SpaceX Falcon 9 : Formosat-5 : SLC-4E Vandenberg : Aug 24, 2017 : DISCUSSION

[titusou]

HYDROPAC 2814/2017 (29,76,83) 
SOUTH PACIFIC.
DNC 06, DNC 29.
1. HAZARDOUS OPERATIONS 2046Z TO 2154Z DAILY
   24 THRU 27 AUG IN AREA BOUND BY
   25-49S 161-58W, 25-49S 156-56W,
   62-04S 168-58W, 62-02S 178-36W.
2. CANCEL THIS MSG 272254Z AUG 17.

-----

Launch is planned as Aug24 1850 UTC

And stage2 hazard zone starting on Aug24 2046 UTC to 2154 UTC (daily till Aug27).
I assume that means stage2 is planned for re-entry +116mins ~ +184mins ?

Based on NSPO chart, Formosat5 planned separation on +66.5mins at 723km alt (circular orbit?).

So... 50mins after separation = beginning of stage2 re-entry hazard warning

A simple de-orbit burn or something else?


A nice image made by Paul is here to show stage2 hazard zone:
https://forum.nasaspaceflight.com/index.php?topic=43396.msg1714946#msg1714946


Titus

[Norm38]

^^^Payload is 475kg and booster is landing at sea.  If they are going to do S2 reuse experiments, they won't get more mass to work with than this. (FH demo excepted)

[Lar]

^^^Payload is 475kg and booster is landing at sea.  If they are going to do S2 reuse experiments, they won't get more mass to work with than this. (FH demo excepted)

Good point. The only question is, were they ready to try things? The short S2 debris window time (if I am interpreting that correctly) after launch suggests maybe not, just a straight deorbit?

[stcks]

Based on NSPO chart, Formosat5 planned separation on +66.5mins at 723km alt (circular orbit?).

Are you referring to your previous post regarding the chart? http://forum.nasaspaceflight.com/index.php?topic=21984.msg1698438#msg1698438

If so, that doesn't match the press kit which shows a single second stage burn and deployment at +11:18. I'd bet that chart is quite old.

[titusou]

Based on NSPO chart, Formosat5 planned separation on +66.5mins at 723km alt (circular orbit?).

Are you referring to your previous post regarding the chart? http://forum.nasaspaceflight.com/index.php?topic=21984.msg1698438#msg1698438

If so, that doesn't match the press kit which shows a single second stage burn and deployment at +11:18. I'd bet that chart is quite old.

Could be, that chart been on NSPO website quite long time already.

Eitherway, we are looking at +116mins ~ +184mins stage2 hazard zone warning window... I just wonder if it's straight de-orbit or something else...

Titus

[Ben the Space Brit]

Are the five stars on the mission patch for successful west coast launches?

[SmallKing]

Are the five stars on the mission patch for successful west coast launches?

Formosat-5

[SciNews]

SpaceX Formosat-5 mission: Falcon 9 static fire test

[SmallKing]

Interesting to note Taiwan's flag was not decal'd on the fairing, just the name.

It's a political issue about One-China policy

[ZachS09]

Why, according to the press kit, is there not a boostback burn event listed?

[nukie19]

Why, according to the press kit, is there not a boostback burn event listed?

Because there isn't a boostback burn.

[cppetrie]

Why, according to the press kit, is there not a boostback burn event listed?

No RTLS. Downrange landing on ASDS. So no need for boostback burn.

[old_sellsword]

Why, according to the press kit, is there not a boostback burn event listed?

No RTLS. Downrange landing on ASDS. So no need for boostback burn.

The Iridium landings have boostback burns and they’re ASDS landings as well. But maybe that’s a misnomer because they’re less “boostback” burns and more “limiting downrange distance” burns.

[Joffan]

Why, according to the press kit, is there not a boostback burn event listed?

No RTLS. Downrange landing on ASDS. So no need for boostback burn.

It's still a little surprising to me that there is no burn after separation, for targeting. You can't assume that the launch will hit nominal separation conditions. Perhaps there is more cross-range ability on the re-entry burn than I thought.

[Jarnis]

Why, according to the press kit, is there not a boostback burn event listed?

No RTLS. Downrange landing on ASDS. So no need for boostback burn.

It's still a little surprising to me that there is no burn after separation, for targeting. You can't assume that the launch will hit nominal separation conditions. Perhaps there is more cross-range ability on the re-entry burn than I thought.

Guess the trajectory is a really high lob, which would match the reported single-burn direct insertion to 700km-ish orbit.

So it directly falls to the ASDS location without a boostback burn. Re-entry burn will probably be longer then?

[gongora]

I guess the FAA will get around to posting the launch license on their site sometime in the next month or so.

[bsegal]

Apologies since I know this has been addressed before and elsewhere, but I'm not recalling why there isn't yet an on-shore landing zone that's available at Vandenburg instead of needing the drone ship?

[Herb Schaltegger]

Apologies since I know this has been addressed before and elsewhere, but I'm not recalling why there isn't yet an on-shore landing zone that's available at Vandenburg instead of needing the drone ship?

Not 100% clear but likely still waiting on final approval from the Western Range, for whatever internal reasons they have. There are L2 photos that show it essentially complete except for painting, as well as a bit more info (but not much). (PLUG, PLUG - L2 membership is worth it, even if not for this tiny bit of non-info, lol!)

[oldAtlas_Eguy]

Thanks Chris for the picture on the Updates thread. A BTW that's the VAFB "security blanket" (old VAFB space hand joke about the almost ever present heavy marine layer).

[StuffOfInterest]

What times do the launch window open and close?  The opening time is usually in the update thread title, but appears to be currently missing.