Discussion
Assertion (A): Constraint analysis alone determines the optimum aspect ratio.
Reason (R): Higher aspect ratio reduces induced drag and hence the thrust required.
Select the correct answer from the options below.
Answer: D
Correct answer: A is false but R is true
The assertion is false. Constraint analysis cannot determine the optimum aspect ratio, because aspect ratio is an input to it: a value must be assumed before the cruise and climb constraints can be drawn at all.
The reason is true - higher aspect ratio does reduce induced drag and hence the thrust required - but it captures only one side of the trade. The diagram shows the thrust saving and not the structural weight penalty that grows with span, so choosing aspect ratio requires a weight and mission analysis, typically by running the sizing at several values and comparing the results.
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development