# Tag Info

## New answers tagged lift

0 votes

### Impact to lift curve slope for a tapered wing with only trailing edge sweep?

Would there be a reduction in lift curve slope or any other performance (compared to a straight wing, with no sweep), for my wing with only sweep at the trailing edge? 1. Lift curve slope. Leading/...
• 60.4k
1 vote

### How to determine the required twist in the Bell Shaped Lift Distribution (BSLD)

There is no analytical way to determine the twist for this (or most) load distributions. You must do it either numerically or through guess and check type approaches. We often think about the lift ...
• 565
1 vote

### Why is ground effect greater over smooth hard surfaces?

Not to be "that guy" but none of the provided answers are correct. You got close in your original question when you talked about friction and the air collecting under the helicopter. But ...
• 3,392
1 vote

### Why should the leading edge of the horizontal tail be lower than the trailing edge?

Short Answer: This is a result of making the aircraft stable in longitudinal axis. Longitudinal Stability Basics Nomenclature: $C_m$ is the pitching moment coefficient. Pitch-up moment is denoted ...
• 1,460
2 votes

### Why should the leading edge of the horizontal tail be lower than the trailing edge?

Airplanes with conventional tails use the tail surface to "trim" the wing, to force it to operate at an angle to the airflow so that it produces lift, as well as provide stability via "...
• 114k
4 votes
Accepted

### Why should the leading edge of the horizontal tail be lower than the trailing edge?

In conventional aircraft design, the tailplane usually provides a downforce to insure longitudinal stability around the pitch axis, which is also the Center of Gravity. Photo Source The center of ...
• 35.4k

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