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4.4 CONCEPT SELECTION
4.4.1 Concept Generation
During the concept development, five design concepts were generated. All
concepts are drawn in 3D view so that they can be visualized and compared. The
computer ‐aided drawing of concept two is shown in Figure 4.10.
Figure 4.10 The concept two.
The detailed explanations of the concepts are as follows:
1 Concept
1: the simulator has an economy class area. There are two rows of economy
class seats. New economy class seats will be used. The simulator is
built with a static platform. The simulator structure is built with steel beam.
Recyclable materials are used.
109 2
Concept 2: the simulator has a galley, a lavatory and two business class
areas. There are two individual business class seats. The simulator is built
with a static platform. Recyclable materials are used.
3 Concept
3: the simulator has a galley, a lavatory, an economy class area and a
business class area. There are two rows of economy class seats and one business
class seat. The simulator is built with a motion platform. Recyclable
materials are used. 4
Concept 4: the simulator has a galley, a lavatory, an economy class area and
a business class area. There is one row of economy class seats and one row
of two person business class seats. The simulator is built with a motion
platform. Recyclable materials are used.
5 Concept
5: the simulator has a galley, a lavatory and two economy class areas.
There are two rows of economy class seats. The simulator is built with
a static platform. 4.4.2
Concept Evaluation and Selection
The evaluation of the five concepts was carried out by using the weighted
objective method. Seven requirements Table 4.1 have been set to evaluate the
concepts with weighted objective method. The evaluation of the five concepts is
shown in Table 4.8. Each requirement was provided with relative weight, such as
performance 0.20, materials 0.10, size 0.10, weight 0.05, strength 0.15,
safety 0.05, design 0.10 and cost 0.25. The requirement with highest weight
is ‘cost’ because the aircraft cabin simulator needs to be built within the limited
SEAT budget. It is followed by performance and strength. The proposed aircraft
cabin simulator should provide standard flight and function without any failure
during the experiment. Each concept is rated with 10‐point scores S. Each score
is multiplied by the relative weight to give relative values V. Each value is
summed up to get the total values for each concept. Subsequently, the total
values of each concept are compared and the highest values are selected.
Concept 3 as shown in Table 4.8 represents the highest values and is selected as
best concept.
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Table 4.8 Evaluation of the overall simulator concept using the weighted objective
method.
Concept 1
Concept 2
Concept 3
Concept 4
Concept 5
No. Element
Weight S
V S
V S
V S
V S
V
1. Performance
0.20 4
0.80 5
1.00 9
1.80 7
1.40 7
1.40 2.
Materials 0.10
4 0.40
6 0.60
7 0.70
5 0.50
6 0.60
3. Size
0.10 6
0.60 7
0.70 8
0.80 5
0.50 7
0.70 4.
Weight 0.05
8 0.40
7 0.35
5 0.25
6 0.35
7 0.35
5. Strength
0.15 8
1.20 8
1.20 8
1.20 7
1.05 8
1.20 6.
Safety 0.05
5 0.25
5 0.25
5 0.25
5 0.25
5 0.25
7. Design
0.10 5
0.50 5
0.50 8
0.80 6
0.60 5
0.50 8.
Cost 0.25
9 2.25
6 1.50
6 1.50
7 1.75
8 2.00
Total value
1.00 6.40
6.10 7.30
6.40 7.00
4.5 FINAL DESIGN AND IMPLEMENTATION
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