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NASA NTRSDate not supplied

Mission Status, On-Orbit Performance, and Lessons Learned of the Global Ecosystem Dynamics Investigation (GEDI) Lidar Laser Transmitters

The Global Ecosystems Dynamics Investigation (GEDI) Lidar, is a global 3-dimensional biomass lidar instrument aboard the International Space Station (ISS) and the Japanese Experiment Module (JEM). Its core mission is to measure the global carbon balance of Earth’s forests with 3 laser transmitters using multi-beam waveform-capture methods. GEDI’s laser transmitter concept was originally funded by NASA Goddard’s Earth Science Technology Office (ESTO) for future Earth Altimetry and Lidar missions ~ 20 years ago, and after a long road of development, the first flight-ready unit was a 10 mJ-class system for GEDI’s ISS-based specifications. Furthermore, no adjustment in drive parameters has been required nor significant decay detected after 4 years of near continuous operation of 3 on-board lasers, which were designed for a 2-year mission. We report on the GEDI laser design process, their on-orbit performance, the major lessons learned, and some critical insight into our in-house flight quality development process that enabled their delivery within budget, schedule, and low risk extended mission life capability.

D. Barry Coyle↗

NASA NTRS2005

STS-114: Discovery Mission Status Briefing

This video features mid-deck payloads being stowed at Pad 39B, a ribbon cutting ceremony at the NASA Shuttle Launch Facility (SLF) Air Traffic Control Tower and footage of the air traffic control radar constructed at Shiloh. The STS-114 Crewmembers, Commander, Eileen Collins, Pilot, James Kelly, Mission Specialist, Charles Camarda, Mission Specialist, Wendy Lawrence, Mission Specialist, Soichi Noguchi, JAXA, Mission Specialist, Stephen Robinson, and Mission Specialist Andrew Thomas are shown arriving at the Shuttle Landing Facility at Kennedy Space Center. Eileen Collins introduces each crew member and talks to the news media about their role during this mission. The astronauts are also shown during their spacesuit fit check at the Operations and Control Center (O&C) and footage of a practice flight is presented. The start of the countdown clock in the firing room 3 of the launch control center is shown

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NASA NTRSDate not supplied

NASA's Quesst Mission Status

Construction of NASA’s X-59 low-boom aircraft is nearing completion with its first flight scheduled within the next several months. The X-59 will be the low-boom noise source for a series of community noise surveys across the USA. The goal of NASA’s Quesst Mission is to collect and correlate noise and perceptual response data to low-loudness sonic booms so that the current prohibition on commercial supersonic aircraft flight overland can be reconsidered. This presentation describes the current state and future plans for the Quesst Mission and Commercial Supersonic Technology. Employment and internship opportunities for students and graduates are also outlined.

X-59↗

NASA NTRS1989

Solar probe mission status

The penetration of coronal regions by a solar probe employing planetary gravity-assist trajectories to attain perihelia of only a few solar radii will allow unique in situ experiments to be conducted. The trajectory design options will fundamentally impact solar probe spacecraft design criteria. The aerogravity-assist method, which requires the bending of a trajectory in the vicinity of a planet by passing through a portion of its atmosphere will yield large changes in direction and velocity. This option would in the case of a solar probe mission involve the use of either the earth or Venus as a target for a specially aerodynamically configured 'waverider' spacecraft with L/D of the order of 10.

Randolph, J. E.↗

NASA NTRS2019

Landsat 9: Mission Status and Prelaunch Instrument Performance Characterization and Calibration

Landsat 9 is currently under development as a joint effort between NASA and the United States Geological Survey (USGS). Landsat 9 is essentially a rebuild of Landsat 8 and has the same two sensors, the Operational Land Imager (OLI) and the Thermal Imaging Sensor (TIRS). The OLI-2 on Landsat 9, is being built by Ball Aerospace and has completed its pre-launch characterization and calibration and is scheduled to be delivered in the summer of 2019. The TIRS-2, being built by Goddard Space Flight Center, is currently undergoing testing through Spring 2019 and also scheduled for summer 2019 delivery. Several improvements to the characterization of both instruments have been incorporated into the testing plan, including improved spectral and radiometric characterization. The instruments will then be integrated onto the spacecraft being built by Northrop Grumman Innovation Systems (NGIS). The mission is targeted to launch as early as December 2020 on an Atlas-5.

