Weather Conditions

Heat

When operating in high-temperature environments, special attention must be given to the cooling and storage conditions of the DeltaQuad Evo:

• Airflow Requirement: If the ambient temperature exceeds 25°C for more than 5 minutes, the DeltaQuad Evo must be placed in an environment with at least 2 m/s airflow to prevent overheating of internal components.

• Direct Sunlight Exposure: The aircraft must not be exposed to direct sunlight for more than 5 minutes while idle. Prolonged exposure can cause excessive heating of internal systems. It is best practice to provide shade for the aircraft during pre-flight preparations. During flight, the Evo benefits from sufficient natural airflow to maintain stable operating temperatures, even in direct sunlight.

• Storage Conditions: Always store the Evo in a stable ambient temperature environment. Avoid moving the aircraft directly from cold to warm conditions, as this may lead to moisture condensation inside sensitive electronics.

Rain

Operations during rain are generally not recommended.

• Tolerance: The DeltaQuad Evo is designed to tolerate moderate rain (up to 7 mm/h) while in flight. However, the aircraft must not be launched during active rainfall.

• Airspeed Sensor Considerations: Exposure to rain during flight may result in airspeed sensor failure. In such cases, the onboard control system automatically switches to fixed-thrust flight mode, allowing the mission to continue safely. This mode increases power consumption and reduces maneuverability.

• Post-Flight Procedure After Rain: If the airspeed sensor is affected by moisture or has failed due to rain, the aircraft may not be relaunched within 24 hours of the incident. Before the next takeoff, the airspeed sensor must be verified to function correctly.

• Payload Considerations: ISR payloads may experience reduced visibility or performance degradation when exposed to rainfall.

Cold

Operation in cold conditions requires additional caution to prevent icing and control-surface obstruction.

• Temperature Range Restriction: The DeltaQuad Evo must not be flown between −5°C and +5°C in the presence of any atmospheric moisture (e.g., fog, drizzle, or light rain). Moisture in this temperature range can freeze instantly on the wings, fuselage, or propellers, leading to loss of lift and thrust.

Fog / Clouds

The DeltaQuad Evo must not be flown in fog, and flight through cloud layers should be minimized. These conditions can lead to unstable flight behavior due to turbulence and may cause moisture accumulation or ice formation on control surfaces.

Snow and mud

• Takeoff and Landing: The DeltaQuad Evo must not take off directly from snow or wet mud, as these materials can adhere to the landing gear. Once retracted, they may solidify or freeze, potentially preventing proper gear deployment during landing.

• Post-Landing Procedure: After operating in snowy or muddy environments, the landing gear must be thoroughly cleaned before subsequent missions.