Prática de Shadowing: Aircraft General Knowledge | PPL Expert Online Ground School FREE Sample - Aprenda a falar inglês com vídeo

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Welcome to PPExpert, my name is Tom and I'll be presenting the Aircraft General Knowledge course.

This course is designed to give you an in -depth understanding

on the theory required to pass the CAA theory exam for this particular topic.

Despite this, own self -study, commitment, and discipline will be required.

The course is displayed in the form of a slideshow which I'll be talking through.

Please feel free to pause the recording at any point to either take a break

or write down any notes

so now we're going to look at the contents of what we're going to cover in the subject

so we're going to cover the airframe of the aircraft the aircraft engine itself

and its components the carburetor aircraft systems so how they will work

and instrumentation okay and all these will be covered in more detail

which is applicable to the PPL syllabus for the exams

so the major components of an aeroplane are the fuselage

which is the main body where the passengers sit the wings

which create the lift tail assembly which is the horizontal

and the vertical stabilizer flight controls so how we maneuver the aircraft the landing gear

which absorbs the weight of the aircraft and the engine

and the propeller okay

so we're gonna go through all of these in more detail

first of all though we're going to look at the fuselage

so the main body of the aircraft and it is the main structure to

which all other components are attached okay

so all the other all the other components are attached to

the fuselage the fuselage is the main the main part of it now different aircraft have different construction techniques

but most light aircraft are of a semi monocop construction

and we'll go through what that means next

so first of all what is a monocoque construction

and a monocoque construction is when the skin of

that structure is the entire weight bearing structure

so the skin has all the strength in it to hold

a shape the way it is okay there are formers inside used to keep the shape

but they aren't structural bearing it's the skin itself that holds the weight of the aircraft

and its strength effectively so an example of this maybe could be something like an egg

if you were to hold an egg

and squeeze it really hard it's probably unlikely to break

but once that shell cracks then the structural integrity of the egg is broken

and that's similar to a monocoque construction where the skin holds all the rigidity and strength within the structure.

Then we have a semi -monocoque construction.

The way this works is there's a lightweight framework inside which

that supports the skin and it's the combination of the framework and the skin itself which will give the structure strength.

So it's a combination between formers and skin

that improves the strength of any structure if the skin is damaged that means

that not necessarily the whole structure will be compromised in strength

as it's got sort of almost two layers of protectivity

and most aircraft use make use of this technique as it offers the most redundancy

if anything were to get damaged so next we're going look at the wings

so the wings itself are the component that create lift

and they're exposed to very heavy loads

and those loads are well in excess of the aircraft's weight

itself the main structure of the wing is a central spa

which is where all the strength within the wing lies okay

and it can carries the loads vertically upwards and downwards

and then from the spa there's also ribs

which often stiffen the skin of the wing itself

and they help transfer some of the load

so it just increases the structural integrity of the aircraft

so here's a diagram of a wing construction

so you've got the skin itself which offers some strength you've got the main spar

which is the most load -bearing part and then the ribs itself

which offers some strength in a perpendicular direction okay

and all of these together is what increases the strength within the aircraft

So different aircraft have different wing designs and it's by and large to their purpose.

So you can see that some aircraft have a lower wing, some aircraft have a higher wing or some aircraft have a biplane design, so dual wings.

They all perform the same purpose

and it will have very slight characteristic differences between the handling of these aircraft but by

and large they all perform exactly the same in terms of

creating lift it's just a different way of constructing an aircraft

so next we can look at the tail

or otherwise known as the empennage

and it consists of two elements okay we've got horizontal stabilizer

and a vertical stabilizer okay

and most conventional is the horizontal stabilizer lower down with a vertical stabilizer going up

and it's better because it's easily accessible for checking on the ground

but it's more susceptible from turbulence from the wings there are also t tail designs where the horizontal stabilizer is higher up

and that means it's clear of that turbulence so it's slightly smoother to control

however it's inaccessible on the ground it's harder to check for damage on the pre -flights

and also a high detail design is susceptible to a steep stall

which is talked about in principles of flight

so just um some housekeeping about securing an aircraft

so we want to secure the aircraft facing into the wind

if possible we should tie it down as well if we can

so tight to the floor to make sure it's not gonna move around want to lock the control services

and that's a lock within the aircraft

which means the control services aren't free to move around covering

the pitot tube with a cover as well as in all engine openings

and we'll talk about some of these elements later on in AGK and

if you need out just refer to the pilots handbook where

it will give the best way to do all of these things

so next we're going to look at cabin ventilation

so how the cockpit of the aircraft gets ventilated with warm

and cooler air so for cooler air there's normally a vent

which just opens up to the outside where fresh air flow

can flow into the cockpits providing the cooler air from the

outside inside the cabin warmer however it's obviously much hotter to come by

and it's taken from around the engine so there's a shroud around the exhaust

and that air is heated by the exhaust which is then pumped into the cabin as hot air.

