2. Operating Limitations

This Section includes operating limitations which are necessary for the safe operation of the Sigma25G, motors, standard equipment, and standard payload.

All limitations given in this Section must be strictly complied with for all operations.

2.1 Airspeed Limitations

Operating Maneuvring Speed	8 m/s
Maximum Structural Cruising Speed	10 m/s
Never Exceed Speed	12 m/s

Flight speeds and flight envelope are limited by the flight controller. Wind speeds may affect these values.

2.2 Mass/Centre of Gravity Limits

Exceeding weight limitations may lead to overloading of the SIGMA25G structure and cause loss of control of the SIGMA25G and/or significant structural damage.

Empty Weight - Without Flight Battery or Payload	1300 grams
Nominal Take-Off Weight - with Standard Flight Battery, Standard Payload	2100 grams
Maximum Take-Off Weight	2300 grams

The reference datum for determining the longitudinal Center of Gravity is located below; given the lateral symmetry of the SIGMA25G, the reference line for the lateral Centre of Gravity is located on the symmetry axis.

Center of Gravity from Top View

Exceeding the center of gravity limitations reduces the efficiency and stability of the SIGMA25G.

2.3 Flight and Maneuver Limitations

Approved Types of Batteries	Li- ion 21700
Minimum Operation Voltage	13.5
Recommended Operation Voltage	16.7V
Maximum Number of Charge Cycles	200

2.4 Weather Limitations

Do not fly SIGMA25G in temperatures

>45°C (113°F) or

<-5°C (23°F)

Do not fly SIGMA25G in wind speeds

>8 m/s

Do not fly SIGMA25G in the following weather conditions:

Snow, Rain, Fog

2.5 Range and Control Link Limitations

Max. operational Range	5 km / 3.1 miles (unobstructed, VLOS, no interferences)

Attempting to fly the aircraft beyond any of the listed limitations may result in aircraft failure, and hazardous situations, including resulting in personal injury and damage to property.