Not that easy ! Without all the steps being mentioned, here are a few:
aeronewstv_com wrote:You don't start an airplane like you start a car. On an airliner there is no ignition key. To start the engines, pilots must follow a three-step procedure.
On a Boeing 777 or Airbus A350 type airliner, for example, it all starts with the start of the auxiliary power unit (APU). In the cockpit, the pilots turn the "APU" knob from the "off" position to the "on" position. The APU will then start and provide the pneumatic energy necessary to drive the motors to rotate.
The second step is then to turn the "start / ignition" button from the "norm" position to the "start" position. This action will open a valve and allow the injected air to set the blower in rotation. In fact, the mechanism inside the engine must be in motion, in other words, it must rotate at a certain speed, in order to be able to be supplied with fuel.
Third and final step, fueling the engine. To do this, the captain pushes the "fuel control" lever located below the throttle lever from "cutoff" to "run" (open). From a certain engine compressor speed, the fuel valves open, the compressed air-kerosene mixture ignites, and the engine then operates autonomously.
This is done for each motor, usually one after the other, and takes about a minute.
This automatic starting of the reactors is the most common. During the three stages, the systems and the computers start the engines safely. The pilots, themselves, monitor the smooth running of the operation via a control screen in the cockpit. A ground technician is also in radio contact with the crew when the reactors start up.
And if there is no ignition key to start an airplane, also know that there is also no key to open the doors of an airplane.
Video: >>>
An airline pilot shows us how he starts a Boeing 737. On this video, we can see that he presses a lot of buttons before turning on the engines.
https://www.youtube.com/watch?v=mGp2qX0R4VM
The probability that two reactors fail simultaneously on a twin-engine is <1 / 1'000'000'000 flights!
Just to start, on not far from all the airliners: it is a pneumatic starter with> 25 psi to launch it, or an assu (air start system unit), then a selector in the cockpit on "ignition start "and" a master level "to supply the engine with kerosene.
Source: >>>
... and after all automatic, like on an ULM (well ok I -> [] get out, not push
)For enthusiasts, more details here:
http://airalph.free.fr/b767.htm
Good popularization on how aircraft engines work (and other general explanations):
https://www.youtube.com/watch?v=p2BcLdRwZ54
