Transcript Slide 1
Optimal Use off Airspace by ASAS Syaid Ali Javanmard (Shiraz airport) Introduction In the near future capacity problems are foreseen ASAS: Airborne Separation Assurance System Introduction ‘ASAS’ was appeared in 1995 Airborne Separation Assistance System concept is based on delegation of manoeuvre to the crew. ASAS definitions “An aircraft system based on airborne surveillance that provides assistance to the flight crew supporting the separation of their aircraft from other aircraft.” ASAS principles Airborne surveillance based on ADS-B gives flight crews a traffic picture Air Traffic Services can be enhanced through a greater involvement of the flight crews and the aircraft systems (the flight deck) in co-operation with controllers ASAS application categories Airborne Traffic Situational Awareness Airborne Spacing Airborne Separation Airborne Self-separation Airborne Traffic Situational Awareness Aircraft CDTI ASAS Display ADS-B Expected Benefits Providing information on surrounding traffic may help crew to have a better understanding of situation. Improved safety through earlier anticipation of collision risks. Expected Benefits Reduced voice communications through a better flight crew traffic situational awareness. Increased efficiency procedures. of existing VFR Airborne Traffic Situational Awareness Applications GS 34 TWY Jto NEXT: D [ 290 ft] HDG 359° TAXI TO PARKING POSITION V135 RANGE: 360 330 1200 ft 030 D V135 H V117 V115 D V118 K V116 K 34L/16R D • Improved taxi and runway occupancy awareness Enhanced successive visual approaches Within the sequence: The ‘lead’ aircraft in any pair must be ‘ADS-B out’ capable The ‘trail’ aircraft must be ‘ADS-B in’ capable ADS-B Airborne Spacing Applications Time or Distance DLH900 SK9821 Expected benefits Improved Capacity and flexibility Reduce controller workload Reduced sector hand-off communications Airborne Separation Applications Target “DLH600 clear of target, turning direct to ABC” Delegated “DLH 600 pass behind target maintain airborne separation, report clear of target” Expected benefits Improved Capacity and flexibility Reduction separation minima Reduce controller workload Airborne Self-separation Applications Airborne Self-separation applications require flight crews to ensure that their flights remain separated from surrounding traffic, in accordance with applicable airborne separation standards. In a new class of controlled airspace, flight crews will have authority to self-separate from other aircraft and fly their preferred trajectories, thereby enabling controllers to focus on management of traffic flow. Conflict Detection & Resolution Heading distance Intruder’s protected zone Minimum distance Own ship Speed change Avoidance vector Intruder Expected benefits Safety: e.g. in airspace where there is no separation provision Flexibility: e.g. in low/medium density en-route airspace Capacity: e.g. in airspace where procedural separation is provided or in high density en-route airspace (if airborne separation minima are smaller than ATC separation minima) - Traffic display - application identification - parameters to control the current application - surveillance & alerting Specific, loadable Data-link clearances Dedicated ADS-B controls Management of ASAS functions & traffic display Conclusion Use of airspace can be enhanced through greater involvement of flight crews and aircraft systems in co-operation with controllers and the Air Traffic management system. Thanks For Your Kindly Attention