11 minutes to launch
 

Knight:	Precool is coming off.
NASA 1:	Roger.
B-52:	10 minute warning.
Knight:	APU cooling switch to normal. Both blowers and LN2.
Peterson:	LN2 is off in the 52.
Knight:	Pressure cooling is on. Inertial gages 45,000, zero H dot and a little over 800 fps velocity. Attitudes look good. 349° heading.
B-52:	Roger, 349°.
NASA 1:	Roger.
Knight:	Cabin source is 3100.
Peterson:	830 on velocity.
Knight:	That's about right.
Peterson:	OK.
B-52:	9 minutes.
NASA 1:	Roger.
Knight:	Helium shutoff valve is open. Ready to start #2 APU, Bill?
NASA 1:	Rog, cleared to start #2 and 8 minutes looks good, Charlie.
B-52:	OK, are you going to call us?
NASA 1:	No, you can go ahead and turn on your time.
Knight:	#2 is on and steady. Cleared to start #l, Bill?
NASA 1:	Start #l, Pete.
Knight:	OK. APUs are on. Generators reset. Engine reset. Hydraulic pressures 35 and 3600. Electrical power is 200 each one. Controls and flaps.
Chase:	Rog.
Knight:	Flaps coming down.
Chase:	Coming down both sides.
Knight:	Flaps going up.
Chase:	Up.
Knight:	Rog, and the flap circuit breakers are in.
B-52:	8 minutes, starting turn.
NASA 1:	Roger.
Knight:	Mixing chambers, #l is 35 or 38 and #2 is 48.
NASA 1:	Rog, Pete.
Knight:	And the camera .......... is coming on. Camera check. And I got a green blinking light. a is 3° and b is about 1° needle left. Aux cabin pressure switch is on.
B-52:	Did you get the 7 minutes, Pete?
Knight:	Rog. Platform is on internal. Fire extinguisher is auto. Alternate SAS is off. How do you read, Bill?
NASA 1:	Loud and clear, Pete.
Knight:	I think I will go ahead with the SAS check.
NASA 1:	Rog. We're coming up on 6 minutes in about 10 seconds.
B-52:	That checks.
Knight:	OK, SAS check is complete. All handles on Hi Hi Hi. Horizontal stabilizer position, Chase l?
Chase:	..........
Knight:	OK, the light is still blinking, Bill.
NASA 1:	Roger, understand the camera light is still blinking.
Knight:	OK, it's stopped now.
NASA 1:	Very good.
Knight:	I'm on setting "G."
NASA 1:	Setting G (George). Roger. NASA 1 will call 4 minutes.
B-52:	Roger, coming up on 5 minutes now.
NASA 1:	Roger, this will be a short minute, Charlie.
B-52:	Roger.
Knight:	X-15 oxygen pressure is 2700, going to X-15.
NASA 1:	Rog, Pete.
Knight:	Cabin altitude is 3600.
NASA 1:	Rog, and did you check your horizontal stabilizer position?
Knight:	Rog, Chase 1 verified.
NASA 1:	Rog. 4 minutes now.
Peterson:	Hold off on the Lox topoff, Pete, I'm not done yet.
Knight:	Rog, holding off.
B-52:	Rolling out 172.
NASA 1:	Roger. We've had the 4 minute warning, Pete.
Knight:	Rog, I'm waiting for the topoff.
Peterson:	Got the .......... going now, topoff is complete.
Knight:	Rog, going to pressurize. Lox and ammonia jettison, ready for jettison check?
Chase:	..........
Knight:	Rog. All 3 switches to jettison.
NASA 1:	008, come 2° left.
B-52:	Roger, 2° left.
Knight:	Intercom off, Bill, how do you read me on X-15 radio?
NASA 1:	Loud and clear, Pete. We will call this 3 minutes, it will be another short minute into 2.
Knight:	.......... about 700 fps now. H dot is zero. Altitude is 4500.
NASA 1:	Roger.
Knight:	APU bearings are 100+ and about 60 right, #1 and #2.
NASA 1:	Rog, Pete, and the winds are down to 10 knots, we plan on a 18 landing.
Knight:	Say again, Bill?
NASA 1:	The winds are down to 10 knots, we plan landing on runway 18.
Knight:	Roger, plan 18?
NASA 1:	Rog.
Knight:	How do you read, Bill?
NASA 1:	Loud and clear, Pete, we plan on landing runway 18.
Knight:	Say again, we're planning on runway 18?
B-52:	The winds are down, we plan a 18 landing, and we are to call this 2 minutes.
Knight:	OK, going to test ball nose. Ball nose a is 2°, b is 1° needle left.
NASA 1:	Rog, Pete, how do you read now?
Knight:	5 square, give me a countdown for 1 minute.
NASA 1:	Will do.
Peterson:	Stable platform in specs.
NASA 1:	Rog, Pete, standby for countdown. 5, 4, 3, 2, 1, hack.
Knight:	Rog, I got it. Data on, tape on, calibrate. Going to prime.
