NCAR ELECTRA instrumentation


NCAR ELECTRA

Characteristics
Wingspan 99 ft (30.2 m)
Length 105 ft (32.0 m)
Gross Weight 116,000 lb (52,600 kg), maximum
Performance:
Altitude 28,400 ft (8.66 km), normal operating
Range 1,500 nmi (2.78 km) @ 1,000 ft (304 m) altitude
1,900 nmi (3.50 km) @ 10,000 ft (3.04 km) altitude
2,400 nmi (4.45 km) @ 20,000 ft (6.10 km) cruise altitude
Endurance 8.5 hr, maximum, with IFR reserve
Speed 310 KTAS (160 m/s) @ typical cruise altitude
Payload 20,500 lbs, maximum
7,220 lbs with full fuel

NCAR Electra Instrumentation
Parameter Instrumentation
Meteorological
Temperatures Rosemount Type 102 Non-deiced Sensor, Rosemount Model 510BF Amplifier (TTRL) Left Radome Port
Rosemount Type 102 Non-deiced Sensor, Rosemount Model 510BF Amplifier (TTRR) Right Radome Port
Rosemount Type 102 Deiced Sensor, Rosemount Model 510BH Amplifier Forward Cabin Left Fuselage Port
Flow Angle Sensors Attack - Rosemount Model 1221F1VL Differential Pressure Transducer (ADIFR) Radome
Sideslip - Rosemount Model 1221F1VL Differential Pressure Transducer (BDIFR) Radome
Dew Point and Humidity General Eastern Model 1011B Dew Point Hygrometer (DPT) - Forward Cabin Top Right Fuselage Port
General Eastern Model 1011B Dew Point Hygrometer (DPB) - Forward Cabin Bottom Right Fuselage Port
NCAR Model LA-3 Lyman-Alpha Hygrometer (VLA)- Left Radome Mount
NCAR Model Crossflow Lyman-Alpha Hygrometer - (VLA1) - Right Radome Mount
Radiation
Visible Radiation RAF Modified Eppley Model PSP Pyranometers - (Upward looking (SWT), Downward Looking (SWB) - Centerline Mid-Fuselage
Infrared Radiation RAF Modified Eppley Model PIR Pyrgeometers - Upward looking (IRT), Downward looking (IRB) - Centerline Mid-Fuselage
Ultraviolet Radiation RAF Modified Eppley Model TUVR Pyranometers - Upward looking (UVT), Downward looking \(UVB) - Centerline Mid- Fuselage
Remote Surface Temperature RAF Modified, Temperature Controlled, Heimann Model KT19.85 Infrared Radiation Thermometer (RSTB) & (RSTB1) - Forward Baggage Compartment, Downward looking
Cloud Physics
Liquid Water Content PMS (CSIRO-King) Hot Wire Liquid Water Sensor (PLWC) - Left Pylon
PMS (CSIRO-King) Hot Wire Liquid Water Sensor (PLWC1) - Right Wing Tip
Icing Rate Rosemount Model 871FA Icing Rate Detector (RICE) - Right Pylon
Cloud Drop Spectrum Particle Measuring Systems Model 260X - 40- 620mm (260X) - Right Pylon
Particle Measuring Systems Model FSSP-100 - Selectable Ranges .6-47mm (FSSP 100) - Left Pylon
Particle Measuring Systems Model 2DC - 25- 800mm (2DC) Right Wing Tip
Hydrometeor Spectrum Particle Measuring Systems Model 2DP - 200- 6400mm (2DP) Left Wing Tip
Chemistry
Ozone RAF Modified TECO Ozone Monitor (TEO3)
Navigational
Aircraft Position, Velocity and Attitude Honeywell Model HG1095-AC03 Laseref SM Inertial Reference System.
Trimble TANS III Global Positioning System (GPS).
Static Pressures Rosemount Model 1501 Digital Pressure Transducer (PSFD) - Fuselage Port
Rosemount Model 1201F1 (PSW) - Left Wing Tip
Rosemount Model 1201F1 (PCAB) - Center Cabin
Dynamic Pressures Rosemount Model 1221F1VL (QCW) - Left Wing Tip
Rosemount Model 1221F1VL (QCF) - Nose
Rosemount Model 1221F1VL (QCR) - Radome
Geometric Altitude 0 - 762 m: Sperry Model AA-200 Radio Altimeter (HGM) - Aft Baggage Compartment
60 - 10,000 m: Stewart-Warner AN/APN-159 Radar Altimeter (HGME) - Aft Baggage Compartment
NCAR ELDORA/ASTRAIA radar characteristics

NCAR ELDORA/ASTRAIA radar characteristics
Parameter Value
Wavelength 3.2 cm
transmitted frequency 9.2-9.8 GHz
Beam width 1.8 deg
antenna gain 40 dB
polarization horizontal
sidelobes -35 dB
Beam tilt angle +-15-19 deg
antenna spin axis parallel to heading
antenna rotation rate 5-144 deg/sec
dwell time 7-50 ms
rotational sampling rate 1-2 deg
peak transmit power 35-50 kW
minimum detectable signal at 10km -12 dBZ
receiver bandwidth 0.5-8 MHz
pulse repetition frequency 2000-5000 /sec
unambiguous range 20-90 km
unambiguous velocity 13-110 m/s (dual-PRF)
number of transmitted frequency 4
pulse chip length 0.1-3 microsec
along track beam spacing >0.3 km
range resolution 0.0375-1.2 km

Updated : 5 Feb 1997
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