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Following the announcement of the development plan of the stealth unmanned combat aircraft just a while ago, India once again announced a cutting-edge drone development project. According to a report on the “India Times†website on the 24th, a senior official of the Indian Defense Research and Development Organization revealed that the organization is developing a solar long-term drone that can be patrolled in the air for several consecutive days. Experts believe that solar drones are the most advanced drone models in the world, and countries such as Britain and the United States are also exploring and have not yet matured models to serve. This shows that India’s ambition to develop advanced drones is not small.
India develops solar long-haul drones
According to the report, according to Dr. Prahlada, director of the Aviation Development Agency of the Indian National Defense Research Development Organization, the solar-powered long-season drone project was proposed by the Indian Army and Air Force, and initial development work has begun. The UAV can fly for 15 consecutive days at an altitude of 30,000 feet (9144 meters). It was alleged that this drone absorbed solar energy during the day and converted it into electrical energy, which was used to drive the motor part and the other part was stored in the battery to provide electricity for night flight.
"The Times of India" stated that India's idea of ​​researching on solar drones was inspired by some long-voyage solar drone exploration plans being conducted by some international aviation giants. For example, Boeing is developing the "Sunhawk" solar drone, according to It is planned that it will be able to fly continuously within the atmosphere for 5 years.
Solar drones are cutting edge
Solar-powered aircraft appeared in the 1970s as the cost of solar cells decreased. Since solar-powered aircraft does not need to bring its own fuel, it has created conditions for long-term flight. Many countries are committed to developing solar-powered long-haul aircraft. Man-machine, but limited to the technical bottleneck, solar long-term drones are still immature cutting-edge technologies.
The current creation of the longest continuous flying solar drone is the “Westwind†drone developed by the British National Defense Technology Company. The first Westwind drone was manufactured as early as 2003 and the first prototype was launched in Cornwall, England. At present, the United Kingdom has already manufactured four prototypes with different appearances, and their time-to-vacancy records have been continuously updated. On July 9 last year, a “West Wind†took off from a military base in Arizona, and continued to fly for 14 days, 22 minutes and 8 seconds, creating the latest drone continuous flight time record. The American plan is even more ambitious. At present, the Boeing Company of the United States is developing a high-altitude long-season solar drone called Sunhawk. The initial plan was to develop a prototype and fly first before 2014. The Sunhawk prototype will stay in the upper atmosphere for 30 days. According to the plan, this type of solar drone can eventually fly for 5 years. The "Sun Hawk" will use an energy-efficient electric engine and thruster with 400 feet (122 meters) of wings to improve solar energy utilization and aerodynamic performance.
At present, since the photoelectric conversion rate of solar cells is still not high, and there is no major breakthrough in the batteries that provide night-time flying power, the performance of solar drones is further limited.
India drone plans one by one
In fact, India’s advanced drone development plan is more than a solar-powered drone. According to The Times of India, India’s National Defense Research and Development Organization has developed a series of drone plans for the military. This includes the autonomous unmanned surveillance aircraft that was just announced some time ago. The aircraft is very sci-fi in appearance, similar to the United States. The X-47B drone, with low detectability, can launch missiles, launch bombs, and accurately guide weapons. At present, India is still developing a Rustom-H hollow long-endurance unmanned aerial vehicle capable of carrying a continuous load of 350 kilograms for 24 hours. Its performance is similar to that of the United States' Predator. The aircraft will fly for the first time in two years. Previously, the Rustom-1 drone had completed its first flight in October last year. It can carry 8 to 12 hours of payload with a payload of 100 kilograms, or 12 to 15 hours for a load of 75 kilograms. It is alleged that the Indian Army plans to form seven Rustom drone groups (similar to squadrons). In India, there is a smaller Nishant drone whose life is 4 and a half hours. It can eject from a hydraulic catapult without the need of a runway. “Dawn†can carry optoelectronic and electronic intelligence. And communications intelligence load. The Indian Army has already received four such drones and there are currently eight being manufactured.
Some experts believe that drones under remote control have been regarded as the force multiplier and rule changer of modern warfare, and the development of drones has therefore become the consensus of all countries. However, the development of UAVs must also be done in the best possible way. From the point of view of India’s currently announced drones, it covers all current types of UAVs, and the design parameters are not too low. It remains to be seen.
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