Quiz 3

1/0 AER 817: Systems Engineering Date: Nov. 14, 2022 Marks: 10 Student Name: Jiozhi 2hu Student ID: Section No. 04 1. (Marks 3-1/2] Answer the following questions: i) [Mark 1/2] Out of the total life cycle cost (LCC), 65% is locked in by the end of the following phase of the life cycle: @) Conceptual design b) Manufacturing c) Operations d) Disposal C ii) [Mark 1/2] At the Conceptual design phase, which method is used to estimate the total life cycle cost of the project: Bottom-up method b) Analogous method c) Parametric method iii) [Mark 1/2] Which kind of failure would most likely result from insufficient hardware debugging? (a)early failure b) catastrophic failure c) random failure d) wear-out failure Pw [Mark 1/2] What kind of failure would most likely result from high cycle fatigue? a) mid-life failure ( by wear-out failure c) constant failure d) early failure 1

v) (Mark 1/2] When is the risk and uncertainty in a project's life cycle at the highest? a)/Phase A b) Phase B c) Phase C d) Phase D c) Phase E f) Phase F vi) [Mark 1/2] When choosing between possible solutions to an engineering problem, the best solution is the one with the fewest risks and the most benefits. a) False b)True di) [Mark 1/2] A predictive systems development life cycle has a high technical risk. a) False b) True viii)[Mark 1/2] Which of the following fit the category of external risks? a) Project delays, budget under-runs, movement of city utilities b) Regulatory, currency changes, taxation c) Natural disasters, regulatory, design d) Inflation, design, social impact e) Political unrest, budget overruns, size and complexity of the project ix)[Mark 1/2] A benefit of involving suppliers in the innovation process is: a) An decreased number of ideas b) Fewer successful products c)) Shared financial risks d) More control over intellectual property e) More control over goals and innovation timing 2

3. (Marks 2-1/2] Determine a cost estimation relationship for unmanned planetary spacecraft with a dry mass between 100 and 1000 kg. The functional form of the CER is Total Cost = A + B* Dry_Wcight A C. Hie past data arc available from NASA online spacecraft model for the Dry Mass of 100 kg and 1000 kg (see the table below), Calculate the appropriate parameters A, B, C that most closely approximate the past data and determine the CER costs for dry mass of 100 kg, 500 kg and 1000 kg. Dry Mass (kg) 100 500 1000 Total Cost (SM) $192.38 $704.34 CER Cost (SM) 9233 3 B = 9228 - 1008.3634 = 1435// t 11 * • (500 ) a 5 - 47434 A-0 P= 14.350 c=0,5630 P.= 14133 (6oy?""" - 192 33 Pono - 1435-/00)8-5436 - 704 3 4

4. [Marks 2-1/2] You arc required to assess the technical risk in an Unmanned Aerial Vehicle (UAV) development using variable airfoil geometry by means of smart materials. a) [Mark l /2]Which two "factors" determine the risk in a Risk Profile Matrix or Risk Map? b) [Mark l /2]Which technical aspect is often taken to estimate the frequency with which a risk may occur? Can you give at least four typical entries on the ordinal scale determining this frequency? c) [Markl/2]Which kind of events may be considered by the other factor determining the risk? Can you give at least three typical entries in the ordinal scale used for that axis of the Risk Profile Matrix? (Contd. in the next page.) (0) Sosety factoy Human fotor 5