heat rise : kenaikan suhu
spray, sprayed, sprayed : menyemprot
ignition : pengapian
turn off, turned off, turned off : mematikan mixture
: campuran spark plug
: busi
Adjectives
temperature : suhu basic
: dasar turbine wheel : roda turbin
high : tinggi
Adverbs Modified Noun
continuously : dengan terus compressed air
: udara yang
menerus dimampatkan
D. Sharpen Your Skill
7
English for Mechanical Engineering Students of Sanata Dharma University
Play the recording and ask the students to listen to the monologue about a Basic Gas Turbine Engine. Ask the students to fill in the blanks and complete the
passage while listening to the cassette.
A Basic Gas Turbine Engine
The basic gas turbine engine consists of three main parts or sections: the 1
air compressor
, the 2
combustion chamber
, and the turbine. Briefly, here is how it works. Air, at atmospheric 3
pressure
is pulled into the air compressor where its
volume is decreased. Since 4
compression
of air causes a heat rise the highly compressed air, at high temperature, is forced into the combustion chamber. In the
combustion chamber a 5
fuel nozzle
fuel injector sprays in fuel, under high
pressure, to mix with the 6
hot air
. The fuel-air mixture is ignited with a resistance type 7
spark plug
. As the fuel-air mixture in a turbine engine burns continuously,
once ignited the 8
ignition
may be turned off. The 9
exhaust
leaves the
combustion chamber through a 10
duct
to enter the turbine unit. Here it delivers most of its energy to the turbine wheel.
Taken from Episodes in ESP: A Source and Reference Book on the Development of English for Science and Technology
Guide the students to answer the following questions based on the passage above.
1. What does the basic gas turbine engine consist of?
The basic gas turbine engine consists of the air compressor, the combustion chamber, and the turbine.
8
English for Mechanical Engineering Students of Sanata Dharma University
2. Where is the air pulled into to decrease its volume?
Air is pulled into the compressor to decrease its volume.
3. What does the compression cause?
Compression causes a heat rise.
4. Where does the fuel nozzle spray in the fuel?
The fuel nozzle sprays in the fuel in the combustion chamber.
5. What is the fuel-air mixture ignited with?
The fuel-air mixture is ignited with a resistance type spark plug.
E. Language Focus
1. Help the students to review the tenses that they use to describe a procedure.
Ask the students to underline all verbs and circle all be that they can find in the passage above.
2. In describing a process the students will deal with the Passive form of Simple
Present Tense and Connectors. Give brief explanation to them about those patterns.
a. Passive Simple Present Tense
+ : S + to be + V
3
+ O Air is pulled into the air compressor.
-- : S + to be + not + V
3
+ O Air is not pulled into the air compressor.
? : to be + S + V
3
+ O Is air pulled into the air compressor?
Now look at the passage, underline the sentences in passive form.
e.g.: Air at atmospheric pressure is pulled into the air compressor. b.
Connectors
as meanwhile
on the other hand since besides
however therefore unfortunately
then
Look at the passage once again and draw a box around the connectors that you can find in the passage.
A Basic Gas Turbine Engine The basic gas turbine engine consists of three main parts or sections: the air
compressor, the combustion chamber, and the turbine. Briefly, here is how it works. Air, at atmospheric pressure is pulled into the air compressor where its
volume is decreased. Since compression of air causes a heat rise the highly compressed air, at high temperature, is forced into the combustion chamber. In
the combustion chamber a fuel nozzle fuel injector sprays in fuel, under high pressure, to mix with the hot air. The fuel-air mixture is ignited with a resistance
type spark plug. As the fuel-air mixture in a turbine engine burns continuously, once ignited the ignition may be turned off. The exhaust leaves the combustion
chamber through a duct to enter the turbine unit. Here it delivers most of its energy to the turbine wheel.
Taken from Episodes in ESP: A Source and Reference Book on the Development of English for Science and Technology
F. Act Up
