The windspeed is such that it is necessary to deflate the envelope as rapidly as possible during a landing. When should the deflation port be opened?

The windspeed is such that it is necessary to deflate the envelope as rapidly as possible during a landing. When should the deflation port be opened?

• A. Just prior to ground contact
• B. Immediately after touchdown
• C. At the top of descent
• D. After the landing belt is secured

Answer: (A)

When you need to deflate quickly, the goal is to reduce lift at the exact moment you’re transitioning from flight to ground. Opening the deflation port just before contact lets hot air escape as you touch down, so the envelope collapses promptly and the balloon settles with minimal wind-driven drift. Venting earlier would lower lift too soon, risking a steeper or uncontrolled descent and reduced control while you’re still in the air. Venting after touchdown defeats the purpose of rapid deflation, since the balloon remains inflated on the ground and could be blown or dragged by gusts. Venting at the top of descent would miss the critical moment of touchdown where rapid deflation has the most stabilizing effect.

When you need to deflate quickly, the goal is to reduce lift at the exact moment you’re transitioning from flight to ground. Opening the deflation port just before contact lets hot air escape as you touch down, so the envelope collapses promptly and the balloon settles with minimal wind-driven drift. Venting earlier would lower lift too soon, risking a steeper or uncontrolled descent and reduced control while you’re still in the air. Venting after touchdown defeats the purpose of rapid deflation, since the balloon remains inflated on the ground and could be blown or dragged by gusts. Venting at the top of descent would miss the critical moment of touchdown where rapid deflation has the most stabilizing effect.