BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Namur Institute For Complex Systems - ECPv6.15.20//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:Namur Institute For Complex Systems
X-ORIGINAL-URL:https://www.naxys.be
X-WR-CALDESC:Events for Namur Institute For Complex Systems
REFRESH-INTERVAL;VALUE=DURATION:PT1H
X-Robots-Tag:noindex
X-PUBLISHED-TTL:PT1H
BEGIN:VTIMEZONE
TZID:Europe/Brussels
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20220327T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20221030T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20230326T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20231029T010000
END:STANDARD
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:20240331T010000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:20241027T010000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Europe/Brussels:20231214T130000
DTEND;TZID=Europe/Brussels:20231214T140000
DTSTAMP:20260415T044635
CREATED:20231025T110858Z
LAST-MODIFIED:20240209T151012Z
UID:2042-1702558800-1702562400@www.naxys.be
SUMMARY:André Füzfa (UNamur)
DESCRIPTION:Title: Fundamentals of relativistic astrodynamics and rocketry \nAbstract: \nAstrodynamics traditionally denotes the study of controlled flight paths of human-made spacecraft (Kaplan\, 1976). This term originates from the prehistory of the space age\, at a time where only archaic Newtonian dynamics were used for determining interplanetary spaceflights at extremely low velocities (in the km/s range). \nAfter briefly reviewing basic rocketry in this primitive language\, we will introduce space cadets to the modern geometric formalism that is now state-of-the-art for interstellar navigation. Relativistic trajectories in curved space-time are described by non-geodesic worldlines of particles submitted to the action of an external four-force. We will show how to use your relativistic inertial guidance system to monitor the evolution of both the rest mass of your starship and the apparent weight inside it\, through the space-time orientation of the total four-force. Then\, several well-known models of deep space propulsion will be reviewed: Ackeret’s rocket and the relativistic Tsiolkowsky equation\, thermal and radiation rockets\, Bussard’s ramjet and finally lightsails. We will end the course by two relativistic astrodynamical applications : basic interstellar transfer and ascent trajectories from a compact object. \nThe seminar will take place in Room S08 at the Faculty of Sciences.
URL:https://www.naxys.be/event/andre-fuzfa-unamur/
CATEGORIES:NAXYS Seminar
END:VEVENT
END:VCALENDAR