Emerging Developments & Issues - Suborbital Commercial Spaceflight
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Transcript of Emerging Developments & Issues - Suborbital Commercial Spaceflight
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Emerging Developments & Issues - Suborbital Commercial Spaceflight
Dr Andy Quinn
Saturn SMS Ltd, UK&
Chair of the Suborbital Safety Technical
Committee for the IAASSICAO REMAT
Montreal, Canada24 May 2013
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Introduction
Suborbital Players, Spaceports & P2P The problem The Issue – how to Regulate Aviation Acceptable Level of Safety (ALOS) UAS Levels of Safety Previous NASA Spaceflight Levels of Safety Relevance to Commercial Spaceflight Proposed standards & ALOS for suborbital (from
the IAASS) Conclusions
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The Players
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Emerging Spaceports
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Point to Point
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The Problem(with new industry with complex &
novel technology)
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Risk
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Market
Present
New
Present
New
A new product, a new market ……
Product
Increasing Risk
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How Safe is Safe Enough?
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The Issue - How to Regulate Current suborbital frameworks include Launch
Licensing versus Certification i.e. the US way or the (possible) European way
Regulation should accommodate the types of suborbital vehicles and understand the risks i.e. the US and those Nations with remote/restricted areas
can accommodate Vertical Launch as well as the winged vehicles
Harmonization with safety requirements & safety targets should be answer – this would be a suitable International solution for suborbital players
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Aviation Acceptable Levels of Safety (ALOS)
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Aviation ALOS
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Commercial Aviation historical accident rates derived a worldwide accident rate of 1x10-6 (1 in 1 million) per flying hour – this is the ALOSCurrent achieved rate is 0.1x10-6 pfh IATA figures say current rate is 2.7 accidents per million flights
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UAS ALOS
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UAS regulatory framework is complex and immature BUT still demands certification to an Equivalent Level of Safety (ELOS) to that of aircraft for platforms above 150kg
This means for the Remote Piloted Aircraft (RPA) they must meet requirements of AC23.1309 - the ALOS (i.e. the derived catastrophic safety target and not the individual safety objectives) for Part 23 aircraft is 1x10-4 per flying hour (for GA aircraft) and 1x10-5 for newly built Class I aircraft (under 2751kg) – noted that the RPA is only part of the System
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Previous Spaceflight Achieved Rates
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Space Shuttle – at the last flight the achieved accident rate was 1 in 90 (1.1x10-2 per mission)
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US Commercial Spaceflight Safety Criteria
The Expected Casualty (Ec) ‘acceptable objective’ probability value is 30x10-6 per mission This is 30 times worse than the AC 23.1309 (implicit)
safety target (ALOS) for aircraft-based vehicles (noted that the Ec is based on exposure over populated flight path and relates to safety of the non-involved public on the ground)
So, is this ALOS applicable to the Operators such as Virgin Galactic or indeed Blue Origin today? (who will not fly over populated areas) – what about the safety of those on board?
FAA-AST looking at future requirements for crew & participants – hopefully hear about that progress later in this REMAT conference
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NASA ALOS NASA’s new CCTS Programme has provided safety
targets (ALOS): a. The Loss of Crew (LOC) probability distribution for the
ascent phase of a 210 day ISS mission shall have a mean value no greater than 1 in 1000
b. The LOC probability distribution for the reentry phase of a 210 day ISS mission shall have a mean value no greater than 1 in 1000
c. The LOC probability distribution for a 210 day ISS mission shall have a mean value no greater than 1 in 270 (3.7x10-3) The NASA Aerospace Safety Advisory Panel said this is a concern (3 times
less safe than the Constellation program)
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IAASS Spaceflight Safety Target The International Association for the
Advancement of Space Safety (IAASS) comprise members from Industry and have provided an IAASS-ISSB Space Safety Standard manual: Safety Risk target for Orbital - probability of catastrophic
event 1x10-3 per mission (ALOS) Safety Risk target for Sub-Orbital - probability of
catastrophic event 1x10-4 per mission (ALOS) – this target was further rationalised and accepted within the Suborbital Safety TC proposed standards & guidelines
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ALOS
3.7x10-3 • NASA Orbital safety target (per total mission)
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Conclusions The regulators should have a harmonized approach
(between US and Europe) for international suborbital players
The regulators of new vehicles within new or existing domains (orbital, suborbital, P2P & UAS) should derive an ALOS based on existing methods and statistics BUT rationalised and tailored to their industry…… and tailored to the vehicle types and areas of operation because; New product, new market (and new environment) =
increased risk
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