Delta 342 will be something like the 159th-ish launch from Complex 17A, which has been dedicated to the Delta program since 1960.
Quote from: edkyle99 on 08/10/2009 06:39 pmDelta 342 will be something like the 159th-ish launch from Complex 17A, which has been dedicated to the Delta program since 1960. I believe it will be the 161st launch from the pad, and the 145th to orbit.
Quote from: GW_Simulations on 08/10/2009 08:19 pmQuote from: edkyle99 on 08/10/2009 06:39 pmDelta 342 will be something like the 159th-ish launch from Complex 17A, which has been dedicated to the Delta program since 1960. I believe it will be the 161st launch from the pad, and the 145th to orbit.Those numbers look good. They match JCM's list. - Ed Kyle
This will be the final launch from Cape Canaveral Space Launch Complex 17A. - Ed Kyle
Perhaps someone can explain the significance of AD and ASTRA.
The GPS IIRM-21 mission patch proclaims '1 SLS -END OF AN ERA'. Perhaps someone familiar with launch operations at Patrick AFB can explain what '1 SLS' is.
Quote from: edkyle99 on 08/10/2009 06:39 pmThis will be the final launch from Cape Canaveral Space Launch Complex 17A. - Ed KyleThere is one more Delta II launch from Cape Canaveral after the current two, the GRAIL mission in September 2011. I take it this has already been assigned to SLC-17B?
Quote from: HIPAR on 08/11/2009 12:17 amThe GPS IIRM-21 mission patch proclaims '1 SLS -END OF AN ERA'. Perhaps someone familiar with launch operations at Patrick AFB can explain what '1 SLS' is.1st Space Launch Squadron. A little value added USAF group. Delta was launched before without them and will be continued to be launched without them
How are the 'honers' assigned?
Anyone know when they plan to roll the MST to launch position?
Quote from: DaveS on 08/16/2009 02:07 pmAnyone know when they plan to roll the MST to launch position?The previous GPS launch took place during the early dawn hours, like this one. Its MST rollback occurred during sundown, approximately, the previous evening. - Ed Kyle
Tower is lit but not retracted yet.
is it the final Delta II rocket launch by USAF (from CCAFS and VAFB)? not for ULA or NASA obviously
Quote from: jan_carlo_bascu on 08/17/2009 12:55 amis it the final Delta II rocket launch by USAF (from CCAFS and VAFB)? not for ULA or NASA obviouslyIt is the last Delta II for the Air Force. The remaining launches are for NASA or commercial customers. NASA is managing the STSS launch even though it is a joint NASA/DoD mission.This is the last launch currently scheduled from SLC 17A. It will be the final launch from that pad barring a new contract. Only two additional Cape Delta II launches remain on the schedule after this one, in addition to five from Vandenberg. - Ed Kyle
What were all those brief 'puffs' from the vehicle at random directions during the end of first stage?
Was that the attitude control system firing?
One of David's F-22s on the GPS promo?
Quote from: JimO on 08/17/2009 10:41 amWhat were all those brief 'puffs' from the vehicle at random directions during the end of first stage?Normal puffs due to slight variations in main engine combustion. Pretty usual for RP-1 engines.
ULA’s next launch is the Department of Defense PAN mission scheduled aboard an Atlas V from SLC-41 here. A specific launch date in September has not been established.
S/C Sep confirmed by the USAFFor those interested, the exact liftoff time was 10:35:00.233 GMT
Quote from: GW_Simulations on 08/17/2009 11:46 amFor those interested, the exact liftoff time was 10:35:00.233 GMTSpaceflight.now is reporting 10:35:00.231 GMT
For those interested, the exact liftoff time was 10:35:00.233 GMT
Quote from: Satori on 08/17/2009 01:27 pmQuote from: GW_Simulations on 08/17/2009 11:46 amFor those interested, the exact liftoff time was 10:35:00.233 GMTSpaceflight.now is reporting 10:35:00.231 GMTWow, stop the presses!
VideoSome language, mostly "holy ****" xD
Quote from: GW_Simulations on 08/17/2009 11:46 amS/C Sep confirmed by the USAFFor those interested, the exact liftoff time was 10:35:00.233 GMTSpaceflight.now is reporting 10:35:00.231 GMT
"Around one hour and forty seven minutes after launch, the second stage will restart for a third burn. This will be a propellant depletion burn, lasting approximately thirty two seconds, and will lower the stage’s orbit to speed up its orbital decay, so that it reenters the atmosphere sooner rather than later."32 seconds worth of fuel (vernier burn?) seems like a lot of "oomph" to leave in the upper stage. Good to hear they're trying to clean up the lower atmosphere by hastening the re-entry burn but can anyone shed light on leaving that much fuel in an upper stage?
