Refinement and analysis of concept

• What is first cost
First cost
航空宇航学院
– The sum of the actual cost of making the aircraft and the
share of the development costs allocated to it.
• First cost is difficult to be predicted at the aircraft
conceptual design
– Simple cost models are usually based on aircraft volume
and/or mass and derived empirically from past experience.
– First cost is not a very suitable criterion for project
optimization.
Aircraft Conceptual Design