worldwide, the vast majority are produced by the three major original equipment manufacturers, namely, Company, Company and AgustaWestland, while 17% are produced by other original equipment manufacturers.
So?
The Agusta A109A109 is characterized by streamlined, beautiful appearance, fast speed and high altitude performance.
At present, the domestic public security system has certain users.
The overall layout is 4 blade full hinged rotors.
Two blade semi-rigid triangular hinged tail rotor.
The rotor blades can be folded manually.
Retractable front three-point landing gear.
Power plant 2 Allison 250?
The C20B turboshaft engine has a takeoff power of 313 kW (426 HP) and a maximum continuous power of 298 kW (405 HP).
The Bell 407 model is aimed primarily at the air enforcement and homeland security markets.
The flexibility of the Bell 407AH is excellent, allowing it to perform a variety of quasi-public missions, which is also very rare in its class.
The Bell-407 is powered by the HTS-900 new turboshaft engine with a power of 680 kW and the total engine weight increased to 2.56 tons.
The fuel is contained in two interconnected crash-resistant soft tanks, which, with the addition of the auxiliary tank, can carry more fuel than the oh-58d.
It uses a LOW-NOISE cruise system, and THE full power DIGITAL engine control system is used to reduce the rotor speed to 90%~93% of the cruise speed, so as to reduce the through-field noise of arh.
Bell Helicopter Company is determined to develop the new Bell 429 helicopter, which will be infused with advanced technology to improve performance and versatility while reducing direct cost of use.
According to Stromberg, executive manager of the company’s civil program management, the Bell 429 was developed to meet the market demand for a new, more capable aircraft than the Bell 427.
Since the Bell 427 entered service in 1989, the main shortcomings reflected are: performance limitations, the cabin is too small to limit the versatility of the aircraft.
To this end, the company decided to accelerate the development of advanced technologies for the new helicopter family, the Modular Affordable Product Family (MAPL), and apply them to the Bell 429.
