Systems and methods of inducing rainfall

1. A system for use in inducing rainfall, said system comprising:

an aircraft configured to travel through an ambient environment at a first temperature; and

a precipitation system coupled to said aircraft, wherein said precipitation system is configured to:

intake air from the ambient environment;

form a particle from particulate matter in the intake air, wherein said precipitation system comprises a refrigeration system coupled to said aircraft, wherein said refrigeration system is configured to extract nitrogen from the intake air such that liquid nitrogen is formed to cool the particle; and

discharge the particle at a second temperature lower than the first temperature such that moisture in the ambient environment condenses on the particle.

2. The system in accordance with claim 1 , wherein said precipitation system comprises:

an ion generator coupled to said aircraft, wherein said ion generator is configured to electrically charge the particulate matter in the intake air such that the particulate matter fuses together forming the particle, wherein said refrigeration system is configured to cool the particle to the second temperature lower than the first temperature such that moisture in the ambient environment condenses on the particle.

3. The system in accordance with claim 2 , wherein said ion generator is configured to intake air as said aircraft travels through the ambient environment, electrically charge the particulate matter in the air such that the particle is formed, and discharge the particle towards the ambient environment.

4. The system in accordance with claim 2 , wherein said ion generator is configured to discharge the particle into the ambient environment when said aircraft is maneuvered at least one of through or into a cloud in the ambient environment.

5. The system in accordance with claim 2 , wherein said ion generator is configured to electrically charge the particulate matter such that the particle having a size of at least about 1 micron is formed.

6. The system in accordance with claim 1 , wherein said aircraft comprises an unmanned aerial vehicle.

7. The system in accordance with claim 1 further comprising a rectenna array coupled to said aircraft, wherein said rectenna array is configured to receive microwave beams and convert the microwave beams to direct-current energy.

8. The system in accordance with claim 7 , wherein said rectenna array is configured to distribute the direct-current energy to power electrical systems of said aircraft.

9. A method of inducing rainfall, said method comprising:

launching an aircraft configured to travel in an ambient environment at a first temperature;

intaking air from the ambient environment;

using a precipitation system, comprising a refrigeration system, onboard the aircraft to form a particle from particulate matter in the intake air;

extracting nitrogen from the air;

condensing the nitrogen to form liquid nitrogen;

using the liquid nitrogen to cool the particle; and

discharging the particle at a second temperature lower than the first temperature such that moisture in the ambient environment condenses on the particle.

10. The method in accordance with claim 9 further comprising maneuvering the aircraft at least one of through or into a cloud in the ambient environment as the particle is discharged from the aircraft.

11. The method in accordance with claim 9 , wherein using a precipitation system comprises electrically charging particulate matter in the ambient environment such that the particulate matter fuses together to form the particle.

12. The method in accordance with claim 11 further comprising cooling the particle such that the particle is discharged at the second temperature lower than the first temperature.

13. A system for use in inducing rainfall, said system comprising:

an aircraft configured to travel through an ambient environment at a first temperature; and

a precipitation system, comprising a refrigeration system, coupled to said aircraft, wherein said refrigeration system is configured to:

intake air from the ambient environment;

extract nitrogen from the air;

condense the nitrogen to form a liquid cryogen; and

discharge a cooled liquid particle formed from the liquid cryogen into the ambient environment at a second temperature lower than the first temperature such that moisture in the ambient environment condenses on the liquid particle.