Wake Turbulence An Obstacle to Increased Air Traffic Capacity (2008) / Chapter Skim
Currently Skimming:
1 Introduction
1 Introduction
Pages 15-23
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From page 15... ...
Significant advances in surveillance and navigation technologies have high potential to increase system capacity by substantially reducing aircraft separation distances during flight. It is the goal of NextGen to develop and oversee the implementation of these technologies in order to increase airspace system capacity and address increased demand.
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From page 16... ...
prevent the use of reduced separation standards enabled by satellite and other technologies. This report reviews the nation's wake turbulence research and development program and assesses its ability to provide wake vortex avoidance and/or mitigation technologies that will permit achievement of the NextGen goals.
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The pressure to increase capacity with these new systems will accentuate the importance of determining safe separation minima for wake vortex avoidance in all phases of flight: en route, terminal, and approaches to single runways or closely spaced parallel runways (CSPRs for the runways TABLE 1-1 IFR Separation Requirements for Arrival on the Same Runway (NM) Trailing Aircraft Heavy Large Small (max.
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From page 18... ...
There is currently a lack of aviation community consensus on how to define an acceptable level of risk associated with aircraft operations in all wake vortex scenarios. Furthermore, there is little information available that would help quantify the number and severity of wake turbulence encounters before and after an operational change.
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From page 19... ...
There has never been an accident directly attributed to wake turbulence while aircraft were following IFR spacing criteria or the self-spacing criteria of AC 90-23F and the Aeronautical Information Manual in VMC. Current wake vortex separation criteria are conservative and sufficient for ensuring safe operations.
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From page 20... ...
It should be noted that increases in arrival will be more significant during IMC conditions, since VMC spacing is already more efficient. However, if these new procedures could prove the safety case that would allow a reduction of the minimum lateral runway spacing, airports could build new runways where there is sufficient space between present runways, thereby increasing capacity in all weather conditions.
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From page 21... ...
House of Representatives Committee on Science and Technology, and the JPDO. It also heard from many of the major stakeholders of the WakeNet USA forum: the FAA, NASA's Langley Research Center, the FAA's Volpe Transportation Center, MITRE, MIT Lincoln Laboratory, the Air Line Pilots Association, and the National Air Traffic Controllers Association.
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From page 22... ...
2007. Reduced wake vortex and runway occupancy time analysis, presentation to the Committee to Conduct an Independent Assessment of the Nation's Wake Turbu lence Research and Development Program, April 2, 2007, Washington, D.C.
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From page 23... ...
2007. Wake turbulence research management plan, presentation to the Committee to Conduct an Independent Assessment of the Nation's Wake Turbulence Research and Development Program, April 2, 2007, Washington, D.C.
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