ACCORD Aim: Provide a mechanism for communicating the efficacy of current debris mitigation...
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Transcript of ACCORD Aim: Provide a mechanism for communicating the efficacy of current debris mitigation...
ACCORD • Aim: Provide a mechanism for communicating the efficacy of
current debris mitigation practices & identifying opportunities for strengthening European capability
• Combining capability and capacity indicators within anEnvironmental Impact Rating System
Alignment of Capability and Capacityfor the Objective of Reducing Debris
Communicating the Effectiveness of Space Debris Mitigation Practices The ACCORD Environmental Impact Rating SystemSimon George1
Benjamin Schwarz1, Hugh Lewis1, Hedley
Stokes2
1 2Clean Space WorkshopTuesday 29th October 2013
www.fp7-accord.eu/rating
Environmental Impact Rating SystemInteractive tool to evaluate how design & operation of a prospective spacecraft may impact the space debris environment
– Free, voluntary industry tool for spacecraft designers and operators
– Final system will be implemented in a web-tool and hosted client-side to ensure privacy
Communicate how mitigation measures and good design practices can improve environmental impactAssist spacecraft designers in achieving
compliance with debris mitigation measures set out in IADC guidelines & ISO standards
Clean Space WorkshopTuesday 29th October 2013
User-Specified Inputs:
Construction of Rating System
Environmental Impact Rating
Orbit DataAltitude
Inclination
Mitigation Measures
Used
How Mitigation
Measures are Implemented
Quantify impact of a prospective spacecraft on the space debris environment
A single ‘score’ for a prospective spacecraft
– On-Orbit Mass
– Perigee Altitude
– Orbital Inclination
– Mitigation MeasuresImplemented
– How Mitigation Measuresare Implemented in Design
Data derived from ACCORD industry survey of implementation of debris
mitigation measures www.fp7-accord.eu/survey
Clean Space WorkshopTuesday 29th October 2013
“Health” ~
Assess the “health” of the space environment with respect to 2 ‘goals’:
1. Widespread Implementation of Mitigation Measures
2. “Benign” Space Debris Environment
Space “Health” Index
Leads to a measure of a “healthy” space environment to be used in the impact rating calculation
A measure of the long-term sustainability of outer space activities
Clean Space WorkshopTuesday 29th October 2013
A measure of how well the goal has been realised
For each goal, the index calculates a score (out of 100)
Rating Parameters:
1. Debris score for the prescribedorbital region (how “crowded” the region is)
2. The capacity of appliedmitigation measures to limit the generation of new debris (from DAMAGE)
3. How the prospective spacecraftaffects the “health” index in thegiven orbital region (re-calculate “health” index)
2. Environmental Impact Rating
Environmental Impact Rating
Defines LEO
Region
Orbit DataAltitude
Inclination
Mitigation Measures
Used
How Mitigation
Measures are Implemented
UserInputs
Crowding of Debris in
LEO Region
Capacity of Mitigation to Limit Future
Debris
Modification to “Health”
Index for LEO Region
“Health”Index
All scores expressed out of 100
Weighted average,giving preference to capacity score
Final Rating
Inputs:
Mass: 1000kgAltitude: 795kmInclination: 98
Applied Mitigation Measures:
- Collision Avoidance- Passivation- Avoid Accidental Break-Up
+ Post-Mission Disposal
Representative ‘Certificate’
Generates Client-Side PDF
Industry Engagement
Astronautics Research Group
Further Information:www.fp7-accord.eu/rating
Dr. Hugh LewisContact: [email protected]
• Invitation to test prototype rating system and provide feedback on its operation & design [exhibition area, or contact Dr. Hugh Lewis privately]
• Final system will be implemented in a web-tool and hosted client-side to ensure privacy
• All comments and feedback are welcomed
See also: ACCORD poster in exhibition area
Funding provided by the European Union Framework 7 Programme (Project No. 262824). Thanks to Carsten Wiedemann (TU Braunschweig), Adam White (University of Southampton), Richard Tremayne-Smith, and Holger Krag (ESA Space Debris Office)
Clean Space WorkshopTuesday 29th October 2013