We just need to be careful that because it's taken from around the exhaust

if there was any pipes damaged in regards to the exhaust then

that exhaust gas could leak into the air ventilation system

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and therefore cause carbon monoxide poisoning which can be deadly

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if exposed to and that's why we have carbon monoxide poisoners

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which we'll look at next so it's just being aware

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that all the hot air is coming from around the engine

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and the gases associated with that

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so as I said carbon monoxide poisoning could be present

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if there's a leak in the exhaust system and therefore the ventilation

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so we just need to be aware of it it's we talk more about it in human performance

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and limitations but some of the symptoms could be a headache, dizziness, nausea, a deterioration of vision,

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slow breathing, unconsciousness and eventually if we don't do anything about it death.

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Okay so we do need to be aware of it

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if we'd start experiencing some of these symptoms we want to open the cabin air vents

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and let that fresh air from the outside come in

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so we're not exposed to much of that hotter air which could possibly have carbon monoxide poisoning in it.

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We also have detectors in the aircraft in two forms one is a alarm just like a fire alarm

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and also we have this one as well

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which is a yellow orange circle and once carbon monoxide has been detected

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that orange circle will start to get some black dots on it

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so now we're going to look at an aircraft engine okay

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and more specific to the kind of engines that we will be using

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which are piston engines

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so we'll we'll actually be using the aircraft we fly there's lots of different types of piston engine aircrafts

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so different the way they're built and their purposes However, most engines in general aviation are horizontally opposed,

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and we'll look at that later on.

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Normally engines for aviation are specifically designed.

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They have higher tolerances, they're generally stronger,

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lighter to save weight, and they have more reliability let's see.

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So the first engine we're going to look at is a radial engine.

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And the cylinders in the radial engine are arranged around a central crankshaft.

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So they're all the way around a central point.

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They're quite large in diameter.

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And what this does is it allows for a high number of cylinders in a small space okay

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so they've got high power to size generally they're quite complex and they're quite prone to malfunction they're generally found on

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older aircraft they're not yet used too much nowadays

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but they do up a lot of power

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which is why they were used some years ago the next kind of engine is a straight four

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so instead of being horizontally opposed it's vertically opposed it's very

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simple design it's easy to access all the certain parts of the engine however it's not very space efficient

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so it's quite large in size it's a lot of wasted space underneath the cowling

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and they are ultimately a little bit heavier than the engines

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that we use nowadays and these will be generally found on smaller but older aircraft

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so we also have diesel engines and these are very modern uh engines the way

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that they're produced however they run off diesel

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or more commonly jets a1 fuel

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and the advantage of this is a lot cheaper to run

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it's a lot cheaper fuel it's a lot stronger as well

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and they're often based off car engines

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which are then adapted for aviation however the disadvantage with this is they do require heavy turbochargers to give it

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that extra power so they're generally a heavier engine

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but then they are more reliable and cheaper to run an aircraft on as well

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so more commonly what will be used is a horizontally opposed

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so that means the cylinders will be moving in a horizontal direction

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and normally a four cylinder or possibly a six cylinder on the aircraft

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and this is the most common type of engine it's very lightweight it's simple

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and that's what is the best for aviation to save weights

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and to make it easy to maintain

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so now we're going to look at the piston engine in

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a bit more detail as you need to know it for the CA exam

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and how it works and all the elements to it

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but the main purpose of the cylinder

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or the cylinder piston engine is to create chemical energy

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so petrol or fuel into kinetic energy so into a energy

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that we can use the crankshaft which is the central point of the engine

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and the connecting rod which is connects the cylinder

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and the piston converts horizontal motion into a rotary motion

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so that's what the cylinders are horizontally opposed within a piston engine

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and the the crankshaft will turn

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that horizontal motion into a rotary motion to turn a propeller

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or some kind of drive shaft

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so we need to look at the the stages of a

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four -stroke cylinder engine also known as the auto cycle

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and there's four main stages you need to know now in

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a four cylinder engine this these won't all happen at the same time all happen simultaneously

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So one cylinder will be doing one event, the other cylinder will be doing another.

