What is the principle of the reverse flight of the drone's wings?The two adjacent propellers of the multi-roter drone rotated in opposite directions. For example, the propellers M1 and M3 rotated counterclockwise, and the propellers M2 and M4 rotated clockwise. According to Newton's third law, the rotating blades would exert a reaction force (counterforce) on the motor, causing the motor to rotate in the opposite direction. In order to prevent the aircraft from spinning, the two adjacent propellers of the four propellers rotated in opposite directions. In this way, the counter-clockwise reaction force (anti-moment) generated by M2 and M4 and the clockwise reaction force (anti-moment) generated by M1 and M3 offset each other, and the aircraft body could remain stable. Furthermore, the multi-axis aircraft's front, back, left, right, or rotating flight was achieved by the speed control of multiple propellers. For example, when the M2 and M4 two clockwise rotating motor speeds increased, and the M1 and M3 two counterclockwise rotating motor speeds decreased, the aircraft could rotate on the spot.
<a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
What are the reasons for the reverse flight of the drone's wings?The reverse flight of the drone wings (presumably caused by the reverse rotation of the propeller) may be caused by the following reasons:
1. Control system failure: This may cause the drone to fail to receive and execute instructions correctly, causing the propeller to rotate in the wrong direction, resulting in a reverse flight.
2. "The problem with the sensor: If the sensor is unable to accurately sense the surrounding environment, it may mistakenly control the direction of rotation of the propeller, resulting in reverse flight.
3. Low battery: Low battery may cause the drone to be unable to maintain normal flight balance, affecting the control of the propeller, and thus reverse flight.
4. Unbalanced center of gravity or damaged flight components: This may cause the drone's flight attitude to be abnormal, affecting the working state of the propeller, causing it to fly in the opposite direction.
5. Wrong propeller installation: For example, if the propeller is installed upside down or the propeller speed is inconsistent, it may cause the drone to fly in the opposite direction.
<a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Diagram of the reverse flight principle of the drone's wingsFor a multi-roter drone, taking a quadrocopter as an example, the two adjacent propellers rotated in opposite directions. For example, the propellers M1 and M3 rotated counterclockwise, and the propellers M2 and M4 rotated clockwise. This was based on the principle that when flying, the counter-clockwise reaction force (reaction moment) generated by M2 and M4 and the clockwise reaction force (reaction moment) generated by M1 and M3 offset each other, thus maintaining the stability of the aircraft. When the two sets of wings rotated in opposite directions, the total power of the drone was zero. Angular power was dependent on the speed of the rotating blades. The value of angular power was similar to the value of linear power. It could be calculated by multiplying the angular velocity by the moment of inertia. The diagram was usually presented as follows: the triangular red arrow indicated the direction of the aircraft's nose, the direction of rotation of the propellers M1 and M3 was counterclockwise, and the direction of rotation of the propellers M2 and M4 was clockwise. When describing the principle of the drone's forward and backward flight and in-place rotation, it also involved the layout of the direction of rotation of the helicopter. For example, when rotating on the spot, it could be achieved by increasing the speed of the two clockwise rotating motor M2 and M4, and reducing the speed of the two counterclockwise rotating motor M1 and M3, using the reverse moment. During vertical take-off and landing, the four rotators accelerated the rotation at the same time to increase the lift of the aircraft, while reducing the speed of the aircraft. During flight, the speed of multiple propellers could be controlled to achieve front, back, left, right or rotating flight.
<a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Drone cameraIn photography, drone footage was a special concept related to the angle of photography. The drone lens could be used to shoot from above and obtain images from the air. It could create unique visual effects, such as aerial view, aerial landscape, etc. It was suitable for displaying vast scenes, such as natural scenery, city skyline, etc., to highlight the grandeur and magnificence of the scene and create an open visual effect.
<a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Is Drone a true story?It's hard to say for sure. Sometimes stories labeled as such might draw inspiration from real events but have fictional elements added in.
