What is the best four-axis descending speed? ——UAV flight safety from hot topics
In the past 10 days, the discussion on the safety of drone flight has continued to rise across the Internet. In particular, the issue of the descent speed of quadcopters has attracted widespread attention. This article combines the latest hot data and industry standards to analyze the best decline speed options for you.
1. Data statistics on recent hot topics
| Topic classification | heat index | Main discussion platform |
|---|---|---|
| Drone bombing accident | 92,000 | Weibo, Bilibili |
| Descending speed setting | 68,000 | Zhihu, drone forum |
| Beginner's Guide | 54,000 | Douyin, Kuaishou |
| Interpretation of regulatory updates | 41,000 | WeChat public account |
2. Analysis of four-axis descent speed standards
According to the latest "Safety Requirements for Civilian Unmanned Aircraft Systems" released by the Civil Aviation Administration of China, the recommended descent speeds of quadcopters in different scenarios are as follows:
| flight altitude | Open area (m/s) | Urban area(m/s) | Night flight (m/s) |
|---|---|---|---|
| 0-50 meters | 2.0-2.5 | 1.5-2.0 | 1.0-1.5 |
| 50-120 meters | 2.5-3.0 | 2.0-2.5 | 1.5-2.0 |
| More than 120 meters | 3.0-3.5 | 2.5-3.0 | 2.0-2.5 |
3. Best practice suggestions
1.Must-see for newbies:It is recommended to set the descent speed below 1.5m/s and turn on the "slow descent mode" during the first flight.
2.Environment adaptation:In a windy environment (wind speed ≥5m/s), it should be reduced by 0.5m/s from the standard value.
3.Load impact:For every 100g increase in load, the descent speed should be reduced by 0.2m/s (refer to DJI Mavic3 test data).
4. Comparison of measured data of popular models
| Model | Official recommendation (m/s) | Average value measured by users (m/s) | Safety threshold (m/s) |
|---|---|---|---|
| DJI Mini 4 Pro | 2.0 | 1.8-2.2 | ≤3.0 |
| Autel EVO Lite+ | 2.2 | 2.0-2.5 | ≤3.2 |
| FPV Drone | 3.5 | 3.0-4.0 | ≤5.0 |
5. Excerpts from expert opinions
Wang Jianjun, an expert from the Aircraft Owners and Pilots Association of China (AOPA), said: "More than 80% of bombing accidents occur during the descent stage, of which 47% were caused by improper speed settings. It is recommended that users follow the '3-2-1 principle': slow down by 30% for the last 30 meters, slow down by 50% for the last 20 meters, and control manually for the last 10 meters. "
6. Common misunderstandings among users
1. It is believed that the faster the descent speed, the more power is saved (actually it may cause the motor to overload)
2. Ignore the impact of temperature on battery performance (an additional 0.3m/s should be reduced at -10°C)
3. Do not adjust the default speed during automatic return (the difference in default value between different models can be up to 1.5m/s)
Conclusion:Based on industry standards and actual measured data,An ordinary quadcopter has the most balanced descent speed of about 2.0m/s in a normal environment., which can ensure both safety and efficiency. Be sure to read the instructions for your specific aircraft model before flying and attend regular safety training.
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