Discussion
Contributions to the pitching moment slope for a conventional layout.
| Component | Contribution | Stabilising |
|---|---|---|
| Wing with aft centre of gravity | Plus 0.10 | No |
| Fuselage | Plus 0.04 | No |
| Tailplane | Minus 0.22 | Yes |
| Total | Minus 0.08 | Yes |
What does the table establish about the tailplane's role?
Answer: B
Correct answer: It must overcome both the wing and the fuselage to make the aeroplane stable
The wing and fuselage together contribute \( +0.14 \), all of it destabilising. The tail supplies \( -0.22 \), and the sum is \( -0.08 \). So of the tail\'s contribution, nearly two thirds is spent simply cancelling the other two components, and only the remainder is available as actual stability margin. This is why a modest change to the fuselage or a shift in the centre of gravity can have such a large proportional effect on the total: the total is a small difference between larger quantities.
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