UG21 4-Hour VTOL Fixed Wing Drone for Mapping, Inspection and Surveillance

Q1. What is the UG21 VTOL fixed wing drone used for?

A1. The UG21 is designed for long-endurance aerial missions such as aerial mapping, land surveying, infrastructure inspection, corridor patrol, security surveillance, environmental monitoring, emergency response and disaster assessment.

Q2. Is the UG21 a VTOL drone or a fixed wing drone?

A2. The UG21 is a VTOL fixed wing drone. It can take off and land vertically like a multirotor drone, then transition into fixed wing cruise flight for efficient long-distance operation.

Q3. Does the UG21 need a runway for take-off and landing?

A3. No. The UG21 supports vertical take-off and landing, so it does not require a runway, catapult launcher or recovery net. This makes it suitable for remote areas, mountains, farms, industrial sites and infrastructure corridors.

Q4. What is the maximum flight time of the UG21?

A4. The UG21 provides up to 240 minutes of no-load flight time. Actual endurance may vary depending on payload weight, wind conditions, flight route, altitude and operating environment.

Q5. What is the maximum payload capacity of the UG21?

A5. The UG21 supports a maximum payload of 2.5kg, allowing it to carry suitable mission equipment such as mapping cameras, lightweight gimbals, inspection sensors or monitoring devices.

Q6. What is the cruise speed of the UG21?

A6. The UG21 has a cruise speed of 20m/s, making it suitable for wide-area flight missions and long-distance inspection routes.

Q7. What is the maximum service ceiling of the UG21?

A7. The UG21 has a maximum service ceiling of 4800m, supporting operation in many high-altitude and complex terrain environments.

Q8. What wind resistance does the UG21 support?

A8. The UG21 supports Level 6 wind resistance in multirotor mode and Level 7 wind resistance in fixed wing mode, helping improve stability during outdoor field operations.

Q9. What protection rating does the UG21 have?

A9. The UG21 has an IP54 protection rating, offering protection against dust and water splashes for professional outdoor UAV missions.

Q10. What industries are suitable for the UG21 VTOL drone?

A10. The UG21 is suitable for mapping companies, inspection service providers, security teams, government project suppliers, environmental monitoring teams, UAV system integrators and drone distributors.

Q11. Can the UG21 be used for power line and pipeline inspection?

A11. Yes. The UG21 is suitable for long linear inspection missions such as power lines, pipelines, highways, railways, border routes and remote infrastructure corridors.

Q12. What is included in the UG21 package?

A12. A typical UG21 package may include the VTOL aircraft, TATTU 6S 25000mAh battery, T12 remote controller, dedicated transport case and battery charger. Final package contents should be confirmed before purchase based on the selected configuration.

General Care Instructions for Drones and Drone Accessories

1. Battery Care

• Charging: Always use the recommended charger for your drone's battery. Avoid overcharging—once the battery is fully charged, unplug it to avoid damaging the battery.
  
• Storage: When not in use, store the battery in a cool, dry place. Avoid exposing the battery to extreme temperatures (below 0°C or above 40°C).
  
• Maintenance: Periodically check the battery’s health and charge cycles. Replace the battery after 300-500 charge cycles depending on its condition.
  

2. Cleaning

• Exterior Cleaning: Use a soft cloth to clean the drone’s body and propellers. Avoid using any abrasive materials that could scratch or damage the surface.
  
• Lens & Camera: Clean the camera lens and sensors with a microfiber cloth to remove dust and smudges. Never use chemical cleaners that might damage the lens coating.
  
• Propellers: Inspect and clean the propellers regularly, especially after use in dusty or dirty environments.
  

3. Storage

• Safe Storage: When storing your drone, ensure it’s kept in a safe, dry place where it won't be exposed to extreme temperatures, humidity, or direct sunlight.
  
• Transport: Use a protective case when transporting the drone to prevent damage. Never leave your drone exposed to the elements, especially in hot or humid conditions.
  

4. Pre-Flight Checks

• Battery: Ensure the battery is fully charged before flying.
  
• Propellers: Check that the propellers are secure and free from cracks or other damage.
  
• GPS and Sensors: Ensure the drone's GPS and other sensors are functioning properly before takeoff. Perform a quick calibration if necessary.
  

5. Post-Flight Care

• Cool Down: Allow the drone to cool down before packing it away. This is particularly important if you’ve been flying for an extended period.
  
• Post-Flight Cleaning: After each flight, clean the drone and check for any damage or wear. Inspect the propellers and motors for any debris or dirt that might affect performance.
  

6. Maintenance & Repairs

• Repairs: For any mechanical issues, contact a certified repair center or technician. Avoid attempting complex repairs yourself unless you're trained.
  
• Firmware Updates: Regularly check for firmware updates for your drone to ensure it has the latest features and safety improvements.
  

