The best engine of all time | Mathew Dixon | TEDxRundleAcademy
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0:17 - 0:21So how does a General Electric
GEnx engine work? -
0:23 - 0:26The GEnx engine specialties
are that only 10 percent of the air -
0:26 - 0:28actually gets ignited with the fuel;
-
0:28 - 0:31the rest just gets blown out
of the back of the engine. -
0:32 - 0:35Each engine is worth $34 million.
-
0:35 - 0:38That's as much as, probably,
two tons of gold. -
0:41 - 0:44It is the most expensive kind of engine.
-
0:44 - 0:46I already said that.
-
0:47 - 0:50This engine is only used on two aircraft.
-
0:55 - 0:58It's the safest type of engine ever built.
-
1:01 - 1:02The engine's insides -
-
1:02 - 1:05I'll explain the parts
from the front to the back. -
1:05 - 1:08So first, there's a sharp nose cone
on the front of the engine. -
1:08 - 1:11This is to improve the aerodynamic
flow into the engine. -
1:12 - 1:15This is to improve the aerodynamic
flow into the engine. -
1:15 - 1:17Next are the fan blades.
-
1:17 - 1:20Each fan blade is made
out of four sheets of carbon fiber, -
1:20 - 1:22a strong but lightweight material.
-
1:22 - 1:26It is also what the revolutionary
787 Dreamliner is made up of. -
1:27 - 1:31Then there's a huge pipe-looking
cylinder called the housing. -
1:31 - 1:34This part keeps the fan blades
from falling off -
1:34 - 1:36and gives the engine its unique shape.
-
1:39 - 1:42Then there's the low pressure compressor.
-
1:42 - 1:46This part receives a short burst of air
from the fan blades, -
1:46 - 1:48which drives the combustion fan.
-
1:51 - 1:54Then there's the high pressure compressor.
-
1:54 - 2:00It receives a massive burst of air
from the low pressure compressor -
2:00 - 2:05to drive the low pressure turbine,
which I'll explain later. -
2:07 - 2:08Then there's the compressor.
-
2:08 - 2:12This is where the fuel and the air
are mixed and ignited with each other -
2:12 - 2:16to create forward motion
to the rest of the engine. -
2:18 - 2:20Then there's the high pressure turbine.
-
2:27 - 2:32This is where the mixed air
gets blown into, to create - -
2:36 - 2:41it sends forward motion
to the fan blades at the front. -
2:41 - 2:46Then it also drives the fan blades
in the low pressure compressor, -
2:48 - 2:51which forces the combusted air
into the rear cone and out the back. -
2:52 - 2:55So how does the engine work?
-
2:56 - 3:00The engine works by sucking in air
through the front. -
3:00 - 3:03It's compressed to 1/10 its original size.
-
3:07 - 3:10Then the air and the fuel
are mixed and ignited. -
3:10 - 3:14This creates a small, controlled explosion
-
3:15 - 3:19that turns the fan blades in the turbines.
-
3:19 - 3:22And the mixed air
gets blasted out the back, -
3:22 - 3:25which creates the forward motion
to the bigger fan blades, -
3:25 - 3:29which shoves the uncompressed
air out the back. -
3:32 - 3:35So why do we need this engine?
-
3:36 - 3:39Because it emits less greenhouse gases,
-
3:39 - 3:42it has reduced
the number of safety issues, -
3:52 - 3:55it has saved a lot of fuel costs,
-
3:59 - 4:02and it's extremely quiet
compared to other engines. -
4:04 - 4:08This engine is only used
on two types of aircraft: -
4:10 - 4:12the 787 Dreamliner,
-
4:12 - 4:15the world's most luxurious
and advanced aircraft of the 21st century, -
4:16 - 4:22and the 747-8, the world's largest
passenger airliner -
4:23 - 4:24and the greenest too.
-
4:24 - 4:26Both are made by Boeing.
-
4:28 - 4:32But there are some problems.
-
4:32 - 4:35Even though this engine
is sending us in the right direction, -
4:35 - 4:37there are a few drawbacks.
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4:37 - 4:39It is extremely expensive to make,
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4:40 - 4:41to build, and maintain.
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4:45 - 4:49It still emits greenhouse gases,
but not as much as others. -
4:50 - 4:55It is extremely easy to freeze up
or get too cold to produce thrust - -
4:59 - 5:02and are easy to break
if not maintained for properly. -
5:03 - 5:08Even though these problems are bad,
there are a lot of solutions. -
5:09 - 5:13As one of my favorite inventors said -
-
5:14 - 5:17Wernher von Braun -
-
5:18 - 5:22"I've learned to use the word
'impossible' with great caution." -
5:24 - 5:28So [we need] to create engines
that do not have any of these problems: -
5:29 - 5:33engines that do not get too cold
to produce thrust or to freeze up, -
5:33 - 5:37engines that are cheap
and easy to manufacture, -
5:37 - 5:41engines that are really tough
and hard to break, -
5:42 - 5:49and engines that have detailed
maintenance manuals with the construction. -
5:56 - 5:58Have a safe and fun time flying.
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5:58 - 6:00See you in the air.
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6:00 - 6:01(Applause)
- Title:
- The best engine of all time | Mathew Dixon | TEDxRundleAcademy
- Description:
-
General Electric's GEnx engine is a feat of engineering prowess. In this short, charming talk, young Mathew Dixon explains why this engine is remarkable. However, it is his musings upon the importance of innovation that make this talk captivating.
Mathew Dixon is a grade six student who is fascinated by innovation, engineering, and airplanes. He wants us to all know that "impossible" is not in his vocabulary.
This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx
- Video Language:
- English
- Team:
- closed TED
- Project:
- TEDxTalks
- Duration:
- 06:03
David DeRuwe approved English subtitles for The best engine of all time | Mathew Dixon | TEDxRundleAcademy | ||
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David DeRuwe accepted English subtitles for The best engine of all time | Mathew Dixon | TEDxRundleAcademy | ||
David DeRuwe edited English subtitles for The best engine of all time | Mathew Dixon | TEDxRundleAcademy | ||
Lisa Thompson edited English subtitles for The best engine of all time | Mathew Dixon | TEDxRundleAcademy | ||
Lisa Thompson edited English subtitles for The best engine of all time | Mathew Dixon | TEDxRundleAcademy | ||
Lisa Thompson edited English subtitles for The best engine of all time | Mathew Dixon | TEDxRundleAcademy | ||
Lisa Thompson edited English subtitles for The best engine of all time | Mathew Dixon | TEDxRundleAcademy |