[Ibex-public-announcements] IBEX Successful Spin Down & Repoint

Wed Jun 22 14:32:55 EDT 2011

Hello Team!

The delta-V maneuvers went so well that we were able to accelerate our return to science! The three delta-V maneuvers have placed us in an orbit that is lunar synchronous and therefore extremely stable. It has no eclipses >4 hours for more than 20 years, has perigee above the radiation belts and geosynchronous, and rotates the hole in the maps due to the Magnetosphere away from the Helionose. This orbit far surpasses our requirements and will ensure we do not need another orbit maintenance maneuver for more than a decade.

This morning we have successfully finished all of the maneuvers associated with the Orbit Maintenance Maneuver Procedure. We have spun down to our nominal ops spin rate of 4rpm. We have repointed to ~3.4 degrees off the sun, which is the correct orientation for science at this position in our orbit. All spacecraft systems are nominal.

Tomorrow we will turn on the payload and return to nominal operations.

Top Level Timeline:
6/05 0900 - Repoint - Completed
6/05 1530 - Spin Up - Completed
6/08 2000 - ADV1 (Apogee Delta-V #1) - Completed
6/16 1900 - ADV2 - Completed
6/17 1100 - ADV3 - Completed
6/22 0900 - Spin Down - Completed
6/22 1530 - Repoint - Completed
6/23 0900 - CEU on, Hi & Lo on, LV checkout
6/23 1330 - HVSTANDBY
6/23 1530 - HVSCI, Return to Nominal Operations

Go IBEX!
Chelle

~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chelle Reno
Austin Mission Consulting
(210) 478-7337 (c)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

________________________________

From: ibex-public-announcements-bounces at lists.sr.unh.edu on behalf of Reno, Michelle
Sent: Fri 6/17/2011 9:08 AM
To: Reno, Michelle; IBEX Public Announcements
Subject: [Ibex-public-announcements] IBEX Successful Apogee Delta-V #3

Hello Team!

Our 3rd delta-V maneuver was also nominal!

At 1100 UTC today we performed our 3rd 600 second delta-V maneuver. Temperatures, pressures and spacecraft telemetry were all nominal and the burn executed as planned. 

We will now collect Doppler data to get an OD solution for our long-term orbit.

Top Level Timeline:
6/05 0900 - Repoint - Completed
6/05 1530 - Spin Up - Completed
6/08 2000 - ADV1 (Apogee Delta-V #1) - Completed
6/16 1900 - ADV2 - Completed
6/17 1100 - ADV3
6/24 0900 - Spin Down
6/24 1530 - Repoint
6/24 1730 - CEU on, Hi & Lo on, LV checkout
6/25 1300 - HVSTANDBY
6/25 1500 - HVSCI

Dates after ADV3 are contingent upon achieving target orbit with 3 maneuvers. I will keep you posted.

Go IBEX!
Chelle

~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chelle Reno
Austin Mission Consulting
(210) 478-7337 (c)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

________________________________

From: ibex-public-announcements-bounces at lists.sr.unh.edu on behalf of Reno, Michelle
Sent: Thu 6/16/2011 6:15 PM
To: IBEX Public Announcements
Subject: [Ibex-public-announcements] IBEX Successful Apogee Delta-V #2

Hello Team!

Our orbit maintenance maneuver continues to proceed nominally!

At 1900 UTC today we performed our 2nd 600 second delta-V maneuver. Temperatures, pressures and spacecraft telemetry were all nominal and the burn executed as planned. 

Tomorrow morning at 1100 UTC we will perform our 3rd 600s delta-V maneuver.

Top Level Timeline:
6/05 0900 - Repoint - Completed
6/05 1530 - Spin Up - Completed
6/08 2000 - ADV1 (Apogee Delta-V #1) - Completed
6/16 1900 - ADV2 - Completed
6/17 1100 - ADV3
6/24 0900 - Spin Down
6/24 1530 - Repoint
6/24 1730 - CEU on, Hi & Lo on, LV checkout
6/25 1300 - HVSTANDBY
6/25 1500 - HVSCI

Dates after ADV3 are contingent upon achieving target orbit with 3 maneuvers. I will keep you posted.
Go IBEX!

Chelle

________________________________

From: ibex-public-announcements-bounces at lists.sr.unh.edu on behalf of Reno, Michelle
Sent: Wed 6/8/2011 5:47 PM
To: Reno, Michelle; IBEX Public Announcements
Subject: [Ibex-public-announcements] IBEX Successful Apogee Delta-V #1

Hello Team!

