Picture Note: The T333 unmanned helicopter at the Tianjin Direct Expo, which is currently the largest unmanned helicopter in China
On September 14-17, 2017, at the fourth At the Tianjin International Helicopter Expo, various military and civilian helicopters were unveiled. Among the unmanned helicopters on display, there is an unmanned helicopter that is huge and can be called a "Big Mac". It is very conspicuous among various light and small unmanned helicopters. It is the latest research and development and production of Beijing AVIC Technology Co., Ltd. The T333 ***-axis dual-rotor unmanned helicopter is also the largest unmanned helicopter in China.
Overall performance
The T333 unmanned helicopter is a 3-ton unmanned helicopter with a length of 5.4 meters, a width of 3.3 meters and a height of 3.325 meters. It adopts lightweight modular design to complete Appropriate weight reduction, empty weight is 1200 kg, maximum take-off weight is 3000 kg, and maximum load is 1500 kg.
From the perspective of appearance and aerodynamic planning, the T333 adopts a lightweight modular design, using a single-axis dual-rotor configuration and streamlined shape, an "H"-shaped tail, and a retractable wheel launcher at the rear three points. It has strong power efficiency and wind resistance. In addition, it adopts the integrated design of engine assist, which solves the problem of safe landing under the condition of single engine flameout, expands the safe flight channel, and greatly reduces the avoidance area.
The biggest feature of the T333 is the use of ***-axis dual rotors. Compared with a single rotor, the dual-rotor structure has many advantages such as large lift, fast flight speed, no need for a tail rotor, and energy saving, and the overall It seems to have a compact structure, making it suitable for use in places with limited space such as ships and ships.
Moreover, the T333’s twin rotors are made of composite materials, and the blades are DMH airfoils, which are strong and durable. The most important thing is that it adopts a bearingless structure, and its number of mechanical parts is only half of the traditional structure. The above improves power efficiency, system reliability and lifespan. This is a very advanced technology. It was only officially tested on the Z-11 helicopter in China in 2015. It is only used on experimental models abroad and has not yet been promoted.
The engines of the T333 unmanned helicopter are two piston engines with a rated power of 280 kilowatts (equivalent to 380 horsepower). Together with two rotors with a diameter of 10.2 meters, the maximum speed can reach 300 kilometers per hour. The climb rate is not less than 5 meters/second, the service ceiling is 6,000 meters, and the mission radius is 400 kilometers. With a load of 200 kilograms, its endurance is 30 hours. It can be said that its endurance is the longest among all helicopters in the world, including manned helicopters and unmanned helicopters. Moreover, the unmanned helicopter has excellent plateau take-off and landing performance and can take off and land at normal take-off weight in areas below 3,000 meters above sea level.
Illustration: The biggest feature of T333 is the use of ***-axis dual rotors. The rotor adopts a bearing-less structure, and its number of mechanical parts is only more than half of the traditional structure, which improves power efficiency and improves efficiency. Improved system reliability and lifespan
Application fields
Due to its superior performance and design features, the T333 unmanned helicopter has fault detection and health diagnosis functions, and can perform tasks all day and night. , achieving high-precision reconnaissance, intelligence and information collection, and can be widely used in various fields.
First, in the civilian field. This unmanned helicopter can be used for disaster rescue, line inspection, agricultural plant protection, geological survey, cargo transportation, etc.
Given that this unmanned helicopter has a powerful payload, flight speed and endurance, it can be equipped with various advanced electronic reconnaissance and information collection equipment for various civilian inspections and geological exploration, as well as It can be used for the transportation of materials and goods, and can even be equipped with various simple fire and disaster relief equipment. It is widely used in various rescue and disaster relief tasks, and has broad civilian prospects and potential.
Second, the military field. This unmanned helicopter can be used as a special platform for battlefield reconnaissance, island patrols, damage assessment, anti-submarine warfare, fire strikes, etc.
At the site of this direct expo, the aircraft did not carry or install any military equipment. It did not seem to have any military future, but it did have considerable transformation potential.
The internal space is huge and can be used to install various military electronic equipment; short wings are planned on both sides, which also provides the possibility for it to install various equipment and carry weapons and equipment in the future; even its belly, Hanging points are reserved. This will undoubtedly provide a broad modification space and platform for its future use in the military field.