HALO

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Aircraft Description

The concept behind HALO is to provide an optimal platform for airborne atmospheric science and Earth observation, a well-equipped flying laboratory that allows the scientists onboard to completely focus on their own experiment. A large set of jet aircraft candidates was investigated for its suitability. Finally the business jet aircraft G550 of Gulfstream was found to meet best the essential requirements of the HALO users.

Of course, the G550 underwent significant modifications, e.g. the insertion of openings, in order to maximise its capabilities as a research platform. The main strengths of the proposed HALO aircraft are its long range and endurance, high ceiling altitude and large instrument load capacities, which are not available in such combination on any other research aircraft in Europe. Thus, HALO provides the opportunity to carry out measurements in areas that can currently not be probed by other platforms. This includes nearly the full altitude range of the troposphere and lowermost stratosphere and remote parts of the Earth.

 

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HALO Aircraft - Basic description

The HALO aircraft is based on a commercial business jet, a Gulfstream G550. The following specifications are for a production aircraft and might slightly differ from the modified HALO aircraft.

  • Maximum Range
    12,501 km at Mach 0.8 | The actual range will also be affected by speed, weather, outfitting options and others.
  • Maximum Operating Mach Number
    Mach 0.885
  • Takeoff Distance (SL, ISA, MTOW)
    1,801 m
  • Landing Distance (SL, ISA, MLW)
    844 m
  • Maximum Cruise Altitude
    15,545 m
  • Maximum Takeoff Weight
    41,277 kg
  • Maximum Landing Weight
    34,156 kg
  • Maximum Zero Fuel Weight
    24,721 kg
  • Maximum Payload
    2,812 kg
  • Payload with Maximum Fuel
    816 kg
  • Rolls-Royce BR710 Engines
    2
  • Maximum Passengers
    19
  • Length
    29.4 m
  • Height
    7.9 m
  • Wingspan
    28.5 m
  • Cabin Length
    15.3 m
  • Cabin Height
    1.88 m
  • Cabin Width
    2.24 m
  • Cabin Volume
    47.3 m3

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HALO Aircraft - Modifications

  • Optical View ports
    2 Top View ports (diameter: 515 mm) | 2 Bottom View ports (diameter: 515mm) | 2 Side View ports
  • Top Fuselage Apertures
    10 x 10″x7″ | 2 x 10″x14″
  • Bottom Fuselage Apertures
    10 x 10″x7″ | 1 x 10″x14″
  • Hard point assembly for selected aperture plates
  • Nose boom
    1 | 3-D Wind field
  • Forward fuselage pads
    6 | Basis instrumentation
  • Unpressurized Nose compartment
    30kg, 24ltr
  • Cabin
    130kg | Stabilized Camera Platform
  • Cabin
    Seat rails | additional seat rails on the floor and on the cabin top
  • Hard point on top of the tail fin
    20kg
  • Hard points under the fuselage for Belly instrumentation pod
    350kg
  • Wing
    6
  • Winglet
    5kg
  • Experimental Power Supply
    55kW
  • Power distribution panels
    several locations inside the cabin
  • Communication
    VHF/AM | VHF/FM | UHF | HF | Intercom Cabin
  • Access to basic aircraft data
    ARINC | ASCB | Video (digital)

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