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Tim Rahmes The Boeing Company. Turbulence Workshop Perspective from Boeing. Agenda. Needs, benefits and vision Industry standards development Value of flight testing Uplink Downlink Integration Summary. Needs, benefits and vision.

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Tim Rahmes

The Boeing Company

Turbulence Workshop

Perspective from Boeing



  • Needs, benefits and vision
  • Industry standards development
  • Value of flight testing
    • Uplink
    • Downlink
    • Integration
  • Summary
from rtca do 340 concept of use for meteorological and aeronautical information
From RTCA DO-340: Concept of Use for Meteorological and Aeronautical Information

Uplinked AIS

Uplinked Weather


  • Increase situational awareness
  • Reduced fuel & emissions
  • On-time performance
  • Passenger ride comfort
  • Reduced injuries
  • Reduced maintenance
  • Reduced pilot/controller workload

Weather Displays

  • Convective weather
  • Turbulence avoidance/alerts
  • Winds/temps aloft
  • Volcanic ash
  • Icing
  • Lightning
  • RVR, runway conditions
  • etc.

Graphical and Database Needs

  • NOTAMs (e.g. TFRs, SAA)
  • FM, AMM, EGPWS, EFB, etc.
  • NextGen Compatibility
  • Applicable to time-limited non-weather constraints (e.g., traffic congestion)

Benefits w/observations advancements:

  • Better weather forecasts
  • Capacity increases likely
  • Atmospheric modeling contribution
  • Environmental constraint mitigation

Increased use of aircraft as sensor platform

  • AMDAR parameters (e.g., wind, T, EDR turbulence, water vapor, icing)
  • Future needs (e.g., HIWC needs)
  • Near real time data needs of sensed data in flight deck (e.g., wake turbulence, wind-shear events)

Potential real-time sharing of in situ observations

  • To flight deck (e.g., wake turbulence, windshear events)

Crosslink Weather

Downlink Weather

the vision turbulence in air transport
The Vision (Turbulence in Air Transport)


ATC communicates with aircraft via voice, although ACARS and FANS / CPDLC have made significant inroads in recent years

Dispatch use of ACARS is airline dependent (both uplink and downlink meteorological/turbulence)

Future key differences

Near-term: Broadband links will be used to communicate strategic weather data to flight crews. New information management architectures will be used.

Mid-term: Increased aircraft wx/turbulence observations, enabling improved forecasts and nowcasts. Continued adoption of onboard weather radar for tactical planning.

Longer-term: Data linked AIS & MET information may be used for “controlling, safety-critical functions” -- not just for “advisory” purposes

New Data Links

Paper PIB

Today’s ACARS

need beyond ellrod integrate multiple inferences into a combined forecast nowcast product
Need: Beyond Ellrod. Integrate multiple inferences into a combined forecast / nowcast product
  • Mountain waves

Tropopause folds


  • Desire is an integrated display of turbulence:
  • Thermal
  • Mechanical
  • Shear

Transverse bands

Desire a combined inference

industry standards activity rtca sc 206 etc
Industry Standards Activity (RTCA SC-206, etc.)

MASPS, MOPS, TSOs (Systems)


DO-252 update (w/EDR Appendix)


OSED, DO-339


ConUse, DO-340

DO-324 (SPR)

TSO-C157a (Flight Info Svcs h/w)






AC 00-45G (WxSvcs, training)

SAE G10W Symbology ARP

ARINC 620-7

Update w/EDR

AC 120-76B (EFB Cert Guidelines)

Operationally Approved

  • AC 00-63A: Flight Info Svcs
  • 8900.1 Update

Boeing ecoDemonstrator flight test program


Accelerate technology for more fuel efficient, cleaner, quieter, advanced materials

Faster innovation to application-ready technologies

Work together, industry, suppliers and government

Learn prior to critical path

Design, build, integrate, fly (annually)

Federal Aviation Administration

Continuous Lower Energy and Emissions and Noise


737 Platform

787 Platform

Accelerating technology to improve Environmental Performance

boeing eco demonstrator uplink efforts
Boeing ecoDemonstrator “uplink” efforts
  • On the 737 test platform, we learned:
  • Airlines desire applications for portable electronic devices such as graphical turbulence
  • Some mobile devices can work well as a Class 2 EFB, integrated with aircraft information
  • A suite of capabilities is enabled by a secure network file server with wireless capability:
    • Provides information from aircraft systems
    • Global, off-board broadband connectivity for near-real-time information
  • On the 787 test platform, we plan:
  • Continued maturation of charting, uplink weather/turbulence, rerouting and mitigation concepts
  • Efficiency gains through several mobile applications integrated with both onboard and offboard connectivity
boeing eco demonstrator downlink efforts
Boeing ecoDemonstrator “downlink” efforts
  • On the 737 test platform, we learned:
  • Options for securely connected aircraft to ground by onboard networking system and off-board broadband connectivity.
  • Evolving architectures may host applications such as aircraft health management, flight data-recorder streaming, downlink weather / EDR and quick-access recorder data.
  • Operating systems that are more flexible, easier / cheaper to update.
  • Off-board broadband connectivity for near-real-time reporting of meteorological observations
  • Plans for 2013 (787-8):
  • Adapting EDR algorithm to 787 aircraft
  • Other efficiency gains through several applications integrated with both onboard and offboard connectivity
  • Continued prototyping of sensor integration

Downlink Weather includes winds, temperatures, position, altitude, turbulence, water vapor, etc.

summary integration and flight tests are important
SummaryIntegration and flight tests are important!
  • Benefits:
  • Helps prioritize actions required to progress towards:
    • fuel burn reduction
    • on-time performance improvements
    • ride-quality benefits
    • etc.
  • Industry, Government, and Suppliers:
  • Working together to mature weather and turbulence algorithms and applications (uplink and downlink)
  • Demonstrate various data-link options for reduced latency and costs: POA, VDLM2, L, cellular, Ku, and Ka bands
  • Integration:
  • Help improve and integrate atmospheric sensors as well as sharing and evaluation of meteorological observations
  • Demonstrate aircraft network, security, and broadband data communication functions
  • Help improve flight test operations using new weather and turbulence applications