I am thrilled to say our first delta-V maneuver was successful.

At 2000 UTC today we performed a 600 second delta-V maneuver. Temperatures, pressures and spacecraft telemetry were all nominal and the burn executed as planned. 

We will collect telemetry & Doppler data over the next few days and get an OD-based thruster calibration after we go through perigee. We will use this knowledge to tune the duration of our final delta-V maneuver.

Top Level Timeline:
6/05 0900 - Repoint - Completed
6/05 1530 - Spin Up - Completed
6/08 2000 - ADV1 (Apogee Delta-V #1) - Completed
6/16 1900 - ADV2
6/17 1100 - ADV3
6/24 0900 - Spin Down
6/24 1530 - Repoint
6/24 1730 - CEU on, Hi & Lo on, LV checkout
6/25 1300 - HVSTANDBY
6/25 1500 - HVSCI

Dates after ADV3 are contingent upon achieving target orbit with 3 maneuvers. I will keep you posted.

Go IBEX!
Chelle

~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chelle Reno
Austin Mission Consulting
(210) 478-7337 (c)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

________________________________

From: ibex-public-announcements-bounces at lists.sr.unh.edu on behalf of Reno, Michelle
Sent: Sun 6/5/2011 1:11 PM
To: IBEX Public Announcements
Subject: [Ibex-public-announcements] Successful Repoint & Spin Up

Hello Team!

I am happy to report a very successful day at the IBEX MOC. Today's maneuvers went off without a hitch.

At 0430 UTC this morning we began the IBEX Maintenance Maneuver Procedure. The payload was in LVENG with the sensors off as commanded in the orbit 127 ATS. We repointed to align the spacecraft with the velocity vector at the 6/17 apogee. All systems were verified, the pointing vector was approved and the SSR was dumped. Then the full payload & star tracker were turned off, and will remain off throughout the delta-V maneuvers. The spacecraft was spun up to 22rpm to remain spin stabilized for the maneuvers.

All systems are green, we are power positive, our spin rate and pointing are adjusted and we are ready to move on to continue on to our first delta-V maneuver on June 8.

Top Level Timeline:
6/05 0900 - Repoint - Completed
6/05 1530 - Spin Up - Completed
6/08 2000 - ADV1 (Apogee Delta-V #1)
6/16 1900 - ADV2
6/17 1100 - ADV3
6/24 0900 - Spin Down
6/24 1530 - Repoint
6/24 1730 - CEU on, Hi & Lo on, LV checkout
6/25 1300 - HVSTANDBY
6/25 1500 - HVSCI

Dates after ADV3 are contingent upon achieving target orbit with 3 maneuvers. I will keep you posted.

Go IBEX!
Chelle

~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chelle Reno
Austin Mission Consulting
(210) 478-7337 (c)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~

________________________________

From: ibex-public-announcements-bounces at lists.sr.unh.edu on behalf of Reno, Michelle
Sent: Thu 6/2/2011 10:03 AM
To: IBEX Public Announcements; Macdowall, Robert J. (GSFC-6950); Christian, Eric R. (HQ-DJ000); Rich Burns
Subject: [Ibex-public-announcements] IBEX Maintenance Maneuver begins June 5

Hi team,

We have given the official 'Go' for the orbit maintenance maneuver procedure. We will begin on Sunday, June 5th by repointing to align the spacecraft with the velocity vector at apogee. After pointing is approved we will spin up to 22rpm for spin stabilization during the delta-V maneuvers. 

Top Level Timeline:
6/05 0900 - Repoint
6/05 1530 - Spin Up
6/08 2000 - ADV1 (Apogee Delta-V #1)
6/16 1900 - ADV2
6/17 1100 - ADV3
6/24 0900 - Spin Down
6/24 1530 - Repoint
6/24 1730 - CEU on, Hi & Lo on, LV checkout
6/25 1300 - HVSTANDBY
6/25 1500 - HVSCI

Dates after ADV3 are contingent upon achieving target orbit with 3 maneuvers. I will keep you posted.

Go IBEX!
Chelle

~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chelle Reno
Austin Mission Consulting
(210) 478-7337 (c)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.sr.unh.edu/pipermail/ibex-public-announcements/attachments/20110622/c2cde547/attachment-0001.html 