Fraunhofer Institute of Optronics, System Technologies and Image Exploitation IOSB

Investigation of optical turbulence from an unmanned aerial system

Investigation of optical turbulence from an unmanned aerial system

Investigation of optical turbulence from an unmanned aerial system

Challenge // Motivation

 

Challenge:

  • turbulence limits optical sensor performance
  • optical turbulence is depending on height, surface, climate
  • need for over-water measurements
  • fixed measurements with towers are not flexible
  • regulation and permission procedure working with UAS
  • battery capacity and weight limits flight time

Motivation:

  • set up a flexible System
  • easy measurements over area of interest
  • easy measurements of vertical and horizontal profiles

UAS SIG-1 First System Concept with Gill Sonic Sensor

UAS SIG-2 with Sonic Sensor »TriSonica«

Technical Data:

  • length: 1,300 mm width: 1,000 mm height: 400 mm
  • tare weight: 4,200 g
  • max payload: 4,500 g
  • 12 engines / rotor (8+4)
  • max flight time 15 minutes

Advantages:

  • flexible mobile platform for different instrumentation
  • safe mission also when 2 rotors not working
  • flexible measurement flight box
  • remote controlled or mission planned flight modus
 

Technical Data:

  • quadrocopter with X configuration
  • length: 360 mm width: 360 mm height: 250 mm without sensors
  • flight speed horizontal max 15 m/s // 54 km/h
  • flight speed vertical max 9 m/s // 32 km/h
  • tare weight: 950 g (without battery)
  • max payload: 2,000 g
  • 4 brushless DC engines // non redundance
  • 12 inch propellers
  • designed for wind speed up to 8 m/s // 30 km/h
  • max flight time 25 minutes
  • remote controlled or mission planned flight modus

 

Sonic Sensor »TriSonica«

 

Technical Data:

  • 3 Dimensional Sonic Anemometer
  • max data output rate: 10 Hz
  • length: 95 mm width: 95 mm height: 55 mm
  • weight: 90 g

    Including sensors for:
  • pitch/roll
  • air pressure
  • relative humidity
  • temperature
  • RS232 pocket data logger