Full STS-93 Mission Control Loops - Draft

Name: Full STS-93 Mission Control Loops - Draft
Uploaded: 2022-12-04T02:03:56.000Z
Duration: 10 min 25 s
Channel: TMRO Space News

TMRO Space News

1 Video View·Dec 4, 2022

Some of the data in the above video I don’t believe to be correct. I was going to hold on publishing this until I could get it all sorted, but I think the community may be able to help. Certain things like the countdown calls are likely from the ground, not the vehicle so I just need to know what position to tie those too. Some calls overlap and I’m missing.

If you see an edit that needs to be made, please help out! Leave the change in the comments below and I’ll work to update the video with all of the notes. Together I hope we can create the best STS-93 mission control loops video on the Internet!

- Jami

STS-93 was one of the most dynamic successful shuttle flights, ever. From the moment the vehicle lifted off the pad things started to go wrong, but the trained NASA Mission Control operators kept their cool, worked the issues and just over 8 minutes after liftoff the Shuttle crew made it safely to space.

To understand exactly what happened, Wayne Hale has a great blog post here: https://waynehale.wordpress.com/2014/10/26/sts-93-we-dont-need-any-more-of-those/ This is a video with the live launch broadcast video, transcribed operator comms and the operator audio. Enjoy!

In the center, LHG pressure sensor looks good. That's a good heads up. I concur. And all the LPFT discharge temperatures look good too. Copy that. I concur. Boards coming closed. Locks outboard closed. Locks. Fuel outboard closed. Fuel outboard's closed. GLS is go for auto sequence start. A-side 31. W-side 31. 25 seconds. HPLS is open. Morgan turbine speed. 20. Morgan SMU hydraulic. 15. 10. Smoker's open. All vents open. Fuel pre-rouse overboard bleed. Overboard bleed. Ignition. Dollop line up. 3-800 main stage. Liftoff confirmed. Copy liftoff. Dollop 3-104. Houston, CORVIA is in the roll. We've got a fuel outfeed. Number one. LHG, LHG, A on the center, DQB on the left. You got an AC bus that says off. No engine on the fuel channel. LHG. LHG, LHG, DQB on the left. LHG, LHG, A on the center, DQB on the left. AC bus looks like something on AC1. Copy that. AC bus sensor's off. Columbia, Houston, we'd like AC bus sensor's off. Eagle flight. We're looking. Look like a transient on AC1. Tell them that. Transient on AC1. Bus looks healthy at this time. Roger that, Columbia. Looks like we had a transient on AC1. 267. Boost flight. Give me what we lost on the controllers. We lost a DCUA on the center and DCUB on the right. Critical AC2 on the center and AC3 on the right. Turn around 367. In the bucket. Main engine's encouraged and copy with your call. Watching for GPC 103. Yeah, we're critical AC2. And AC3, fly. Copy. And AC3, Houston. We are critical AC2 on the center engine, AC3 on the right, plus DCU A on the center and DCU B on the right. Mayor, go with throttle up. Copy that. And Columbia, Houston, you are go with throttle up. And we did it. We did get MCF on both engines. And I concur. Houston, MPS. Go MPS. Yeah, right hydraulic pressure, bravo. Tim, any idea what trips on AC1? It looks like ratty data. Now the fuel cell pH, is that also the AC guys? That's just when the yes sir went advanced. It just did a cell test. Copy that. Houston, main engine. Yeah, we see high fuel and oxidized with temps on the right engine. Doesn't look like a performance case right now, but I'm verifying. Copy. And Tim, the trend on AC1 right now is fly line. I mean, it looks good on all the inverter. Yes sir, the top three buses look healthy at this time. Okay. 103 converged. Copy. Performance nominal. Copy. Columbia, Houston. Performance nominal. Got it. And copy, nominal performance. Yeah, they did get the AC bus sensors off. I concur. And the primary data on the center looks static. Yeah, it is DCA. Lots of primary data. Just can't get the BSE channel here. Trying to recycle the BSE channel here. Copy that. Okay, MPS status? Two engine bend to rear. Columbia, Houston. Two engine bend. No suspects. I'm going to take a small plus six thrust update. Okay, and we've got