July 16: “THE SYSTEM WORKS,” TRULY SAYS
Today, Vice President Dan Quayle met with NASA Administrator Richard Truly for an hour, their third meeting in a week. Rumors had persisted over the weekend that the National Space Council, an administration Cabinet-level policy-making group headed by Quayle, was pushing for a full-scale presidential-level investigation into NASA.
President Bush rejected such a notion. At a Washington news conference, Bush expressed strong support for Truly’s handling of the recent NASA problems: “I have confidence in NASA. I have great confidence in Dick Truly. It’s a perilous business, I guess, anytime you put people up there into space, but the record has been very good. I want to see us continue to be leaders in space.”
Instead of a presidential investigation, the Vice President directed the Administrator to select a group of non-NASA experts to advise the agency on its long-term goals. “Contrary to some published reports, there is no White House investigation of NASA,” Quayle said. “Space continues to be a top priority for this administration. We all want the best ideas on how we can move into the next century maintaining our leadership in space.”
Richard Truly said, “I am pleased the Vice President has expressed his confidence in NASA, as he has many times in the past. NASA will continue to work closely with the Space Council in pursuit of the President’s remarkable vision for America’s space destiny. I am confident the shuttle will be flying again soon and that timely corrections to the Hubble Space Telescope will assure realization of its full potential.” Louis Friedman, Executive Director of the Planetary Society, Pasadena, California, called Quayle’s decision to bring in voices outside NASA “a very good idea.”
Commenting on the temporary grounding of the Space Shuttle fleet, Truly said, “This is a case where our risk assessment system worked as advertised. We detected what could be an extremely hazardous situation with a hydrogen leak, and we have not been embarrassed to stop the flights until it is corrected. The system works.” (The Houston Chronicle, July 18, 1990; Countdown, September 1990; Chronology of KSC and KSC Related Events for 1990 – edited)
July 17: LIGHT AT THE END OF THE TUNNEL
NASA announced today it plans to resume Space Shuttle flights by mid-August, sending Atlantis on a secret mission if the ship's fuel leak can be repaired on the launch pad. With exceptional luck, NASA may get the shuttle Columbia's delayed astronomy mission off by mid-September. Columbia will carry ultraviolet and X-ray telescopes. William Lenoir, the agency's Associate Administrator for Spaceflight, said he will be pleasantly surprised if the aggressive recovery plan works.
The team charged with finding and fixing the hydrogen leaks discovered on Columbia and Atlantis is closer to wrapping up its investigation of the problem, Lenoir said. “Not only do we see the light at the end of the tunnel, but I believe we are out of the tunnel. And that we are out in the daylight ourselves,” he said.
NASA Administrator Richard Truly appeared on ABC’s “Good Morning America” program and said, “We were afraid that we had what we call a generic problem, something we had overlooked that might really be a dangerous situation that would have long-term effect. As it turned out, it was just the terrible coincidence of two separate, specific leaks. The system didn’t go down for three years like it did after Challenger; it went down for three or four weeks.”
Driving the shuttle schedule for the remainder of this year are plans to launch Discovery STS-41, carrying the Ulysses probe that will study the Sun's polar regions. Ulysses must be launched between Oct. 5 and Oct. 23 to place it on a precise course toward its destination. “It requires some luck on our part to fly the STS-38 and STS-35 mission first… We are very optimistic we will have at least one flight off prior to Ulysses, and we have a glimmer of hope to get two off,"Lenoir said. "While we consider that unlikely, we are going to see if that works.”
The plan hinges on the possibility that engineers will be able to stop Atlantis' leak by tightening 48 bolts on a flange in the ship's silo-shaped External Tank. If that strategy does not work, or if engineers peer into the assembly and find a cracked weld, Atlantis must be rolled from the pad to the Vehicle Assembly Building. The success of the bolt-tightening strategy should be evident by the middle to latter part of next week, when the work is scheduled to be followed by another fuel-leak test.
Photographs of the aft compartment were taken and thorough inspections were made earlier. Calibrations of the hazardous gas detection system are continuing and the flow rates of purges in the plastic “baggies” are being measured. Preparations to remove Auxiliary Power Unit #3 aboard Atlantis are underway. Since Atlantis has been at the pad, the vendor has identified a time-life issue with this unit. The other two APUs are refurbished units.
