Rolls Royce engine´s questionary.

ROLLS ROYCE ENGINE'S QUESTIONS

1. What is the name for materials such as ceramics that not let heat energy pass through them?

a) Insulators 👌
b) Conductors
c) Metals
d) Composites



2. Why are turbine blades coated with a ceramic material?

a) It helps make them stronger.
b) It helps to stop them melting.👌
c) It helps make them lighter.
d) It makes them a better color.

3. Drag and drop the densities to the correct materials:

4,5g/m3 ---> Titanium 6/4
8,2g/m3 ---> Nickel Alloy
5,1g/m3 ---> Partially Yttria Stabilised Zirconia
8,4g/m3 ---> Nickel Super Alloy

4. What are the two main things engineers must consider when choosing materials to use in an engine?

a) Colour and weight
b) Cost and color
c) Weight and name
d) Cost and weight 👌

5. Which statement is true:

a) To achieve the same amount of thrust you can either accelerate a small mass of air to a high velocity or a large mass of air to low velocity. 👌
b) To achieve the same amount of thrust you can either accelerate a small mass of air to a small velocity or a large mass of air to low velocity.
c) To achieve the same amount of thrust you can either accelerate a small mass of air to a high velocity or a large mass of air to a high velocity.
d) To achieve the same amount of thrust you can either accelerate a small mass of air to a low velocity or a large mass of air to a high velocity.

6. Use the ideal gas law to work out the following: If 1m3 of gas with a pressure of 1Pa and temperature 200K is compressed to a volume of 0,5m3  at a constant temperature. What is the pressure?

a) 0,5Pa
b) 1Pa
c) 2Pa 👌
d) 4Pa

7.Choose the correct types of energy that are wasted when fuel is used to power a jet engine:

a) Sound
b) Kinetic 👌
c) Chemical 👌
d) Heat 👌
e) Light

8. Which of the following statements are true?

a) A jet engine works by making the air going through it less dense.
b) A jet engine works by making the air going through it colder.
c) A jet engine works by sucking air in to pull the airplane forward. 👌
d) A jet engines work by pushing air out of the back of the engine which in turn pushes the engine forward.

9. How are the walls of the combustor attached to the "head" at the front of the combustor?

a) Glued in place
b) Screwed in place
c) Welded 👌
d) Stapled together

10. What is special about the nickel alloy used in turbine blades?

a) They are grown from a single crystal of metal. 👌
b) They are very expensive.
c) They will never melt.
d) They are made from more than one crystal of metal.

11. What is the process called the blows high-pressure gas to shape the sheets of titanium used to make fan blades?

a) Ordinary plastic forming
b) Superplastic forming 👌
c) Welding
d) Grinding

12. What is the name of the process that makes cooling holes and other features in turbine Blades?

a) Drilling
b) Electro-discharge machining
c) Superplastic forming
d) Wax-modeling 👌

13. Drag and drop the pressures next to the right parts of the engine:

Fan ---> 10Psi
Compressor ---> 100Psi
Combustor ---> 250Psi
Turbine ---> 60Psi

14. What is the job of the compressor?

a) Pushes a large volume of air out of the back of the engine to push the airplane forward.
b) Squashes the air before fuel is added. 👌
c) Where fuel is added and burnt.
d) Takes energy from fast-moving air to drive the rest of the engine.

15. How much power does a first stage turbine blade take out of the gas stream?

a) The same as a small family car.👌
b) 5 times the power of a small family car.
c) 10 time the power of a small family car.
d) 20 times the power of a small family car.

16. Put the following parts of a jet engine in order:

1. Fan
2. Compressor
3. Combustor
4. Turbine

Air Florida accident, flight 90.

Hello again! 

After a few days, I’m here to tell you something new. Today I’m going to tell you what happened with the flight 90 of Air Florida. It occurs in 1982. A very cold day, one of the coldest.

The plane is being prepared to fly again. In the cockpit are the technic crew, is composed of the Captain and the first pilot, both unexperimented in the 737 airplane type.

The passengers are boarding, the cargo it’s already loaded and the last tasks are on the way.

One of them is the thaw service. Pilots are waiting for them cause without them, they aren't able to fly.

For win time the pilots consider to activate the reverses in the way to help, not knowing that the desition made, will be an enormous mistake. In consequence, the reverses froze the temperature sensor of the engine.

In addition, once the thaw service ended, anyone knew that the solution of the thaw agent was poor in front of the required levels.

When everything was apparently finished, they started the push-back. Running to the runway the accumulation of snow increased, helped by the airplane in front. The captain thought that the blast of that airplane will thaw his airplane, making a new mistake, not only the blast didn’t thaw but also helped the ice accumulation.

