How to make a hot air balloon by hand. You can fly a hot air balloon by hand. The materials you need to prepare include: hydrogen balloon, cup, toothpick, scissors, ribbon. 1. First prepare a hydrogen balloon. 2. Then drill two holes in the paper cup.

3. Use both ends of the ribbon to pass through the hole in the paper cup and tie a knot to secure it. 4. Then tie the middle part of the ribbon to the inner hydrogen balloon.

5. Put a toothpick in the paper cup to increase the weight. At this time, the hydrogen balloon is falling on the table.

6. Slowly take out the appropriate amount of toothpicks, and the hydrogen balloon will slowly float in the air. The hand-made hot air balloon is completed.

The fuel usually used in hot air balloons is propane or liquefied petroleum gas. The gas cylinder is fixed in the hanging basket. A hot air balloon can carry 80 kilograms of liquid fuel.

How to make a hot air balloon that can fly by hand. The first step: prepare an egg, a pair of tweezers and a small awl.

Step 2: Use an awl to make a small opening on the top of the egg, about the diameter of your index finger.

Step 3: Place the holed eggshell in a bowl, fill it with water, and heat it in the microwave for 90 seconds.

Step 4: Take out the eggshell with holes, insert your index finger inside, and gently tap the outside with tweezers while flipping the eggshell over to crack it.

Step 5: Soak the cracked eggshell in white vinegar for 6 minutes to weaken the adhesion between the eggshell (calcium carbonate) and the inner membrane of the eggshell (protein).

Let dry and peel off the egg shell little by little.

Step 6: After peeling off the eggshell, only the ellipsoid-shaped inner membrane inside the eggshell is left.

In this way, an "egg hot air balloon" is basically completed.

Note: The inner membrane of the egg must be intact, and a small amount of egg shell needs to be retained at the orifice, so that the center of gravity of the "balloon" can be appropriately moved downwards, which can increase the stability of the balloon's lift-off.

Step 7: Use a mineral water bottle to make a "launching platform" and place the egg hot ball on top of the launching platform.

Step 8: Place a candle (or a moxa stick for moxibustion, available on Taobao) below the launcher, ignite it and heat it, and the hot air will slowly lift the egg hot air balloon into the sky.

A hot air balloon is a balloon that uses hot air as the buoyant gas. There is a large opening and a hanging basket at the bottom of the air bag for heating by cold air.

After taking off, control the amount of fuel injection from the blowtorch to control the balloon's ascent or descent.

Hot air balloons appeared first, and now flying in hot air balloons has become a favorite aviation sport.

In addition, hot air balloons are also commonly used in aerial photography and aviation tourism.