rootbrowseIAC-18D6session 33. Enabling safe commercial spaceflight: vehicles and spaceportsPapers1. ROLE OF THERMOACCOUSTIC COUPLING WITH EXTERNAL HEAT SOURCE ON POTENTIAL PROPULSIVE FIRES2. Implementing and operating spaceports: legal and regulatory issues3. The NearSpace Interface between Air and Space Traffic Management4. spaceports selection and outfitting: a challenge for providing wide range opportunities and operating services to commercial space activities5. A preliminary study on the price model from aviation to suborbital to orbital space tourism8. From aviation tourism to suborbital space tourism: the issue on spaceport requirements9. Spaceport Operations in Europe