no suspects. Copy that. And main engine concurs, then booster. Copy. All the parameters on the right engine. Looks like a possible pre-tuffling nozzle leak. The fuel temps and HPOT temps and OPOV is open. The fuel discharge pressure is low, but we're not meeting all Qs. We're not meeting the HPOT. Yeah, we're only halfway towards the turbine temp on the HPOT to that. I concur. Negative return. Columbia, Houston. You are negative return. Columbia, negative return. And the OPOV isn't near enough for that engine. I concur. We took a thrust update of plus six. Plus six. Copy that. Booster, how's your engines looking? Engine's looking good. Flight, the right engine looks like the tags are off on the right. Doesn't line up with anything. Copy. You lose most of your data on the center? Yeah, center engine lost primary data due to the DCA channel power fail. Okay. Copy good, Fess. John, if the center went down, you'd expect it behind the data path. Is that correct? Negative, Flight. We still have secondary data. We still have the PC sensors. The engine status word is dead. And main engine's encouraged. And booster main engine, what sensitivities? No. GPC one. I'm sorry, GPC two. And also GPC three. I'll give it a command pass. And the GPC three would be command data. Right. That's correct. Still looking at good helium, good LH on the MPS. Press to ATO. Columbia, Houston, press to ATO. Copy, press. Group, band jewel one oh nine. Copy, group. Single engine ops three. Copy, ops three. And Columbia, Houston, you can select band jewel now. Selecting band jewel. Roger that. You are single engine ops three. Single engine ops three. And MPS continues to look good. Good helium, good LH, center right open, not cycling. Copy that. Band jewel is on board, Flight. Copy band jewel. Single engine band jewel one oh four. Copy, single engine cow. Single engine band jewel one oh four. Press to MECO. Copy, press to MECO. Press to MECO. Columbia, press to MECO. Flight's calling. Band jewel rolled and heads up, Flight. Copy. One minute to Tigris. Inside two minutes, LISCO and under speed. Copy. Treads, booster on Mokadine for an under speed. No under speed, sir. Thank you. Copy, no under speed. Copy, none. And we're going to watch throttling on the center on the GH2LP and GO2LT. I concur. And the PC average we got. And we got the PC average coming down to this, right? Just lost a primary on the center. Booster flying. No flying. Single engine press one oh four. Columbia, Houston. Single engine press one oh four. Columbia, single engine press one oh four. John, coming up on a minute to MECO here. Any shutdown required? Negative. No shutdowns required. We'll watch throttling on the center with the secondary data that we have. Good call. Scooter, why don't we give that up? 3G. Columbia, Houston. Approaching MECO. Nominal shutdown plan. No action required. Heading over to Tigris. Deck, get up. 3G throttles. Throttles on three. Standby. Should have gone off UHF flight. Copy. Concur. 3G throttles activated. Commands, no shutdowns required. Copy that. Flight booster 3G throttling on three. Copy that. 23K. Locks at five. 23K. Locks at five. NPS is go for guided MECO. Concur. Main engines go. I concur. We're go. Fuel at five. Inflight, GC. We're not copying downlink on UHF to Bermuda. Copy. Arm. Find count. MECO. MECO confirmed. Locks low level cut. Confirmed. Copy. Three valves closed. Disconnects. Closed. Relief valves open. Backup dump valves open. Flight battle. Go. 15 foot per second under speed. Ohms one is not required. ETSEP. Flight, it looked like it was a locks low level cutoff. Copy. Confirm. Columbia, Houston. We see a 15 foot per second under speed. Ohms one not required. Copy. Ohms one not required. And it's great to be back in zero G again. And main engine is expecting dump on three. Okay, folks. All the post ohms one steps. NPS copies. Page three dash two. Booster, did you see the flash on the low level sensors? Yeah, we saw the locks low level sensors, all four of them, go dry right at MECO. And with the under speed there, it looked like it was probably a locks low level cutoff. Yikes. You bet. Confirm. We don't need any more of these. How about that?