- Atlantis (17)
- Pad 39-A (57)
- 79th Shuttle Mission
- 17th Flight OV-104
- Night Launch
- 4th Mir Docking
- Rollback (11,12)
- KSC Landing (32)
- William F. Readdy (3), Commander
- Terrence W. Wilcutt (2), Pilot
- Thomas D. Akers (4), Mission Specialist
- John E. Blaha (5), Mission Specialist
- Jay Apt (4), Mission Specialist
- Carl E. Walz (3), Mission specialist
- Shannon W. Lucid (5), Mission Specialist
- Flow A:
- OPF -- 4/15/96
- VAB -- 6/24/96
- PAD -- 7/01/96
- Flow B: (after rollback due to
Hurricane Bertha and
- VAB -- 7/10/96
- OPF -- 8/03/96
- VAB -- 8/13/96
- PAD -- 8/20/96
- TCDT - 8/27/96
- Flow C: (after rollback due to
- VAB -- 9/04/96
- PAD -- 9/05/96
- L-2 -- 9/14/96
- Spacehab/Mir, IMAX,SAREX-II
The 4th rendezvous and docking with the Russian
Mir space station
and the exchange of
astronauts -- including the holder of the world
record for longest space flight ever by a U.S.
astronaut -- will
highlight the flight of Space Shuttle
Atlantis on Mission
is the fourth of nine planned missions to
Mir between 1995 and 1998
and the first exchange of astronauts.
Astronaut Shannon W. Lucid, who
has been on Mir since late March, will be replaced on
Blaha will spend more than four months on Mir. He
will return to Earth
on Space Shuttle Mission STS-81, scheduled for
launch in January 1997.
STS-79 is the
second Shuttle-Mir mission to carry a SPACEHAB
module on board, and the first to carry a double module. The forward
portion of the double module will house experiments conducted by the
crew before, during and after
Atlantis is docked to the Russian space
of the double module primarily houses the
logistics equipment to be transferred to the Russian space station.
Logistics include food, clothing, experiment supplies, and spare
equipment for Mir.
- Launch September 16, 1996. 4:54:49.048 am Window was approximately
- On Monday, September 16, 1996, the astronauts were awakened in the
crew quarters at midnight and after breakfast departed for the pad at
1:08am. The countdown proceeded smoothly. Liftoff was on time. MECO
occured ontime. No OMS-1 burn required. APU-2 shutdown slightly
ascent and is being investigated.
- On Saturday, September 14, 1996, activities were underway to
install time-critical experiments and other items designated for
late-stowage into the SPACEHAB Double Module in the payload bay.
Loading of fuels into the Space Shuttle
external tank started at
approximately 7:30 p.m. on Sunday night.
- The countdown for the launch of Space Shuttle
on Friday, Sept. 13 around 12 am. (midnight)
at the T-43 hour mark.
The KSC launch team is conducting the countdown from
Firing Room 1
of the Launch Control Center (LCC).
The countdown includes
33 hours and 53 minutes of built-in hold time.
Crew arrived at KSC around
midnight Sept 13 and RSS retract at 11am on Sept 15th.
- At 5:21am EDT on September 4, 1996, Space Shuttle
rolled back to the VAB due to the possibility of high winds from
Atlantis was securely back in the VAB by 11:30am.
The next day on
September 5, the Space Shuttle Atlantis
was returned to Pad 39A
following mission managers determination that the threat
of Hurricane Fran
to central Florida had passed. First motion from
the Vehicle Assembly Building
back to the pad occurred at about 2:51 a.m.
The vehicle was hard-down on the pad at about 8:30 a.m.
- On Thursday, August 29, 1996, following the flight readiness review,
Space Shuttle managers set Sept 14 as the launch date for
officials were keeping a close eye on tropical storm activity in the
Atlantic and plans were being developed to
Atlantis to the
if any storms turn toward the Kennedy Space Center.
- During the meeting, solid rocket motor managers presented data on the
abnormal sooting discovered in the J-leg tip on the
STS-78 solid rocket
motor field joints following
Columbia's launch in June. An analysis showed
that the most probable cause for the sooting was a new adhesive used in the
field joints for the first time on
STS-78. Managers decided to take a
conservative approach and replace the
STS-79 motors with a new set using the
old adhesive material. NASA managers said a thorough review of
new solid rocket motors verified their readiness for launch.
- On Tuesday, August 13, 1996,
Atlantis was moved from
Orbiter Processing Facility
(OPF) bay 3 to the
Vehicle Assembly Building
(VAB) with first motion
occuring at about 10:45 a.m.
- On Thursday, August 8, 1996, STS-79's
external tank was demated from
STS-79's original set of SRBs. A new set of SRB's has already been
stacked and destacking of the original
SRB is expected to begin on
- On Friday, August 2, 1996,
Atlantis was demated from the original set
of SRB's and transported to the
OPF bay no. 3 at about 2 AM Saturday.
