China Education Equipment Purchasing Network News: According to recent news from the Ministry of Science and Technology, the Ministry of Knowledge Economy and the Korea Aerospace Research Institute have announced the "smart unmanned aircraft" produced in South Korea at the Happy Aviation Center in Jeollanam-do. The aircraft is 5 meters long and 7 meters wide, with a maximum speed of 500 kilometers per hour and a battery life of 5 hours.
South Korea's "Central Daily" reported that "intelligent unmanned aircraft" is a combination of helicopter and aircraft that can take off and land freely like a helicopter, but can also move quickly like an aircraft. The propellers installed on the two wings fly upward like a helicopter when they take off and land, and tilt horizontally with the wing when they travel, like a propeller airplane.
According to reports, South Korea is the second country in the world to successfully master tilt-rotor technology after the United States. According to the plan, after completing various tests such as flight performance, the "intelligent unmanned aircraft" will enter the practical stage.
Outdoor sunshade umbrella is a common outdoor product used to block sunlight and rain, providing people with a comfortable outdoor resting environment. According to different functions and materials, outdoor sunshades can be divided into various types, which will be classified and introduced below.
Umbrella: Mainly used to block sunlight, prevent ultraviolet radiation, and protect people's skin from harm. Umbrellas are generally made of materials with anti ultraviolet coatings, which can effectively block the penetration of ultraviolet rays.
1. Classified by material
1. Polyester umbrella cloth: Polyester is a synthetic fiber material with good waterproof performance and durability. Polyester umbrella fabric is often used for umbrella protection and is suitable for various outdoor environments.
2. Nylon umbrella cloth: Nylon is a synthetic fiber material that is lightweight, wear-resistant, and waterproof. Nylon umbrella cloth is often used for rain and wind umbrellas, and is suitable for outdoor sports and travel.
3. UV resistant coating: Some outdoor sunshades use special UV resistant coatings, which can effectively block the penetration of ultraviolet rays and protect people's skin from harm.
2. Sort by size
1. Small umbrella: The diameter of the umbrella surface is generally below 60 centimeters, suitable for single person use or small spaces.
2. Medium Umbrella: The diameter of the umbrella surface is between 60 centimeters and 80 centimeters, suitable for 2-3 people to use.
3. Large Umbrella: Umbrella with a diameter of over 80 centimeters, suitable for use by multiple people or in larger spaces.
Sunshade,Beach Umbrella,Garden Sunshade,Sandy Shade
Foshan Shengshi Zhihui Technology Co., Ltd. , https://www.zhhotelfurniture.com