Markham, Brian↗

NASA NTRS2019

Landsat 9: Mission Status and Prelaunch Instrument Performance Characterization and Calibration

Markham, Brian↗

NASA NTRS2019

LANDSAT 9: Mission Status and Prelaunch Instrument Performance Characterization and Calibration

Landsat 9 is currently under development as a joint effort between NASA and the United States Geological Survey (USGS). Landsat 9 is largely a rebuild of Landsat 8 and has the same two sensors, an Operational Land Imager (OLI) and a Thermal InfraRed Sensor(TIRS). The OLI-2 on Landsat 9, being built by Ball Aerospace, has completed its pre-launch characterization and calibration and is scheduled to be delivered in the summer of 2019. The TIRS-2, with improved stray light performance and increased redundancy for improved reliability, is being built by Goddard Space Flight Center. TIRS-2is undergoing testing through Spring 2019 and is also scheduled for summer2019 delivery. Several improvements to the characterization of both instruments have been incorporated into the testing plan, including improved spectral and radiometric characterization. The instruments will then be integrated onto the spacecraft being built by Northrop Grumman Innovation Systems (NGIS). The mission is targeted to launch as early as December 2020 on an Atlas V.

Landsat↗

NASA NTRS1993

Mars Observer mission status and orbit insertion phase planning

The Mars Observer spacecraft will reach Mars on August 24, 1993. Launch and cruise phase operations have gone smoothly, with few spacecraft anomalies. The orbit insertion phase, which spans a three month period and involves a series of seven maneuvers, has been redesigned postlaunch making use of excess spacecraft velocity change (Delta V) capability to advance the mapping phase, now planned to begin November 24, 1993. This is highly desirable since it moves the start of the mapping phase away from solar conjunction and the expected dust storm disturbances. The redesign process involved making tradeoffs between science, operations, and maneuver requirements. At Mars, the spacecraft will continuously record data with a single daily playback through the Deep Space Network's 34-meter high-efficiency antennas for one Martian year.

Dodd, Suzanne R.↗

NASA NTRS2002

Vertex Movement for Mission Status Graphics: A Polar-Star Display

Humans are traditionally bad monitors, especially over long periods of time on reliable systems, and they are being called upon to do this more and more as systems become further automated. Because of this, there is a need to find a way to display the monitoring information to the human operator in such a way that he can notice pertinent deviations in a timely manner. One possible solution is to use polar-star displays that will show deviations from normal in a more salient manner. A polar-star display uses a polygon's vertices to report values. An important question arises, though, of how the vertices should move. This experiment investigated two particular issues of how the vertices should move: (1) whether the movement of the vertices should be continuous or discrete and (2) whether the parameters that made up each vertex should always move in one direction regardless of parameter sign or move in both directions indicating parameter sign. The results indicate that relative movement direction is best. Subjects performed better with this movement type and they subjectively preferred it to the absolute movement direction. As for movement type, no strong preferences were shown.

Trujillo, Anna↗

NASA NTRS2005

STS-114: Discovery Mission Status Briefing

Paul Hill, STS-114 Lead Shuttle Flight Director, talks about the imagery that was captured during the first twenty four hours in orbit. He expresses that new data was captured during ascent of the Space Shuttle Discovery through imagery and in-orbit handheld photographs of the Orbital Maneuvering system (OMS) pods were taken. Laser surveys were also taken of both the wing leading edges and nose caps using the Orbiter Boom and Sensor System (OBSS) instrument package. He presents raw footage from the Laser Dynamic Range Imager (LDRI) at the end of the OBSS showing RCC panels and tiles. He also answers questions from the news media about the possible damage to the Orbiter and debris during lift-off.

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NASA NTRS2005

STS-114: Discovery Day 13 Mission Status Briefing

LeRoy Cain, STS-114 Ascent/Entry Flight Director, takes a solo stand with the Press in this briefing. He reports that the vehicle is in good shape, consumable status is excellent, and the shuttle crew is in high spirits and preparing for de-orbit and landing. LeRoy and his team have completed the entry system check up, flight control check up, reactor control system check up, and noted that all are at nominal performance; weather forecast is very good, the Entry team is ready and looking forward to de-orbit and landing at the Kennedy Space Center on Monday, August 8th. Re-entry, personal feelings, Columbia accident, data gathering, consumable situation, back up sites, weather, communication block out, night and day landing, and Commander Collin's piloting skills during night flight are some of the topics covered with the News media.

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NASA NTRS2006

STS-121/Discovery: Mission Status Briefing

Tony Ceccacci (Space Shuttle Flight Director) discussed the following activities: starboard survey, two space rendezvous, nose cap survey, timelines. Rick LaBrode (International Space Station Flight Director) discussed the following activities: preparation for Shuttle Docking, leak checks, pressurization checks, final configuration for cameras, setting up the internal wireless information system, accelerometers, etc. Then the floor was open to questions from the press.

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NASA NTRS2003