7. Environmental Considerations

• Weather Conditions: Avoid flying your drone in strong winds, heavy rain, or extreme temperatures. Always check the weather conditions before flying.
  
• Flying Location: Always ensure that you are flying in an open area, free from obstacles like trees, power lines, and buildings. Check local regulations for any restricted airspaces.

8. Safety Guidelines

This section provides additional safety information to help improve drone operation reliability and reduce flight risks.

• Pre-Flight Awareness: Always review weather, terrain, airspace, battery condition, payload status, and communication link before each flight.
• Safe Operation: Avoid aggressive maneuvers, unnecessary hovering, and long operation in crosswind conditions.
• Emergency Response: If abnormal vibration, power loss, GPS loss, low voltage, strong wind, or sensor error occurs, return or land the drone as soon as possible.
• Operator Responsibility: Operators should follow local aviation regulations and manufacturer instructions at all times.

9. General Weather Considerations

Weather conditions can strongly affect drone flight safety, especially for VTOL fixed wing drones operating over long routes or complex terrain.

• Heavy Rain: Strong rainfall may come with lightning, hail, wind shear, and turbulence. These conditions can reduce aerodynamic performance, increase motor load, and may damage the propulsion system.
• Icing: Aircraft icing may occur as clear ice, rime ice, or frost. Light icing can reduce performance and flight time. If moderate or severe icing occurs, change route or land immediately.
• Low Visibility: Do not fly when effective visibility at the operation site is too poor.
• Obstructed Visual Range: If visual range becomes restricted during flight, change route or land as soon as possible to avoid unnecessary risk.
• Mountain Airflow: Mountain airflow can create turbulence and unstable air. Increase route safety altitude when operating in mountainous areas.
• Wind Shear: Wind direction may change quickly in mountains, valleys, and highland areas. Pay close attention to wind conditions during take-off, route flight, and landing.

10. Battery Energy Saving Procedure

Proper flight planning and battery management can help improve endurance and reduce unnecessary power consumption.

• Firmware Check: Make sure the flight controller software is updated to the latest recommended version.
• Parameter Adjustment: Before take-off, adjust aircraft parameters according to take-off weight and follow the manufacturer’s recommended route speed.
• Reduce Aggressive Maneuvers: Avoid rapid turns, sharp climbs, unnecessary hovering, and extended crosswind operation.
• Limit High-Altitude Operation: Reduce operating time at high altitude whenever possible.
• Cold Region Operation: Use a battery temperature management system when operating in cold or high-altitude regions.

11. High-Altitude Operation

High-altitude operation generally refers to flight at 8,000 ft / 2,438 m or above. At high altitude, the propulsion system works under greater load, which may increase the risk of motor or ESC overload.

• Operating Recommendation: Keep the aircraft within the safe altitude range recommended by the manufacturer.
• Payload Reduction: If high-altitude operation is required, reduce payload weight and operating time.
• Flight Control: Reduce climb and descent rates, increase turn radius, and avoid aggressive maneuvers.
• Power Loss: Both electric and fuel-powered systems can experience power loss due to thinner air and reduced air density. This may reduce maximum take-off weight and standard endurance.
• Propeller Selection: Use the appropriate propeller model for the operating altitude. Contact the drone manufacturer for specific technical parameters.
• Electronic Equipment: Some electronic components may be more likely to experience corona discharge or abnormal electrical behavior at high altitude. Inspect electronic systems carefully before flight.
• Airspeed Calibration: True airspeed and indicated airspeed can differ significantly at high altitude. At 2,000 m, the difference may be about 10%; at 4,000 m, about 20%; and at 5,000 m, about 30%. Use calibrated airspeed settings for high-altitude operation.
• Weather and Terrain: Highland areas often have strong winds, turbulence, wind shear, temperature differences, and rapidly changing local weather. Pay special attention during take-off and landing.
• Communication Link: Mountainous terrain, valleys, and cliffs may cause multipath interference and reduce communication distance or link quality.
• Low Temperature: High-altitude regions often have lower temperatures. Use a heating system when required. Do not fly in extremely low-temperature conditions.
• Operator Condition: Operators may experience slower reaction speed due to lower oxygen and cold weather. Arrange personnel properly during high-altitude missions.

12. Cold Weather Operation

Cold weather mainly affects drone endurance and battery discharge performance. When the operating temperature is below 10°C, flight time may decrease significantly, and battery voltage may drop suddenly without clear warning.