If Atlantis can be successfully launched on her four- to five-day mission as early as Aug. 10, NASA will attempt to follow it by launching Columbia between Sept. 10 and Sept. 14, Lenoir said. Columbia was removed from the launch pad last month. Her leak has been traced to a Teflon seal on the drive shaft of a fuel-line valve inside the winged orbiter. If Atlantis still leaks after tests next week, as Lenoir suspects she will, Columbia will be rolled to Kennedy's Pad 39A as Atlantis is rolled off. In that case, Columbia would be launched about Sept. 1 on her ten-day flight. (The Houston Chronicle, July 18, 1990; JSC Space News Roundup, July 20, 1990; Chronology of KSC and KSC Related Events for 1990 – edited)
July 18: FIRST COMMERCIAL ATLAS LAUNCH RESCHEDULED
General Dynamics Corp.’s first commercial Atlas rocket is now scheduled to launch from Cape Canaveral Air Force Station July 20 at 3:33 p.m. EDT. The launch had been delayed so a computer problem in the Combined Release and radiation Effects Satellite could be worked to resolution. Technicians concluded the problem with the satellite’s command decoder unit stemmed from outside radio-signal interference and slight distortions from the test equipment. Weekend tests of the equipment were successful. “We sent more than 10,000 commands to the CRRES with no errors,” said NASA spokesman George Diller. The satellite is designed to study the effect of space on advanced satellite electronics and the magnetic and electric fields around Earth. (Halvorson, Florida Today, July 17, 1990; Oates, Florida Today, July 19, 1990 – edited)
July 18: KSC OVERTIME LEVELS QUESTIONED
An examination of KSC records reveals: Kennedy Space Center has granted exceptions to its strict overtime regulations 2,500 times this year. Almost half the 1990 waivers have come during the weeks when shuttle launches and landings occurred. Experts have questioned whether the large amount of overtime might have contributed to fuel leaks which have grounded the shuttle fleet.
Bob Sieck, Shuttle Launch Director, said that KSC is handling overtime better than in the past and that worker fatigue is not a problem. “We have not found fatigue to be a factor in any of the incidents that have occurred in the past,” he said. “When we have an incident, overtime is the first thing we accumulate data on – the number of hours the person or all the people involved have worked prior to that event on that shift, that week, that month.”
“I can’t envision this place working with zero percent overtime; it would be impractical to completely eliminate the practice,” Sieck said. “If that were the case, too much of the workforce would be idle. If you had a standing army of people for every job that we did around here, to cover every contingency, the workforce would be exorbitant. It makes sense to use overtime to carry you through peak periods of activity.” (Higginbotham, Florida Today, July 20, 1990)
July 20: BOLTS TIGHTENED ON ATLANTIS FUEL LINE
NASA workers tightened most of the 48 bolts on one of Space Shuttle Atlantis' fuel lines today, but the space agency won't know whether that fixed a hydrogen leak until a tanking test next week. The shuttle's classified Defense Department mission is on hold until the problem is resolved. All the bolts checked out fine, said NASA spokeswoman Lisa Malone. "Everything looked normal," she said. Technicians over-torqued 38 of the 48 bolts by ten percent, Malone said. The remaining 10 already were over-torqued and so were not tightened. A pressurized helium test on the tank yesterday showed no evidence of any leaks, said Malone.
Discovery, meanwhile, has joined the other two orbiters with problems. One of 14 thrusters on Discovery's right Orbital Maneuvering System pad was dented when it fell off a work stand yesterday. A new $600,000 thruster, which weighs 20 pounds and is about the size of a football, will be installed. The accident occurred during routine maintenance work, Malone said. The replacement of the thruster will not jeopardize Discovery's scheduled launch with the sun-probing Ulysses satellite in October, Malone said. The damaged thruster was being returned to the manufacturer for repairs. (Deseret News, July 21, 2016)
July 20: HELIUM LEAK PROMPTS ATLAS LAUNCH SCRUB
The scheduled launch of an Atlas rocket was delayed today due to a leak which prevented the start of a compressor which furnishes gaseous nitrogen to the rocket to keep its satellite payload cool. Workers were able to start the compressor in time for a second launch attempt, but a leak in a liquid helium line then began overchilling hydrazine and the launch was called off just before 4:00 p.m. EDT. “We believe we understand what the problem is, but it will be at least Sunday before we try again,” said Jack Isabel, spokesman for General Dynamics. He said, further, that engineers will continue to assess the problem. (Chronology of KSC and KSC Related Events for 1990 – edited)
July 20: BRANDENSTEIN’S “EXCEDRIN GROUP” BEGINS TRAINING
Twenty-three of America’s finest reported for duty at Johnson Space Center this week as the astronaut class of 1990 began a year of candidate training and evaluation for what some have called the best job in the world. The reinforcements are a welcome relief as NASA resumes shuttle flight operations with an active schedule ahead, according to chief astronaut Dan Brandenstein. Since the last selection, three years ago, the astronaut roster has dwindled from 98 to 84.
At an informal reception on Monday (July 16) to introduce the candidates to news media, Brandenstein called them his “Excedrin Group.” He said, “These guys are going to relieve a lot of my headaches.”
Selected from nearly 2,000 qualified applicants earlier this year, the group consists of seven pilot and 16 mission specialist candidates. Among five women selected are three military officers, including the first woman to be named as a pilot candidate, and the first Hispanic woman to be selected. There are 11 civilians and 12 military officers total.
After being introduced by their new boss, the candidates mingled and talked with national and local news correspondents about joining the ranks of the astronaut corps, particularly at a time when NASA has come under fire both in the Congress and in the press. Enthusiasm and confidence in the agency was evident as many of the candidates spoke of mankind’s need to go to space and their own ambitions to be part of that.
While their first week on the job consisted primarily of orientation briefings and tours, they also received altitude chamber training as a prerequisite to T-38 flight training which begins next week. The next several months will consist of intensive instruction in the fundamentals of aerodynamics, electronics, and computers, as well as in shuttle systems and operations. Several trips are planned to other NASA field centers for briefings and tours, as well as for water and wilderness survival training. (Jeff Carr, JSC Space News Roundup, July 20, 1990 – edited)