Whereas the engines of most conventional business jets are located in the rear of the fuselage, the HondaJet has an over-the-wing engine mount configuration. Through experimentation and extensive testing, Honda developed a unique over-the-wing design that optimizes engine position and shape for a significant improvement in aerodynamic performance. This layout means the rear of the fuselage no longer has to be designed to house and support the engine as in conventional business jets, which allows internal space to be maximized and makes the HondaJet's spacious cabin and baggage compartments possible.
The HondaJet's over-the-wing engine mount configuration reduces drag (shock waves) which occurs when flying at high speeds. This allows faster flight speeds than other aircraft of its class, as well as greater fuel efficiency.
[Wing shockwave simulation image]
Laminar flow refers to the smooth air flow on the boundary layer of areas such as an aircraft's wings. Laminar flow significantly reduces wind drag compared to a turbulent airflow. Honda's uniquely developed natural laminar flow wing and nose design allows air to flow naturally across the boundary layer, creating a large laminar flow even at high speeds. This design contributes to the HondaJet's outstanding flight speed and fuel efficiency.
[Areas in which natural laminar flow is applied]
Laminar flow is prone to disturbance by even the smallest ridges in the external panels and rivets. The HondaJet's design optimizes the number and position of rivets and employs a skin (external panel) of integrally machined aluminum for the main wings to reduce surface irregularities to an absolute minimum. These innovations led to the creation of a natural laminar flow wing and nose that are effective even at high speeds.
[Infrared capture of laminar flow area]
The HondaJet's fuselage employs a carbon composite for a strong, lightweight structure. For assembly of the fuselage, Honda developed integral molding technology in which two types of panel—honeycomb sandwich panels and stiffened panels—are combined to create the aircraft body. The fuselage's carbon composite material and integral molding technology not only contribute to weight reduction, but also give the HondaJet its sleek external design.
[Integrally molded composite fuselage]
[2 types of panel combined in layout that gives optimum performance]
The HondaJet features new HF120 turbofan engines manufactured by GE Honda Aero Engines which boast high thrust that belies their lightweight, compact design. The HF120 engines also reduce environmental impact, with low emissions equivalent to or even lower than Committee on Aviation Environmental Protection (CAEP) standards. They are also extremely quiet, meeting CFR 36 Stage 4 noise standards.
[Image of HF120 engine size]
The HF120 features Full Authority Digital Electronic Control (FADEC), helping achieve high efficiency and reliability.
[Perspective drawing of internal structure]
Employing an over-the-wing engine mount configuration frees up cabin space―evident in the spacious passenger seats and an aft baggage compartment, which has enough space to store 6 large golf bags. But the HondaJet does not only focus on space―close attention has been paid to each design feature and structural detail to create a stylish and comfortable interior.
For instance, the seat design and panel layout were developed from an ergonomic perspective by observing pilot and passenger movements from every possible aspect. Features such as the lavatory area, which is partitioned for privacy, and the steering and braking systems, which give superior comfort when taxiing, are other examples of the new value offered by HondaJet.
The cockpit is both functional and stylish, coming equipped with a Honda-customized Garmin ® G3000 next-generation all-glass avionics system, and featuring fresh, original styling.