Chap 3 : Aircraft Life Cycle & Dvt

Question 1

What are the four key buying factors ?

Answer 1

Price (most imp for leisure travelers)
Frequency & flexibility
Comfort & convinience
Reliability & punctuality

Question 2

What are the 6 traveler tribs in the future ?

Answer 2

Ethical travelers
Simplicity searchers
Cultural travelers
Social capital seekers (instagrameurs)
Reward hunters (rats)
Business travelers

Question 3

What are the steps of an aircraft life cycle ?

Answer 3

Research -> Dvt -> Production -> Product support

Question 4

What’s the life expectancy of an aircraft ?

Answer 4

40-50 years

Question 5

What are the main steps of the design process ?

Answer 5

Conceptual design -> Preliminary design -> Detail design

Question 6

What’s the payload-range diagram ?

Answer 6

Mass over the range of an aircraft :
1) if the payload is important but not a lot of fuel -> low range
2) to increase the range -> increase fuel mass and reduce payload

Question 7

Which disciplines & enabling technologies can influence on an airplane concept ?

Answer 7

Aerodynamics
Propulsion
Materials manufacturing
Structural concepts
Electronic systems
Flight & load control

Question 8

Which aircrafts are narrow-bodies, wide-bodies & macro-bodies ?

Answer 8

Narrow-bodies :
737
A318/319/320/321

Wide-bodies :
777
A330/340/350

Macro-bodies :
A380

Question 9

What’s the goal of the conceptual design step ?

Answer 9

Goal : estimate weight, size and aircraft configuration

Question 10

What are the key messages about the aircraft conceptual design step ?

Answer 10

Iterative process
Based on statistical & empirical functions
Uses active aircraft’s data
Not deliver automatically the best solution for the preliminary design

Question 11

What are the particularities of an aircraft concept at the end of the conceptual design step ?

Answer 11

Always a big compromise
Result of feasability study
Analysis of technological potentials
Lot of uncertainty
Basis of futher work

Question 12

What are the 4 steps of the life cycle costs ?

Answer 12

Dvt costs
Production costs
Operating costs
Retirement costs

Question 13

What’s the goal of the preliminary and detail design stages ?

Answer 13

Estimate the cost according to the profitability of the conception

Question 14

Of what dépends the residual value of an aircraft (at the end of its life cycle) ?

Answer 14

Aircraft type
Manufacturer
Market