Almost all modern large jet airplanes use engines in pods located a significant distance from the wing root for substantial wing bending relief. The pods are in front of the wing to help avoid flutter of the wing which, in turn, allows a much lighter wing structure.
It also allows for easier access and maintenance but exposes them to more risk of foreign object damage. The engines are usually mounted slightly forward of the wing to help prevent flutter of the wing (this also allows the overall wing structure to be made lighter).
Wing-mounted engines reduce wing bending moments: When the engines are attached to the wings, they weigh down the structure, which helps to reduce the bending loads on the wing due to the changes in lift force. This means that the wing does not have to be that strong, reducing weight and complexity.
Improved Aerodynamics
The HondaJet's engines are placed in such a way that the airflow over the wing is combined with that around the engines, reducing air resistance at high speeds (wave drag), and letting the HondaJet fly faster than similar sized aircraft.
Noise: By putting the engines at the back of the aircraft, a lot of the engine noise is eliminated. As a private jet isn't jammed with 400 passengers and the occupants are likely to want to work, quiet is good.
This would prevent the engines from hitting the ground, even if they were larger than previous models. Subsequently, the engines on future 737s were flattened along the bottom. This allowed them to contain a larger fan and turbine without compromising on ground clearance.
A: Screens to prevent birds from getting sucked into aircraft engines have been considered in the past and rejected for several reasons. The screen would have to be very sturdy and possibly very heavy. Airplanes typically are traveling about 170 mph at takeoff.
Wingtips enable more cost-efficient flights
Wingtips reduce vortex drag caused by the convergence of high-pressure and low-pressure air at the tip of its wings. As vortices form at the wing's edge, they create a drag force that significantly slows the aircraft down.
A lift jet is a jet engine angled to provide an aircraft with aerostatic (i.e. not requiring the movement of air over an airfoil) lift, instead of (or in addition to) thrust.
Description. A Dutch roll is a combination of rolling and yawing oscillations that occurs when the dihedral effects of an aircraft are more powerful than the directional stability. A Dutch roll is usually dynamically stable but it is an objectionable characteristic in an airplane because of its oscillatory nature.
Low-wing aircraft can withstand greater forces through the landing gear and wing structure. They are also considered safer in the event of an emergency landing or water landing. The low wing position will keep the fuselage above any potential impact or water and allow for an easier emergency exit.
Check out the typical commercial jetliner. It has main engines on either side to generate thrust. But there's another engine hidden int he back of the tail. Called the auxiliary power unit (APU) It's the smallest engine on a plane.
Before Auxiliary Power Units (APUs) existed, you had start a main engine to get electrical power (without draining the battery) and air conditioning. Since the passengers were boarding on the left side, you had to start a right engine first.
Getting back to why that piece is unpainted, it's simply that metal is a good heat conductor and paint would hinder that, making the anti-icing process less effective.
The propeller in most single-engine airplanes rotates clockwise. This clockwise movement generates an equal force in the opposite direction. This causes the aircraft to move left during flight. On the ground, the left-turning tendency generated by torque increases friction on the left side of the landing gear.
The design of the wings is such that they are symmetric and equally rounded at the top and bottom. Symmetric wings generate an equal amount of lift in the inverted position without losing speed or altitude. Notably, the symmetric wing configuration is entirely different than how commercial wings are designed.
If a passenger jet flies too high, it reaches a point called 'Coffin Corner'. This is the point at which the aircraft's low speed stall and high-speed buffet meet and the plane can no longer maintain its altitude which forces it to descend.
The biggest reason for flying at higher altitudes lies in fuel efficiency. The thin air creates less drag on the aircraft, which means the plane can use less fuel in order to maintain speed. Less wind resistance, more power, less effort, so to speak.
As for the loss of the engines, all airplanes can glide to a landing. Do you see a continued future for the Boeing 747 as a freight carrier? Yes, the 747 will continue to fly as a freighter for many years to come.
When it comes to safety, jets and turboprops are essentially equivalent. Both types of aircraft are powered by turbine engines, making them virtually identical in terms of safety. In general, turbine engines are mechanically simple, light, reliable, and easy to operate.
A Bird Strike Can Bring Down A Fighter Jet
Because birds frequently fly at lower altitudes, the chance of sustaining a bird strike is greatest during takeoff, initial ascent approach, and landing. Even though class A incidents are uncommon, bird strikes have the potential to damage aircraft significantly.
Thrust reverser systems are featured on many jet aircraft to help slow down just after touch-down, reducing wear on the brakes and enabling shorter landing distances. Such devices affect the aircraft significantly and are considered important for safe operations by airlines.
For a rocket, the accelerated gas, or working fluid, is the hot exhaust; the surrounding atmosphere is not used. That's why a rocket will work in space, where there is no surrounding air, and a jet engine or propeller will not work. Jets and propellers rely on the atmosphere to provide the working fluid.
Aircraft engines
Commercial aircraft descend with a minimum thrust, that is, the engines are operating at idle speed. This situation happens when an aircraft is gliding and during the landing flare, for approach the engines are usually not operated at idle power.