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So the first stage is called the intake stage.

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Now that's where there's two valves.

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There's got an inlet valve where air -fuel mixture comes in, and then we've got an exhaust valve.

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And you can see those on the first number one picture, there's those two sort of T -looking shapes.

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The inlet valve is the top one, the exhaust valve is the bottom one.

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We've also got two magnetos as well, which are those things on the side of the cylinder wall, and then we've got the piston head,

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the cone rod, and the crankshaft lower down.

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So in the first stage, the piston moves down within the...

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Vocabulário e dicas de fala para esta lição

Este vídeo tem 181 frases e 2150 palavras para praticar shadowing. A fala dura 14:33. O falante mantém um ritmo estável de cerca de 148 palavras por minuto, confortável para o shadowing. 82% das palavras estão entre as 3.000 mais comuns do inglês; vale a pena estudar o restante antes de começar.

Vocabulário principal deste vídeo

15 palavras do vídeo que vale a pena aprender, com pronúncia e significado:

Palavra	Pronúncia	Significado
cylinder substantivo	/ˈsɪləndɚ/	cilindro
exhaust verbo	/ɪɡˈzɔst/	esvaziar
horizontal adjetivo	/ˌhoɹəˈzɑn.təl/	horizontal
component substantivo	/kəmˈpoʊ.nənt/	componente
valve substantivo	/ˈvælv/	válvula
oppose verbo	/əˈpoʊz/	opor
aviation substantivo	/ˌeɪ̯.viːˈeɪ̯.ʃən/	aviação
cabin substantivo	/ˈkæbɪn/	cabana
ventilation substantivo	/ˌvɛntɪˈleɪʃ(ə)n/	ventilação
tail substantivo	/ˈteɪ̯l/	rabo, cauda
structural adjetivo	/ˈstɹʌk(t͡)ʃəɹəl/	estrutural
vertical adjetivo	/ˈvɝ.tɪ.kəl/	vertical
poison substantivo	/ˈpɔɪ.zən/	veneno, tóxico
expose verbo	/ɪkˈspoʊz/	expor, revelar
commonly advérbio	/ˈkɑmənli/	comumente

Phrasal verbs que você vai ouvir

Palavra	Significado
go up verbo	subir
write down verbo	anotar

Gramática neste vídeo

As estruturas que o falante mais usa, com as palavras exatas do vídeo:

Estrutura	No vídeo
Voz passiva be + particípio passado — o foco está no que acontece, não em quem faz	is designed · will be required · is displayed
Orações relativas who / which + oração — informação extra sobre uma pessoa ou coisa	assembly which is · itself which will · exhaust which is

Pronúncia para ficar de olho

O falante usa 45 contrações e formas reduzidas, como they're, we're, we'll. Diga-as na forma curta, do jeito que você ouve.

Os sons de “th”: smooth /smuːð/, breathe /bɹiːð/, underneath /ˌʌndɚˈniθ/
Os sons de “sh” e “zh”: aviation /ˌeɪ̯.viːˈeɪ̯.ʃən/, ventilation /ˌvɛntɪˈleɪʃ(ə)n/, structural /ˈstɹʌk(t͡)ʃəɹəl/, examination /ɪɡˌzæm.ɪˈneɪ.ʃən/, efficient /ɪˈfɪʃənt/
Palavras longas — acerte a sílaba tônica: horizontal /ˌhoɹəˈzɑn.təl/, aviation /ˌeɪ̯.viːˈeɪ̯.ʃən/, ventilation /ˌvɛntɪˈleɪʃ(ə)n/, examination /ɪɡˌzæm.ɪˈneɪ.ʃən/, integrity /ɪnˈtɛɡɹəti/

Como praticar com este vídeo

Ouça o vídeo inteiro uma vez sem falar e anote as palavras que você não conhece.
Faça shadowing frase por frase na velocidade normal, repetindo cada uma até o seu ritmo ficar igual ao do falante.
Grave a sua voz e compare com o original, prestando atenção a palavras como cylinder, exhaust, horizontal.

O que é a Técnica de Shadowing?

Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.

Técnica de shadowing: leia o guia completo passo a passo →

Prática de Shadowing: Aircraft General Knowledge | PPL Expert Online Ground School FREE Sample - Aprenda a falar inglês com vídeo

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