3 answers
2024-09-28 12:10
Fisheye lens droneFisheye lenses could be used in drones. For example, LAOWa has a 4mm F2.8 210° circular fun fisheye lens that can be used for drone aerial photography, suitable for a variety of camera mounts such as Fuji micro-single X mount, Sony micro-single E mount, etc.; Chuangan Optoelectronics developed a 0.7mm, F2.8, 210° M8 fisheye lens, which was successfully applied to the visual obstacle avoidance of drones. By installing this lens in four directions, it could achieve no dead angle image acquisition. The image could be processed to give movement instructions to bypass obstacles. It could cruise automatically with the satellite positioning system and cooperate with the ground station for image big data analysis.
<a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
Drone photography photosHere are some ways to view drone photos:
- On December 16, 2014, the Dronestagr.am website collected and displayed many aerial images taken by drones. Some drone photos can be seen on the website.
- The results of the 2018 Drone Awards were announced. The competition consisted of six categories: abstract, nature, people, sports, wild animals, and cities. There was also a photo of the year. There were many wonderful drone photography works in each category. You can check the photos by checking the relevant reports of the competition.
- Enter the keyword " drone photography " in the search engine to get many drone photography photos.
<a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
6 yuan mini droneAlthough it was mentioned that there was a 6-yuan mini drone, from the description, this kind of low-cost drone might be difficult to obtain. For example, a one-yuan drone might need to be purchased in order to have a very low chance of obtaining it. There was no more detailed information about the 6-yuan mini drone.
The novel " Hundred Years of Spaceship " is equally exciting. Everyone is welcome to click and read it!
Lego Mini DroneThere was information about various small Lego drones. There were reconnaissance bipedal drones that could be built with Lego bricks, and a Lego drone built by Ed Scott that appeared on Kickstarter. It provided complete Lego components, flight and electronic equipment, and assembly instructions. It was light and controlled by an APM flight controller, equipped with a four-wing propeller and an external portable camera. The crowdfunding price was about 1220 yuan. In addition, the summer camp hosted by Zhengguo Middle School had a Litebee drone Lego building block assembly course.
"Transformers: Origins" was not enough. Everyone, please click to read the novel!
Flying Drone AcademyIn November 2014, the Flying Unmanned Aerial Vehicle Training Academy was awarded the first batch of civil unmanned aerial vehicle system training institution license issued by the China Association of Aerial Vehicle Owner and Pilots (China Association of Aerial Vehicle Owner and Pilots) in South China. The Flying Unmanned Aerial Vehicle Training Academy was established to recruit students from all walks of life. It currently has 13 teaching points, including Foshan (Nanhai/Chancheng), Guangzhou, Shenzhen1, Kunming1, Xi'an, Wuhan1, Yinchuan, Xining, Yantai1, Chengdu1, Zhengzhou, Hefe1, Ningbo1, etc., covering most of the country. The college offered China's CAAC multi-rotorcraft (in-sight pilot, over-the-horizon pilot, instructor), fixed equipment (in-sight pilot, over-the-horizon pilot), agricultural plant protection, power line inspection and other drone courses.
The college provides pilot training for drone owners and multi-rotorcraft professional skills certification training for pilots who are interested in the industry. It has sent more than 1000 legal drone pilots to the society and has gained the trust of the industry with high-quality training results. The company was equipped with dozens of senior drone instructors and many teaching assistants from China's CaAC. It was one of the drone training institutions with the largest number of professional instructors in the country.
The teaching features of the Flying Unmanned Aerial Vehicle Academy included: first, systematic theoretical teaching, which combined theoretical knowledge such as aviation regulations, meteorology, aeromechanics, multi-rotorcraft system composition, flight principles, and mission planning into a comprehensive knowledge system; second, practical assembly and maintenance, which was different from traditional exam-oriented training. It offered courses on drone assembly, tuning, and maintenance. The third was standardized practical training. The practical training courses were divided into simulated flight training and real machine practical training. They would also be grouped according to the students 'driving level and give targeted guidance. The fourth was to set up industry application elective courses, including drone power line inspection, drone aerial photography and other courses to expand the students' skills and skills and meet the needs of the industry to promote employment.
"A Short History of the Future: Legends of the Intelligent Era" was equally exciting. Everyone was welcome to click and read it!