Discussion
A typical phugoid period for a jet transport in cruise lies in the range
Answer: A
The band is roughly thirty seconds to two minutes, and the reason is \( T = \sqrt{2}\pi u_0/g \): at cruise speeds between about 70 and 250 metres per second the formula returns 32 to 113 seconds. One to five seconds is the short period's range. Five to fifteen seconds falls in the gap between the two modes, where a conventional aeroplane has nothing. Tens of minutes is far too slow for any aerodynamic mode, and would put the oscillation on the timescale of a fuel burn trend rather than a dynamic response.
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