LJ2- Lesson 6 - Hydraulic system

• Engels
• MBO
• Studiejaar 2

Hydraulic system

Lesson goals

At the end of this lesson, students will:

• Learn about the past continuous and quantifiers

• Learn about the main hydraulic components
• You know the functions and purpose of the hydraulic system

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Homework

Exercise 3

1. Engine one bleed air system
   
2. Engine two bleed air system
   
3. Auxiliary Power Unit
   
4. Ground Power Unit
   
5. Standby reservoir pressurization
   
6. Engine two start system
   
7. Right air-conditioning system
   
8. Right anti-ice system
   
9. Engine one start system
   
10. Hydraulic system & reservoir pressurization
    
11. Total Air Temperature (TAT) probe
    
12. Water pressurization
    

Exercise 4

1. C
   
2. I
   
3. A
   
4. L
   
5. F
   
6. B
   
7. J
   
8. D
   
9. H
   
10. E
    
11. K
    
12. G

Every Sunday, we ______ a movie on TV.

1. watch
2. are watching

We ___ English class right now.

1. have
2. are having
3. are have
4. are haveing

MAAK ONTKENNEND
My father (to work) at the moment.

1. doesn't work
2. is working
3. is not working
4. works

Which signal word tells you that you need to use present continuous?
(You can choose more than one answer)

1. At the moment
2. Every Saturday
3. Now!
4. Often

Selective listening

In real life situations, you usually don’t listen to everything that is being said around you. You ignore some information and focus on the rest.

• Scanning: You listen for the information you need and ignore the rest.
  
• Focusing your attention: It saves you energy and focuses on what is relevant.
  

What did we learn about the hydraulic system?

Exercise 1: Listening

Before you start a listening exercise always:

• Read the questions
  
• Think about what you already know about the subject

We are going to listen to an explanation of how the pneumatic system works:

1. Go to www.edpuzzle.com
2. Log in with your own name and password
3. Click on join class and log in with the code the teacher will give you
4. Pay attention: Answer the questions
5. Watch the video called: ‘ATPL Training Airframes Systems 6 – Hydraulics – Basic Hydraulic system
6. Done? Name the components of exercise 3 & 4

edpuzzle.com

Exercise 1: Answers

1. What is the Bramah press?

A passive hydraulic system

 

2. What are the two types of active hydraulic systems which are used in an aircraft?

The open-center system and the closed system

 

3. What are the six components that are used in the hydraulic systems?

A reservoir of oil, pump, selector or control valves, actuator, filters, and a relief valve.

Exercise 1: Answers

4. What is a disadvantage of the open-center hydraulic system?

Only one service can be operated at a time.

 

5. What happens if you select a user system of the hydraulic system?

The selector valve will open, and the hydraulic fluid will be directed to an actuator, which will move.

 

6. What kind of components will be powered by an open-center hydraulic system?

Landing gear and flaps, because they only need to be powered for a short amount of time during each flight.

Exercise 1: Answers

7. What is the great advantage of the closed hydraulic system?

Multiple services can be operated at the same time.

 

8. What is the function of the automatic cut out valve?

To divert pump output to the reservoir and to prevent overloading the pump.

 

9. What are two important differences between the open-center and closed hydraulic system?

Two or more services can be operated at the same time with a closed hydraulic system (while only one service can be operated with an open-center hydraulic system)

It is not so important to return the selector valve to neutral once the operation is complete. In a closed hydraulic system,  the pump control system deals with the consequent pressure increase.

Exercise 1: Answers

10. What is a hydraulic lock?

The fluid is locked-in on both sides of the actuator, consequently because the fluid is incompressible the actuator will not be able to produce any on-demand movement.

 

11. What does a hydraulic power pack consist of?

An electrical driven pump, a pressure operated switch, a reservoir, and an accumulator.

Exercise 3 & 4

Can you name all the different parts of the hydraulic system after having watched the video?

Do you also know what kind of components the hydraulic system services?

• Make exercise 3 and exercise 4
  

Exercise 3- Answers

1. Accumulator
   
2. system pressure
   
3. vent
   
4. pressure regulator
   
5. oil cooler
   
6. pressure relief valve
   
7. standpipe
   
8. pump
   
9. filter
   

10. hand pump

11. check valve

12. selector valves

13. actuator

14. reservoir

Exercise 4- Answers

1. Rudder ratio charger actuator

2. cargo door actuator

3. in-line horizontal stabilizer motors

4. AC motor pump

5. brake valves

6. flap/slat actuators

7. constant speed motor generators

8. main engine pumps

9. ram air turbine pump

10. power transfer unit

11. filter module

12. nose cargo door actuator

13. integrated electrohydraulic actuator steering package.

Grammar - Past simple and quantifiers

www.englishclub.com

Which verb is in the past simple tense?

1. I will give
2. She had given
3. I went
4. They have been

We use the Past Simple tense when...

1. We are talking about things that will happen
2. For things over in the past
3. For what is happening now
4. When we know the time of something in the past

Which Past simple sentence is correct?

1. The thief grabed her bag, but the police stopped him.
2. The thief grabbed her bag, but the police stopt him.
3. The thief grabbed her bag, but the police stopped him.

Which sentence is in the Past Simple tense?

1. I have been to the market.
2. I am at the store.
3. I will go to school today.
4. He shopped for new shoes.

You use a past simple when...

1. Something happened in the past.
2. Something happens every day.
3. Something will happen in the future.
4. Something hasn't happened yet.

Past Simple:
Pick the example of the past simple:

1. She was living in the city.
2. She lived in the city.
3. She has lived in the city.
4. She has been living in the city.

Past Simple:
Pick the example of the past simple:

1. Was she living in the city?
2. Did she live in the city?
3. Has she lived in the city?
4. Has she been living in the city?

Exercise 5 — Match the words from the text with their synonyms. 

1. Jack = 
2. Device = 
3. Ram = 
4. Similar = 
5. Effort = 
6. To entail = 
7. To sustain = 
8. Locking = 
9. Main features = 

10. Delivery = 
11. Orifice = 
12. To set = 
13. Setting = 
14. To alter = 
15. Lack of = 
16. Topping up = 
17. Level = 
18. Container = 
19. To hesitate = 
20. To expel = 

Exercise 5 - Answers

1. Jack = lifting device
   
2. Device = apparatus
   
3. Ram = plunger
   
4. Similar = same
   
5. Effort = exertion
   
6. To entail = to involve
   
7. To sustain = to support
   
8. Locking = securing
   
9. Main features = general structure
   

10. Delivery = supply
11. Orifice = calibrated hole
12. To set = to adjust
13. Setting = adjustment
14. To alter = to change
15. Lack of = absence of
16. Topping up = filling to required level
17. Level = height
18. Container = tank
19. To hesitate = to stop
20. To expel = to drive out 

Text

Text

Text

Text

Conjunctions

Conjunctions

Capital letters

• In the names of people, places, or related words
• At the beginning of a sentence
• In the titles of books, films, organizations, etc.: Christmas Day
• In abbreviations: USA (United States of America)
• Personal pronoun I: For example in: ‘Did I do that right?’
• Use a capital letter for days of the week, months of the year, holidays: Monday, November
• Use a capital letter for countries, languages & nationalities, religions

Editing - Handout

Find the missing capital letters, punctuations and spelling mistakes in the following text:

Thinking about buying a  pet dog?

Homework - Autumn break assignment

• Complete exercise 5, 6 and 7
• Prepare for the group presentation about the systems

How satisfied and confident are you with your current speaking level in English? Choose one emoji to represent this?

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