Once the aircraft was ready to take place in the runway the pilot asked the captain to repeat the thaw procedure but the captain didn’t want and continued with his thinks. At the same time, the pilot again sees that the instruments didn’t give normal parameter and once again the pilot advice to the captain and the captain didn’t react to this important information.

After all these factors we are able to see that it’s not just one mistake, it’s the result of a chain of bad desitions plus unexperimented pilots and a bad thaw service.

As you can imagine only a few seconds after taking off the airplane felt of the sky like a rock touching the land in a river after pass and kill people from a bridge.

The investigations cleared that the first and most important guilty was the Captain cause his performanceñ. Followed by the rest of the crew that didn’t advice about the new accumulation of ice after the thaw procedures. Guilt also of the thaw service and finally guilt of the delay on the ground that permitted to the ice to be accumulated again. 

One day in class.

                         

                  Hello everyone, nice to meet you again. Probably most of you want to know how is a day in our curse and now you're going to know it.

First of all, before doing the classes we need our uniform that it's made of: a navy blue short sleeved t-shirt, a navy fleece jacket, blue long trousers, and our safety shoes. All this pack costs about €110 I think it is a normal price, could be worst hahaha. Of course, if you want more pieces you must pay them. After the uniform you will need the books, for us is "Modules" but do not panic, the center, in this case, Globalia Formation Center, will provide you with them. With books and uniform, we're ready to know how it's one of our days.

To start we need to separate the explanation because we have two study centers, first one and most important it's Globalia Formation Center and the second one it's Son Pacs Institute also very important. We go every Monday to Son Pacs and the rest of the week we go to Globalia.

Now I'm going to explain one day in Son Pacs:

We start at 8 o'clock that makes us very happy for two reasons, most of the colleagues are from Palma and we live there and the second reason it's because we can sleep a little bit more. At 8 we start with Technic English with Catherine our teacher. We only do the first two hours. Then we continue one hour with Joan Llabres, he teaches us materials, for me a very interesting but at the same time very very dense. After the first our we have a break of 20 minutes to take coffee o whatever. Then we do two more hours with Joan. After he comes, the last subject in the day that is Digital Technics also very interesting and we do it with Sr Pons. That's a Monday in Son Pacs, now I'm going to explain you a day in Globalia.

From Tuesday to Friday we must go to Llucmajor. It's more or less 20 minutes far from Palma. We start the day at half past seven, that kills me. In our first three hours, we go to the workshop and we usually put in practice the subject done the day before. Hopeful we have every hour or two hours 5 minutes break to breath or take a cigarette in the case or whatever. After this three hours, it's our big break of 20 minutes to have coffee and a sandwich. We usually go to a cantine that is very near only 4 minutes by foot ace where goes everyone who wants to go not only our class. Globalia to clarify it's a complex of buildings that contains our Formation Center but also offices to work and other formation centers. Globalia it's a multinational. So after the "big break", we continue with for hours with only one subject and only one teacher... That kills me again, you can trust me hahaha. But we're in luck because our teacher Helena that teach us pure Electricity it's very good teaching and treating us. To finish we will end our day at quarter past three. Very tired of course. Finally comes the module exams they are at 3pm each one and to have the license you must pass all the modules with 7.5 percent or more. It's very very very hard. One advice: if you're lazy don't come it's not your course because only one exam can contain question from 500 pages easy and of course more and less. So that's what I can tell you. See you next time!

Resume of 747-400 overhaul and interesting info.

Last Monday we watched a video showing a magnificent overhaul of a Boeing 747-400. Now I'm going to show you some info that makes of this overhaul an amazing milestone.

First of all, that job it's done by a team of 200 incredible people. That team must doit every 6 years. The milestone is a sum of 30000 hours of pure and stressful hard work, a work in a machine of 200 million. They check 20000 different parts in a set of 12000 jobs. In those jobs, they checked also 6 million components.

Every 747-400 it's made with the enormous figure of 172000 miles of wire, yes 172000 miles. That airplane has a weight of 180 tons that stands on three landing gears and each one of them cost 300000$ and hold in total 18 wheels. To do the overhaul they must stand all the tons 20 feet above the ground. This model has 12 scape chutes that inflate in only 3 seconds, amazing cause they make 30 meters. To replace one of them the team needs over 6 hours. Another hard task is to remove the panels. For example, only the "down panels" are 300 and the "side panels" 140. All the 747 hold 4 enormous engines that each one cost 8 millions and give a total horsepower of 120000hp. That horsepower gives a total thrust of 60 thousand pounds. In air, at the cruising time the airplane will fly at 910 km/h it's very very fast. To feed the engines the 747 accounts with fuel tanks. The biggest one can contain 65 thousand liters in 6 compartments, imagine the rest. Autonomy is such high, this condition permit to this model fly over 14 hours and if the airplane has 300 passengers it will need one tone of food and drink and also will load over 50000 products to the costumers. Another interesting part is the two black boxes. It's funny because they originally are orange and red. One of them copies all the data information and the other one copy all the radio voices. They are so well built that can resist 1000 degrees for half hour.