Quote from: Satori on 08/17/2009 01:27 pmQuote from: GW_Simulations on 08/17/2009 11:46 amS/C Sep confirmed by the USAFFor those interested, the exact liftoff time was 10:35:00.233 GMTSpaceflight.now is reporting 10:35:00.231 GMTMy time came from the NASA ELV Portal
Any word on a USA designation?
32 seconds worth of fuel (vernier burn?) seems like a lot of "oomph" to leave in the upper stage. Good to hear they're trying to clean up the lower atmosphere by hastening the re-entry burn but can anyone shed light on leaving that much fuel in an upper stage?
Is the telemetry package on the upper stage and not the satellite itself?
Quote from: Targeteer on 08/17/2009 09:51 am32 seconds worth of fuel (vernier burn?) seems like a lot of "oomph" to leave in the upper stage. Good to hear they're trying to clean up the lower atmosphere by hastening the re-entry burn but can anyone shed light on leaving that much fuel in an upper stage?Spacecraft was light, the winds at this time of year were favorable, the orbit was favorable
The "depletion burn" is actually a pair of "mono-propellant blowdown" events, thus the duration. The AJ10-119K engine does not actually ignite during this blowdown.
Quote from: Jim on 08/17/2009 08:47 pmQuote from: Targeteer on 08/17/2009 09:51 am32 seconds worth of fuel (vernier burn?) seems like a lot of "oomph" to leave in the upper stage. Good to hear they're trying to clean up the lower atmosphere by hastening the re-entry burn but can anyone shed light on leaving that much fuel in an upper stage?Spacecraft was light, the winds at this time of year were favorable, the orbit was favorableHow about shortfall on 1st stage performance? Prop mixture/SRB/other plus second stage possibility of low and slow?
ULA also has WGS3 on Delta IV, is that a DoD payload?
Quote from: edkyle99 on 08/17/2009 02:51 pmThe "depletion burn" is actually a pair of "mono-propellant blowdown" events, thus the duration. The AJ10-119K engine does not actually ignite during this blowdown.True for Atlas but not Delta II. It is an actual ignition and burn
He's how I saw this morning's lift-off
Lovely video!Is the SRB sep really when labeled, to me it looks like it was moving into sunlight at that point.
Quote from: Jim on 08/11/2009 12:29 amQuote from: HIPAR on 08/11/2009 12:17 amThe GPS IIRM-21 mission patch proclaims '1 SLS -END OF AN ERA'. Perhaps someone familiar with launch operations at Patrick AFB can explain what '1 SLS' is.1st Space Launch Squadron. A little value added USAF group. Delta was launched before without them and will be continued to be launched without themJim - would love to hear your insights on the roles of the different groups in the USAF and NASA launches. I gather ULA does the actual work for all of them. My vague impression has been that current-era NASA launches are formally a launch services buy - ULA owns the rocket and is formally responsible for the launch, NASA just buys the ride as a passenger; while for USAF launches, USAF owns the rocket and 1SLS is on paper responsible for the launch, with ULA in the role of a subcontractor... but I'm sure you'll tell me I've got it completely wrong? :-)So what *did* 1SLS folks actually do?regards, Jonathan
Jim - would love to hear your insights on the roles of the different groups in the USAF and NASA launches. I gather ULA does the actual work for all of them. My vague impression has been that current-era NASA launches are formally a launch services buy - ULA owns the rocket and is formally responsible for the launch, NASA just buys the ride as a passenger; while for USAF launches, USAF owns the rocket and 1SLS is on paper responsible for the launch, with ULA in the role of a subcontractor... but I'm sure you'll tell me I've got it completely wrong? :-)
Quote from: jcm on 08/17/2009 02:11 pmJim - would love to hear your insights on the roles of the different groups in the USAF and NASA launches. I gather ULA does the actual work for all of them. My vague impression has been that current-era NASA launches are formally a launch services buy - ULA owns the rocket and is formally responsible for the launch, NASA just buys the ride as a passenger; while for USAF launches, USAF owns the rocket and 1SLS is on paper responsible for the launch, with ULA in the role of a subcontractor... but I'm sure you'll tell me I've got it completely wrong? :-)NASA now buys launch services. No hardwareUSAF buys a vehicle with one contract and also has another contract to launch it.The 1SLS does not touch the hardware. Just watches ULA