STS-79's original SRBs are scheduled to be used on mission
they are destacked, cleaned, inspected and restacked.
- On Monday, July 29, 1996,
Atlantis remained in the
stacking operations of the replacement set of SRB's continued in the
adjacent high bay. Following a failed leak check on July 25, 1996 of
field joint between the right
aft center and right forward center
segments of the replacement SRBs, the forward center segment was
destacked and cleaned. During inspections of the secondary O-rings, an
applicator brush bristle was found and is believed to be the reason
for the field joint leakage. New O-rings were installed and the
segment was restacked. A leak check is being conducted today. If the
leak check is successful, booster stacking will be completed this week
external tank mated to the stack as early as Friday.
- On Monday, July 15, 1996, NASA managers decided to destack and
Solid Rocket Boosters
(SRB) with a new set of
boosters. Technicians disassembling the motors of Space Shuttle
STS-78 observed that
hot gases had seeped into J-joints in the
field joints of the motors. An investigation into the seepage
identified the most probable cause was the use of a new adhesive and
cleaning fluid. These elements were changed in order to comply with
new Environmental Protection Agency regulations which reduce ozone
depleting substances. The STS-79
booster set included the same
adhesive so a new
SRB stack built using the older adhesive will
be used until the problem can be further analyzed.
- On Tuesday, 7/9/96,
Mission managers decided to roll back
Pad LC-39A to the VAB
due to the projected
storm track of Hurricane Bertha.
The shuttle has been rolled back from the launch pad due to
weather twice previously.
(STS-35) was rolled back in
October 1990 due to Tropical Storm Klaus and
rolled back in August 1995 due to
Hurricane Erin. This was the
11th rollback in the shuttles operational history.
launch date of July 31, 1996 at 11:42pm EDT has been moved back to
sometime mid September.
Atlantis will be destacked from its
- Earlier in the week a
rollback was also being considered in the
event repairs will be needed to the Shuttle
Solid Rocket Boosters
(SRB) following the discovery of hot
gas penetration of rubber
insulation on the boosters for shuttle flight
On 7/1/96, Atlantis was rolled out
from the VAB to Pad 39A with first
motion occurring at 10:20 p.m. on 6/30/96.
The vehicle was hard down on
the pad by 5 a.m. A hot fire of the No. 3
Auxiliary Power Unit
then performed and then the
Rotating Service Structure
(RSS) was rolled
into position around the
On 6/3/96, in
OPF Bay-1, work was completed to remove,
replace and retest
six of Atlantis'
reaction control system
(RCS) thrusters. All three
main engines are also installed. In the
external tank will
be mated to the SRBs on 6/6/96.
On 4/17/96, in OPF Bay-1, the ferry
flight tail cone was removed. On
4/18/96 the SPACEHAB-MIR double module was removed as well as the
Waste Containment System
(WCS) and the
Reaction Control System
- Altitude: 196-245 statute miles
- Inclination: 51.6 degrees
- Orbits: 160
- Duration: 10 days, 3 hours, 19 minutes, 28seconds.
- Distance: 3.9 million miles
- SRB: BI-082 (before destacking),
BI-083 (after destacking)
- SRM: 360T056A (Left), 360T056B (right)
- ET : SN-82
- MLP : MLP-1
- SSME-1: SN-2012
- SSME-2: SN-2031
- SSME-3: SN-2033
- KSC September 26, 1996 at 8:13:20am EDT. Runway 15. A go was given
at 6:52am EDT for
deorbit burn and the 3min
17sec burn occurred at 7:06am
EDT on orbit
160 at a mission elapsed time of 10days, 3 hours, 18 minutes.
Atlantis landed on
KSC's 1st Opportunity landing track
which followed the
eastern seaboard of Georgia and Florida. Main Gear Touchdown was at
8:13:15 EDT (10days 3hr 18min 26sec), Nose gear touchdown at 8:13:29 EDT
(10days 3hr 18min 40sec) and wheels stop at 8:14:17 EDT
(10days 3hr 19min 28sec).
- The two KSC landing opportunities on Thursday were 8:11 a.m. and 9:48
a.m. In the event a landing was not possible at KSC on Thursday due to
weather concerns, a landing could have been made at
Edwards Air Force Base
(EAFB), CA. Landing opportunities at Edwards on Thursday were at 9:40
a.m. and 11:16 a.m. EDT. If managers decided to keep
Atlantis in orbit
an additional day, two landing opportunities were also available at KSC and
two at Edwards on Friday. KSC Friday landing times were 8:46 a.m. and
10:22 a.m. EDT. EAFB Friday landing times were 10:15 a.m. and 11:51
Last Mission STS-78
Next Mission STS-80
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