• Flight Limitation: Reduce or avoid flight operations in low-temperature conditions when battery performance is not stable.
• Battery Insulation: Adding sponge or foam between the battery and aircraft body can help improve battery discharge performance in cold conditions.
• Battery Transport: Use an insulated explosion-proof battery box when transporting batteries in cold weather.
• Sensor Check: During airspeed calibration, check whether the pressure sensor and altitude sensor are operating normally.
• Battery Heating Option: Use the battery heating module provided or recommended by the manufacturer when required.
• Extreme Cold Warning: Do not operate the aircraft in extremely low-temperature conditions.

13. Solid-State Battery Operation Notes

Solid-state batteries may increase aircraft endurance, but operators must understand the operational limitations before use.

• Power Configuration: The power configuration may be different from the standard setup and may not be compatible with standard flight batteries. Contact the manufacturer before use.
• Altitude Limit: Operate below 1,500 m unless otherwise confirmed by the manufacturer.
• Payload Limit: Payload should not exceed 1 kg unless otherwise confirmed.
• Test Environment: Manual endurance data is usually tested in an environment above 15°C.
• Wind Limit: Take-off and landing should be performed when wind speed is below Level 3.

14. Terms and Definitions

The following terms and definitions apply to drone operation, maintenance, and safety guidance.

• Drone / UAV: A powered, unmanned, reusable aircraft that can be controlled remotely, semi-autonomously, or autonomously.
• Safety: The condition of being free from accidents, hazards, and threats.
• GPS Signal Loss: Loss of GPS positioning caused by interference, magnetic disturbance, signal blockage, or weak satellite reception.
• In-Flight Motor Stop: A condition where the motor or engine stops operating during flight.
• Flight Controller: The control system of the drone, often considered the “brain” of the aircraft. It includes gyroscopes, accelerometers, compass sensors, GPS modules, and control circuits to maintain flight attitude and stability.
• Channel: A common remote controller term. Each channel corresponds to one control signal used to command a specific aircraft action.
• 2S / 3S / 4S Battery: “S” refers to the number of battery cells connected in series. A standard lithium battery cell has a nominal voltage of 3.7V and full charge voltage of 4.2V. A high-voltage lithium battery cell usually has a nominal voltage of 3.8V and full charge voltage of 4.35V.
• Battery C Rating: The C rating represents battery discharge capability. For example, if a 10Ah battery is rated at 5C, its maximum discharge current is 5 × 10A = 50A.

Shipping Policy

1. Processing Time

• Orders are typically processed within 1-2 business days of receipt. If there are any delays due to high demand or inventory issues, we will notify you as soon as possible.

2. Shipping Methods

• We offer several shipping options based on your location. The available methods are:
  Standard Shipping (5-7 business days)
  Expedited Shipping (2-3 business days)
  Express Shipping (Next-day delivery)

Shipping times may vary depending on the destination and availability of the product.

3. Shipping Fees

• Shipping fees are calculated at checkout based on your order's weight, size, and destination. You will be provided with a shipping quote before finalizing your purchase.
• We offer free standard shipping on orders over a certain amount (e.g., $1000) for specific regions.

4. International Shipping

• We ship globally to most countries. For international shipments, please note that customs duties, taxes, and fees are the responsibility of the customer and will be charged by the local authorities upon delivery.
• Delivery times may vary based on the destination.

5. Order Tracking

• Once your order has shipped, you will receive a tracking number by email. You can track the status of your shipment using the tracking link provided.

6. Delivery Issues

• If your package is delayed or lost in transit, please contact our customer service team immediately. We will work with the shipping carrier to resolve any delivery issues.

Return & Refund Policy

1. Returns

• We want you to be completely satisfied with your purchase. If you are not satisfied, you can return most new, unused items within 30 days of delivery for a full refund or exchange.
• To initiate a return, please contact us at returns@uniteduav.com with your order number and reason for the return. We will guide you through the return process.

2. Return Conditions

• Items must be returned in their original condition (unused, undamaged, and in the original packaging) to be eligible for a refund or exchange.
• Non-returnable items include:
  Customized or personalized items
  Opened or used drone batteries
  Sale items or items marked as non-returnable

3. Return Shipping Fees

• Return shipping is the responsibility of the customer unless the item is defective or was sent in error. We recommend using a trackable shipping service for returns to ensure your items are returned safely.
• Free Return Shipping: We offer free return shipping on defective products or if you receive the wrong item.

4. Refund Process

• Once your returned item is received and inspected, we will notify you of the approval or rejection of your refund.
• Refunds will be processed to your original method of payment within 7-10 business days. Depending on your bank or credit card provider, it may take additional time for the refund to reflect in your account.

5. Exchanges

• If you would like to exchange your item for a different size, color, or model, please contact us with your request. If the exchange is approved, we will send out the new item and provide instructions for returning the original product.

6. Damaged or Defective Items

If you receive a damaged or defective item, please contact us within 7 days of receipt. We will arrange for a replacement or refund, including free return shipping for defective items.

For more details, please review our Shipping Policy.