Aircraft

1. An aircraft configured to drop an object, the aircraft comprising:

a body;

a cavity defined in the body, the cavity opening on a bottom face of the body; and

a gas supply part configured to blow gas from vertically above to a blowing position on the object which is detachably mounted in the cavity, the blowing position being a position on a side closer to a nose of the aircraft with respect to a center of gravity of the object,

wherein the gas supply part has:

an inlet opening part that opens in the bottom face of the body on a side closer to the nose of the aircraft with respect to the cavity;

an outlet opening part that opens in a vertically upper side of the cavity with respect to the object in the cavity;

a gas supply channel connecting the inlet opening part and the outlet opening part with each other, the gas supply part being configured to take in air flowing along the bottom face of the body from the inlet opening part, and blow, from the outlet opening part, the air taken in onto the object; and

an outlet wall part that is in the cavity and configured to receive the air blown out of the outlet opening part and deflect the air to the blowing position on the object.

2. The aircraft according to claim 1 , wherein the gas supply part is configured to blow an airflow having a vertically downward component onto the object when the object is dropped vertically downward from the cavity.

3. The aircraft according to claim 1 , wherein the gas supply part further has an inlet wall part that is between the inlet opening part and the cavity, and protrudes from the bottom face of the body.

4. The aircraft according to claim 3 , wherein the inlet wall part is openable and closable, covers the inlet opening part when the inlet wall part is closed, and opens the inlet opening part and protrudes from the bottom face of the body when the inlet wall part is open.