Author Topic: KIZUNA (WINDS) launch  (Read 48140 times)

Offline anik

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KIZUNA (WINDS) launch
« on: 10/10/2007 05:59 PM »
"KIZUNA" chosen as nickname for "WINDS"!
http://www.jaxa.jp/topics/2007/10_e.html
 
"The Wideband InterNetworking engineering Test and Demonstration Satellite (WINDS) is a super-high speed Internet satellite scheduled to be launched in the coming Winter launch season.
As a result of asking the public to nominate a nickname for it, 9,657 suggestions were received in total. Among them, "KIZUNA," meaning "ties" or "bonds," was chosen after 452 nominations for it were received, indicating the strong hope for the satellite to play the role of bonding people.
The "KIZUNA" is now undergoing its final verification test at the Tsukuba Space Center, and will be transported to Tanegasima in early November to be ready for the launch"

http://www.jaxa.jp/projects/sat/winds/index_e.html

Offline Satori

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KIZUNA (WINDS) launch
« Reply #1 on: 11/20/2007 09:17 PM »
From the JAXA/KIZUNA site:

Satellite system arrived at TNSC
 
The WINDS, which completed a system proto-flight test at the Tsukuba Space Center (TKSC,) was transported to the Tanegashima Space Center (TNSC.)

The satellite, which moved out from the TKSC (Photo A,) was transported via land and sea, and arrived at the TNSC on October 27 (Photo B.) The launch site tests have started at the Spacecraft Test and Assembly Building 2 (STA2) at the TNSC.

(Photo C: The KIZUNA loaded onto the satellite transporter) At the TNSC, preparations for the KIZUNA launch are underway.

Online William Graham

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Re: KIZUNA chosen as nickname for WINDS
« Reply #2 on: 11/20/2007 10:59 PM »
Any news on when this is going to launch? The last I heared was November, so I'm assuming that it's been delayed from then. Can we expect it to go before the end of the year?

Also, which H-IIA variant will this be launched on?

Offline Satori

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Re: KIZUNA chosen as nickname for WINDS
« Reply #3 on: 11/21/2007 10:28 AM »
Quote
GW_Simulations - 20/11/2007  5:59 PM

Any news on when this is going to launch? The last I heared was November, so I'm assuming that it's been delayed from then. Can we expect it to go before the end of the year?

Also, which H-IIA variant will this be launched on?

I'm not sure on this but I think the launch will take place in December and Kizuna will be launched by a H-2A/2024.

Online William Graham

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Re: KIZUNA chosen as nickname for WINDS
« Reply #4 on: 11/21/2007 06:42 PM »
Thanks

Offline Satori

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Re: KIZUNA chosen as nickname for WINDS
« Reply #5 on: 11/22/2007 01:17 PM »
Apparentely the launch of Kizuna (WINDS) will take place only in 2008 according to this.

Online eeergo

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RE: KIZUNA (WINDS) launch
« Reply #6 on: 11/27/2007 03:06 PM »

The fairing for the HII-A rocket has been delivered:

http://www.webwire.com/ViewPressRel.asp?aId=53639

-DaviD-

Offline Satori

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RE: KIZUNA (WINDS) launch
« Reply #7 on: 11/29/2007 01:40 PM »
The launch of Kizuna (WINDS) will probably take place on February 15th.

The "2007 winter rocket launch and tracking and control plan Super high-speed Internet satellite (WINDS)/H-IIA rocket 14 machine (H-IIA F14)" is here (in japanese).

Offline Satori

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RE: KIZUNA (WINDS) launch
« Reply #8 on: 12/05/2007 10:12 AM »
The japanese space agency, JAXA, announced that the launch of Kizuna (WINDS) is schedule for February 15th. See press-release.

The Special Site of Kizuna (WINDS).

Offline Satori

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RE: KIZUNA (WINDS) launch
« Reply #9 on: 01/25/2008 09:01 PM »
Some information about the H-2A for the Kizuna launch are available on the Mitsubishi Heavy Industries page.

