How should a round-out from a moderate-rate ascent to level flight be made?

How should a round-out from a moderate-rate ascent to level flight be made?

• A. Reduce the amount of heat gradually as the balloon is approaching altitude
• B. Increase heat suddenly to surge upward
• C. Maintain maximum heat
• D. Deflate the envelope rapidly

Answer: (A)

The main idea is to bring the balloon to a smooth stop in the vertical direction by easing off the lift as you approach the desired altitude. Lift comes from heating the air inside the envelope, so as you near the target height you want to reduce that lift gradually. By slowly reducing the burner heat, the vertical speed trends toward zero and the balloon settles into level flight without overshooting or sudden movements. If you heat more at that moment, you’d push the balloon higher and likely overshoot the altitude; keeping heat at maximum would keep climbing; deflating rapidly would cause a descent instead of a controlled round-out. So easing off heat gradually gives a calm, controlled transition to level flight.

The main idea is to bring the balloon to a smooth stop in the vertical direction by easing off the lift as you approach the desired altitude. Lift comes from heating the air inside the envelope, so as you near the target height you want to reduce that lift gradually. By slowly reducing the burner heat, the vertical speed trends toward zero and the balloon settles into level flight without overshooting or sudden movements. If you heat more at that moment, you’d push the balloon higher and likely overshoot the altitude; keeping heat at maximum would keep climbing; deflating rapidly would cause a descent instead of a controlled round-out. So easing off heat gradually gives a calm, controlled transition to level flight.