DOWNLOOKING VIEWPOINTS (LEFT SIDE) DOPPLER RADAR MOUNTS (TOP AND BOTTOM) LARGE APERTURES OR VIEWPORTS (TOP AND BOTTOM CENTERLINE) SATCOM ANTENNA DROP CHUTE FOR EXPENDABLES UNDERWING HARDPOINTS (2 EACH SIDE) BLANK WINDOW CANOE FAIRING DOWNLOOKING APERTURES (BOTTOM CENTERLINE) HEATED RADOME AIR MOTION PROBE FORWARD FUSELAGE HARDPOINTS (EACH SIDE) WEATHER RADAR SMALL OVERHEAD FUSELAGE APERTURES AND INLETS SATCOM ANTENNA FUSELAGE HARDPOINTS (TOP AND BOTTOM) MODIFICATIONS NOT SHOWN: WIRING FROM NOSE, WINGS AND TAIL INTO CABIN ELECTRICAL POWER DISTRIBUTION SYSTEM IN CABIN BLEED-AIR-DRIVEN VENTURIS FOR VACUUM SOURCES

HIAPER RESEARCH ELECTRICAL SYSTEM FEATURES  Capable of continuously providing up to 60 KVA  Requires no cabin floor space

 Incorporates an expandable main distribution and monitoring panel  Distributes regulated: 120/208vac, 3 , 400Hz 115vac, 1 , 400Hz 115vac, 1 , 60Hz 28Vdc 28Vdc De-ice power tied through “weight-on-wheels” switch ELECTRICAL … Cont’d

 Secondary distribution panels located strategically throughout the aircraft, i.e. CabinWingsTailNose ELECTRICAL … Cont’d

 Single-point ground  Automatic power shedding  Frequency converters and power receptacles compatible with the other NSF/NCAR aircraft ELECTRICAL … Cont’d

RESEARCH SIGNAL WIRING FEATURES  Capability to interconnect various aircraft locations to a central cabin location via signal distribution panels, i.e. Wingtips to cabin Wing-pods to cabin Tail to cabin Nose to cabin Inter-cabin, Etc.

SIGNAL WIRING … Cont’d  Wiring consists of, but not limited to: Twisted shielded pairTwinax 50 Ohm coax75 Ohm coax Multi-conductor cablesFiber optics High-speed network cabling

AIRCRAFT INTERCOMMUNICATIONS SYSTEMS  Maximum Flexibility  Every scientist/observer station must be able to talk to all other stations individually or in broadcast mode  Flight deck to scientist station intercom selection  Scientist station selectable communications via VHF, HF, FM, SATCOM for air to ground and ground to air communications  Ability to record observer “voice notes” at each scientist work station  Flight deck control over out going communication to avoid unintended communication with ATC

HIAPER VOICE AND DATA COMMUNICATIONS High speed global satellite communicationsHigh speed global satellite communications Weather Fax – ground to aircraftWeather Fax – ground to aircraft Multi-channel voice communication for separate flight deck and scientist communicationsMulti-channel voice communication for separate flight deck and scientist communications High speed data transfer at 56 Kbps or greater (air to ground and ground to air)High speed data transfer at 56 Kbps or greater (air to ground and ground to air) Connection to internet for real-time time data dissemination and monitoringConnection to internet for real-time time data dissemination and monitoring