Online Ronsmytheiii

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RE: KIZUNA (WINDS) launch
« Reply #10 on: 02/01/2008 05:56 PM »
I remember reading that satellite internet has extremely large latency issues (from 2 to 3 secconds, deadly in most online gaming, im, and voip services)  What is the latency for Winds, and how are some ways to reduce it?
And this is a good reminder that just because one of your fellow space enthusiasts occasionally voices doubts about the SpaceX schedule announcements or is cautious about believing SpaceX has licked a problem before actually seeing proof that's true, it doesn't mean they hate SpaceX.

Offline MKremer

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RE: KIZUNA (WINDS) launch
« Reply #11 on: 02/01/2008 06:16 PM »
The same, because a lot of the latency is due to the distance to the satellite and back (and you can't make signals at the speed of light go any faster), also signal processing and conversion have to be done at both ends of the sat link.

Online hop

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RE: KIZUNA (WINDS) launch
« Reply #12 on: 02/01/2008 08:08 PM »
Quote
Ronsmytheiii - 1/2/2008  10:56 AM

I remember reading that satellite internet has extremely large latency issues (from 2 to 3 secconds, deadly in most online gaming, im, and voip services)  What is the latency for Winds, and how are some ways to reduce it?
Light time round trip to GSO accounts for roughly 0.3 of a second (depending on the geometry, since neither end point is likely to be directly under the satellite, and if both are, you are really doing something wrong.) In my experience, actual  connections that go over a satellite link tend to be between 0.5 and .75 of sec. That's enough to be pretty unusable for fast action games, but it's not a deal breaker for most common internet applications.

2-3 seconds would be excessive, unless you live on the moon.

Offline Jirka Dlouhy

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Re: KIZUNA (WINDS) launch
« Reply #13 on: 02/03/2008 02:55 PM »
Is weight of Kizuna (2700 kg) dry or it´s weight by launch? Thanks for info

Offline Satori

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Re: KIZUNA (WINDS) launch
« Reply #14 on: 02/07/2008 01:18 PM »
From JAXA, "KIZUNA" finally moved to the Vehicle Assembly Building.

Quote

Is weight of Kizuna (2700 kg) dry or it´s weight by launch? Thanks for info



The launch mass of Kizuna is 4850 kg, in-orbit mass is 2750 kg.

Offline Jirka Dlouhy

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Re: KIZUNA (WINDS) launch
« Reply #15 on: 02/07/2008 01:28 PM »
Thanks for Your info.

Online William Graham

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Re: KIZUNA (WINDS) launch
« Reply #16 on: 02/09/2008 05:35 PM »
Webcast is available from JAXA:
http://www.jaxa.jp/countdown/f14/live/weblive_e.html

Scheduled to start at L-1 hour. That is 06:27 GMT.

Offline Satori

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KIZUNA (WINDS) launch
« Reply #17 on: 02/12/2008 11:19 AM »
On February 5 the fairing with the Kizuna satellite was attached to the final stage of the H-2A launch vehicle. Two days latter there was a test of the control and tracking system of the rocket and on the 9th the Kizuna sat passed the final tests. On February 10th the technicians verified the launch safety control system.

On Ferbuary 13 we will have the last preparations for launch with verification of all systems and the countdown will start on the 14th.

Kizuna launch will take place at 0727UTC on February 15th.

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RE: KIZUNA (WINDS) launch
« Reply #18 on: 02/12/2008 11:34 PM »
JAXA Webcast begins 30 minutes before launch and finished 30 minutes after lift off

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RE: KIZUNA (WINDS) launch
« Reply #19 on: 02/12/2008 11:42 PM »
OVERVIEW OF THE H-IIA LAUNCH VEHICLE Nş 14
--------------------------------------------------------------------------------
The H-IIA F14 is a "H2 A2024" type of rocket with two solid rocket boosters (SRB-A) and four solid strap-on boosters (SSB.) The fairing is a 4S-model (4 meters in diameter.)


The H-IIA F14 Mission
To inject its onboard satellite, the "Wideband Internetworking Engineering Test and Demonstration Satellite" (WINDS), into a geostationary transfer orbit.


Scheduled injection orbit
Perigee: at an altitude of 250 km, Apogee: at 35,976 km
Inclination: 28.5 degrees, Argument of Perigee: 179 degrees


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