The dimensions are spectacular, the wingspan its the same as a football pitch.

One of my favorite curiosities it's that every airplane also the 747 it's stricken by a lightning one time per year, for me, it's a lot. Also, it's more common the strikes of birds and hail and is very dangerous, they can shoot down them. Inside the airplane, the crew has its own relaxing place but they only use it 3 hours per trip.

A part of the overhaul every airplane will have to pass a little check every year, as you can see it´s very safe.

Finally, I want to tell you some prices that will do a little pain hahaha.

A second-hand engine costs 1.2 million, only a second-hand airplane coffee machine will cost you 3000$. An old toilet boul 500$ and for examole a windshield 30000$.

And that's all for today I hope you liked this post and see you next week.

Airplane parts and questions.

1.                What are the names of the parts of the airplane pictured above?

1.             A: Vertical Stabilizer

2.            B:  Rudder

3.            C:  Elevator

4.            D:  Horizontal Stabilizer

5.            E:  Flaps

6.            F:  Aileron

7.            G:  Wing

8.            H:  Engine

9.            I:   Fuselage

10.          J:  Slats

2.            Describe the following aircraft motions.

1.             Pitch:  Up and down movement of the plane

2.            Roll:   The rotation movement of the wing

3.            Yaw:   The side to side movement of the nose

4.            Loop:  A complete roll movement

5.            Dive:   Decrease the inclination of the nose

6.                   Climb:   To go up

7.            Lift:  A force to push the airplane in the air

3.         What are the functions of the parts of the airplane pictured above?

1.             A:  Control the swinging from side to side

2.            B:  Directs the tail left or right changes yaw movement

3.            C:  It controls the pitch

4.            D:  Controls the pitch

5.             E:  Controls lift and drag

6.             F: Used to roll the wings from side to side

7.            G:  Flat surface to generate lift

8.            H:  Generate thrust

9.            I:  Holds every part of the airplane together

10.          J:  Increase the lift

4.         Which parts are used to control lift at low speed for takeoff and landing?

                      The parts used to are slats, flaps, and spoilers. 

5.         Which parts, installed one to each wing, operate in opposite directions (i.e., one up and one down)?

                      That part is the aileron.

6.         If the part in Problem 4 on the right wing is up and the one on the left wing is down, what will the airplane do?

                      The airplane will roll as the clock, turn or roll right.

7.         If the pilot lowers the elevator, what will the airplane's tail do?

                      The tail if you lower the elevator will go up.

8.         What will this in turn cause the airplane's nose to do?

                      In the same case, the nose will go down.

9.         If the pilot moves the rudder to the left, what will the airplane's tail do?

                      The airplane will roll to the left as well.

10.       What will this in turn cause the airplane's nose to do?

                      The airplane will go to the left in the same case.

11.       What motion will occur in an airplane with the elevator deflected up and the rudder deflected to the right?

                      The airplane will go up and right at the same time.

           12.         What is a spoiler? 

             A spoiler controls the flow of the airplane from side to side.

Know something about me.

Hello you all, today I'm here to explain how I'm going to become a technician in aircraft maintenance.
First of all, we need to know some info about me and why I'm studying this course and no other one.
I'm Alvaro Cruz Di Benedetto. At the moment I'm a 20 years old guy living in Palma de Mallorca, Balearic Islands, Spain. I come directly from the Secondary Required Education, in Spain you finish this 4 courses at the age of  16 if everything goes as must to go hahaha. After these courses, I started working and then going nowhere with my life. But one day the situation changed fortunately and I started a new course to prepare my self for exams that are necessary to get in the technician aircraft maintenance course. I passed the exams and finally, I started my project to become a technician. 
And the question that is in all our minds: Why I decided to study this course?
Very simple, to start all my family is involved in this area, aircraft, not as a technician but in yes aircrafts world. In a first moment I wanted to be a pilot when I was young but, as you know, all mothers know more of it son that the own son about itself. One day talking with my mum she said, Alvaro, you know you are a very active person and you love to be in movement all the time. Did you think about to be, I don't know how many hours in a little space? That question changed my mind. I continue hearing her words and she proposed me to be a technician. From that moment to nowadays it's my dream and now I started it to become real.