Discussion
Enlarging the fin, all else equal, tends to
Answer: B
A larger fin raises \( N_\beta \), which raises the Dutch roll frequency and increases the second product in the spiral criterion, degrading spiral stability. It is the mirror image of the dihedral trade, and between them the two changes define the designer's room for manoeuvre: fin volume for directional stiffness, dihedral for spiral stability, and a yaw damper to buy back the Dutch roll damping neither of them supplies. Nothing about a bigger fin lowers the frequency, and it certainly does not leave the modes untouched.
No comment is present. Be the first to comment.
Loading…
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