BEGIN:VCALENDAR

VERSION:2.0

PRODID:-//wp-events-plugin.com//6.6.4.4//EN

TZID:Asia/Jerusalem

X-WR-TIMEZONE:Asia/Jerusalem
BEGIN:VEVENT

UID:0-390@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20180124T163000

DTEND;TZID=Asia/Jerusalem:20180124T173000

DTSTAMP:20230527T140941Z

URL:https://aerospace.technion.ac.il/events/cluster-keeping-with-different
 ial-drag-and-srp-for-elliptic-orbits/

SUMMARY:Cluster-Keeping with Differential Drag and SRP for Elliptic Orbits
DESCRIPTION:Lecturer:Evgeney Koretsky\n Faculty:Department of Aerospace Eng
 ineering\n Institute:Technion – Israel Institute of Technology\n Locatio
 n:Classroom 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: \n Abstr
 act: \n Details: \n Solar radiation pressure (SRP) is a caused by photons 
 transferring their momentum to the satellite. The magnitudes of atmospheri
 c drag and SRP are similar for spacecraft in circular orbits at altitudes 
 of about 700 km. SRP tends to increase the eccentricity of the orbit\, whi
 le atmospheric drag tends to decrease it.  In the present research\, feed
 back control laws aimed at keeping a cluster of satellites within bounded 
 distances are derived. Differential accelerations are obtained based on cr
 oss section area manipulation with respect to the drag and SRP directions.
  By the derivation of a semianalytical solution for the orbital dynamics t
 hat includes SRP and drag\, we present several improvements to existing cl
 uster keeping control laws.  The feedback is based on mean semimajor axis
 \, eccentricity and inclination\, which are obtained from the Brouwer tran
 sformation. Simulations show that the combination of differential drag and
  differential SRP can maintain a cluster of satellites within bounded dist
 ances on highly elliptic orbits\, such as geostationary transfer orbits\, 
 and on circular low Earth orbits.
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

END:VEVENT

BEGIN:VTIMEZONE

TZID:Asia/Jerusalem

X-LIC-LOCATION:Asia/Jerusalem

BEGIN:STANDARD

DTSTART:20171029T010000

TZOFFSETFROM:+0300

TZOFFSETTO:+0200

TZNAME:IST

END:STANDARD

END:VTIMEZONE
END:VCALENDAR