Dimensions: Length: 15.04 m; Height: 4.86 m; Wingspan: 16.97 m; Flying performances: Speed: Min speed: 40 m/s Max speed: 100 m/s Usual speed during measurements: 85 m/s Usual speed during transit flights: 100 m/s Ascent rate: 5 m/s Altitude: (1 ft = 0.31 m) Min altitude: Above sea: 200 ft Above ground: 500 ft Max ceiling: 25000 ft Usual ceiling during measurements: 20000 ft Ceiling limitations: Data Sheet LBA (German Aviation Authority) Nonpressurized Airframe, FAR Standard due to Human Factor reason Payload: Empty weight: 4002 kg Max take-off weight: 6575 kg Max payload: 1233 kg Max scientific payload: 1157 kg ... (X-coordinate of 2nd point) Usual scientific payload during measurements: 600 kg Scientific payload for max endurance: 81 kg ... (X-coordinate of 1st point) Endurance: Max endurance: 7 h (at min scientific payload and max fuel) (Y-coordinate of 1st point) Endurance at max scientific payload: 4 h ... (Y-coordinate of 2nd point) Range: Max range: 2360 km (at min scientific payload and max fuel) Range at max scientific payload: 440 km Other: Weather conditions limitations: VFR, IFR, certified for known Icing-Condition Take-off runway length: 730 m Engines: Honeywell TPE 331-5A-252 D with 579 kW (776 SHP) take-off performance; Avionics: Universal UNS 1L,MFD Avidyne EX-500 Honeywell Laserref, Inertial System Colour Weather Radar WXR 270 2 VOR/ILS/DME,ADF, 2 x XPDR (Mode-S/ELS) HF with SELCAL, 2x VHF (8,33/25 kHz), ACAS II w. RA, Crew and scientists on board: Crew (pilots + operators): VFR 1 pilot, IFR 2 pilots; Seats available for scientists: 19 (pax configuration) Cabin: Length: 6.30m Width: 1.34 m Height: 1.55 m Apertures: Main door : Width : 1.92 m Height : 1.55 m; Cabin pressurized: None. This allows very large openings in the structure. Aircraft modifications: Nose boom: none Windows: A bubble window with operator location and navigation telescope at the right front-side of the cabin. Openings: 2 openings in the cabin floor which can be opened and closed during flight : - 2060 x 515 mm (spant 19A to 23) - 475 mm diameter (spant 22 to 23) Coverable openings in the cabin roof : 400 mm diameter between fuselage-station 22 and 23 ; 150 mm diameter each between station 12A and 13B (2x) and 21 and 22 (1x). Hard points: 6 hardpoints in the middle of the fuselage floor for external loads up to 200 kg. It is planned to install a radom for the protection of sensors. Each fuselage side provides 3 hardpoint pairs below the cockpit area for a load of max. 50 kg (e.g. SLAR). Below both wings, not within the area of the propeller, there are hardpoints for 100 kg each. Inlets: 4 in total. Additionnal systems: Additional mounting rails for measuring equipment in the cabin. Tubes in the wing and the fuselage for measuring and supply lines. Breathing oxygen system for a max. of 5 persons for flights lasting up to 5 hours in a flight altitude of up to 25000 ft. Acquisition systems: Onboard data recording system. Telemetrie-link to a ground station on development. Electrical power: Aircraft total electrical power (kW): DC 18-30 Volt AC 110-120 V GEN 250 A Electrical power (kW) and voltages (V) available for scientists: DC 28 V - 8.4 kW (max)Permanent installed 2kW / 220 V / 50 Hz convertor