Chase:	Good prime.
Knight:	Precool and igniter idle are on. I got an igniter ready light.
NASA 1:	Rog, Pete.
Peterson:	Stable platform to inertial.
Knight:	Rog, pump coming up.
Chase:	Roger .......
Knight:	Manifolds look good. Igniter looks good, ready to launch.
NASA 1:	Looks good here, Pete.
Knight:	Rog, 3, 2, 1, launch.
Chase:	Got a good light.
NASA 1:	OK, Pete, watch your a. Check your throttle. Your heading looks good. Standby for theta. Heading and profile look very good, Pete. Standby for pushover. Coming up on 70,000 feet now.
Knight:	Rog, looks good.
NASA 1:	Rog, looks good here, Pete. Heading is very good. Standby for shutdown.
Knight:	Rog, got a little early shutdown.
NASA 1:	Rog. You're coming right down the line, Pete. Don't change a thing. Camera to Fox.
Knight:	Rog.
NASA 1:	And come 1° right. Your speed is 5100. Watch your H dot, you're losing a little altitude. Come right 1°. 10 miles to target, Pete.
Knight:	Rog.
NASA 1:	5 miles to target, watch your theta, watch your bank.
Knight:	Looks good.
NASA 1:	Speed is 4600, Pete. Your heading is good.
Knight:	There's the target.
NASA 1:	And you're over the target, affirmative. Your speed is 4400. Your altitude is 86,000. Your heading is good. Camera to E (Easy). And you're coming through Mach 4, Pete, altitude is 84,000. And your heading is right down the track, Pete. And your speed is 3800, altitude is still 84,000. Camera to D (Dog).
Knight:	Rog.
NASA 1:	Camera to C (Charlie), Pete. And you're at 50 miles now, your speed is 3350. Altitude is 83,000.
Knight:	Speed brakes coming out.
NASA 1:	Roger on the speed brakes, Pete. You're just coming through Mach 3, altitude is 77,000. Your heading is outstanding. Speed is 2800, coming through 72,000. We'd like the camera to B (Baker).
Knight:	Roger, Baker.
NASA 1:	Speed brakes in, Pete, you're coming through 2.5. Your altitude is 60,000.
Knight:	Speed brakes coming in.
NASA 1:	Rog, Pete. We have you at 2200 fps, 60,000, and you're just inside Cuddeback. You're 20 miles north. We have you at Mach 2, Pete.
Knight:	OK.
NASA 1:	Everything is looking good. You're 12 miles north, coming through 52,000, your energy is very good.
Knight:	Rog.
NASA 1:	Camera setting to A (Able).
Knight:	A (Able), pitch dampers back on, ASAS back on.
NASA 1:	Roger, Pete, and will you save peroxide, go to stop jettison on peroxide when you have time.
Knight:	Rog. Stop jettison, ready for jettison, Joe?
Chase:	Rog, ready jettison.
NASA 1:	We have you coming across the highway, Pete, at 48,000 and 1300 fps.
Knight:	Rog.
NASA 1:	When you have time, you can turn the engine master off.
Knight:	Engine master off.
NASA 1:	You're at high key, Pete, check squat, flap circuit breakers.
Knight:	Rog.
NASA 1:	Arm your ventral, check your ventral circuit breaker. And we have you coming subsonic, monitor your a.
Knight:	Rog.
NASA 1:	Extend your alternate pitot tube.
Knight:	Rog. Altitude, Joe?
NASA 1:	We have you coming through 36,000, Pete.
Knight:	Rog. Don't forget the ventral, Joe?
Chase:	Rog.
Knight:	Little buffet at 9° here, Bill.
NASA 1:	Rog, Pete, and we have you through 28,000.
Chase:	There it goes.
Knight:	Say again?
Chase:	Got the chute.
Knight:	What chute?
Chase:	Something came out the ventral.
Knight:	Rog, I didn't do a thing.
NASA 1:	Is the chute sill hanging on the airplane?
Chase:	Negative, it's departed.
NASA 1:	Very good.
Knight:	OK, how much altitude?
Chase:	18, 200 .
Knight:	Rog. Winds, Bill?
NASA 1:	Rog, we have you through 16,000 in the control room, Pete.
Knight:	Winds, Bill?
NASA 1:	Oh, they're out of the SW at 10 knots.
Knight:	Rog. Speed brakes closed. Throwing the ventral.
Chase:	OK, they're off.
Knight:	Rog, flaps.
Chase:	Down.
Knight:	Gear.
Chase:	Down, looks good.
Knight:	Heading is 150, ball looks good. Inertial altitude is zero. H dot is zero. Velocity is zero. Oxygen pressure is 2000. Hydraulic pressures both good, 34 and 35. Peroxide tank pressure good. APU bearing temps, 100 on #1 and about 20 on #2. Peroxide low light is off. Mixing chambers, -40 on #1 and 40 on #2. Engine source pressure is good, #1 & #2 about 1600. APU source 27 and 28. Cabin source 18. No door pressure.