Akatsuki Venus Climate Orbiter |
Akatsuki Venus Climate Orbiter |
Mar 13 2010, 11:29 AM
Post
#501
|
|
Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
I thought it was time to start a separate thread on this mission, launching soon
some good medium-resolution images of the spacecraft are available on JAXA digital archives http://jda.jaxa.jp/jda/p3_e.php?time=N&...mp;mission=4066 |
|
|
Oct 28 2011, 05:13 AM
Post
#502
|
|
Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
a new pdf release by JAXA http://www.jaxa.jp/press/2011/10/20111026_sac_akatsuki.pdf
|
|
|
Oct 30 2011, 09:43 AM
Post
#503
|
|
Member Group: Members Posts: 817 Joined: 17-April 10 From: Kamakura, Japan Member No.: 5323 |
a new pdf release by JAXA http://www.jaxa.jp/press/2011/10/20111026_sac_akatsuki.pdf above for ease of reference page 6 5.Orbit control plan at the nearest sun (I know that there is a special term for this, but I keep forgetting it and I am more comfortable with nearest sun, P) point (There is a schematic and I will translate the character strings on it later. Main texts first) Orbit control by the RCS engines at the nearest sun approach point (1st control on 1 November) ΔV : 90m/s (2nd contorl on 10 November) ΔV : 90m/s (3rd control on 21 November) ΔV : approx. 70m/s We will carry out the 3rd control by taking into account the result of ultra accurate measurement of orbits effected by earlier two controls (thrust direction and magnitude will be dependent on the errors due to the first two controls). ※ These orbit changes are carried out in order to reunite with Venus after 2015. ※ There is a possibility that our orbit control plan may be altered depending on the assessment taking place from now on. (the schematic title says): Relative positions between the probe, Venus and the earth at the time of Akatsuki orbital controls (the unit, both vertical and horizontal, is 10 to the power of 8km) (outer circle is earth, inner circle is Akatsuki and in between is the Venus orbit) (2 characters around 9:00 are): top is Sept 2011 and bottom is test firing (bottom character on Venus orbit is): Nov 2011 (on earth orbit at 1 O'clock is): Nov 2011 (and at around 3:00 on the same earth orbit is ): Sept 2011 (at around 4:30 on Akatsuki orbit is): nearesst sun orbit control end of page 6 P |
|
|
Lo-Fi Version | Time is now: 26th September 2024 - 09:53 AM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |