The satellite did not achieve orbit because of a ruptured hydrazine manifold. However, it failed to achieve orbit during launch, and forced the continued operation of the failing Landsat-4 and -5 vehicles. The separation from the booster rocket occurred properly, however, the ruptured rocket fuel chamber prevented fuel from reaching the apogee kick motor. [2], Landsat 6 was launched aboard a Titan II launch vehicle from Vandenberg Air Force Base on October 5, 1993.

(Read NOAA press release from March 1995.). The satellite carried the Enhanced Thematic Mapper, an improved version of the instruments on Landsat 4 and Landsat 5, and included a 15-meter panchromatic band. [3], The Landsat 6 satellite was built by Martin Marietta Astro Space. The satellite did not achieve orbit because of a ruptured hydrazine manifold. In 1993, with Landsats 4 and 5 both beyond their design lives, the loss of Landsat 6, and a nascent Landsat 7 program, it seemed that a data gap was imminent. Landsat 6 carried an Enhanced Thematic Mapper (ETM). Landsat 6 [NASA] The Landsat 6 satellite was a commercial program jointly with the Department of Commerce (NOAA) and EOSAT Company that provided data for a wide range of Earth resources applications including environmental monitoring, natural resource exploration, urban planning, and … The satellite was stabilized to 0.1 degrees in all three axes by using reaction wheels. Landsat 6 was launched on October 5, 1993 on a Titan II rocket from Vandenberg Air Force Base, California, but did not acheive orbit. It was launched on October 5, 1993 with a Titan II launch vehicle, but failed to reach orbit. [2], Even though Landsat 6 separated from the rocket at the appropriate time and place, the satellite failed to reach orbit. It was designed and built by Santa Barbara Research Center, a unit of GM Hughes Electronics. Landsat 6 carried the ETM sensor. The Landsat 6 satellite was a commercial program jointly with the Department of Commerce (NOAA) and EOSAT Company that provided data for a wide range of Earth resources applications including environmental monitoring, natural resource exploration, urban planning, and cartography. It carried an improved suite of instruments.

[2], Martin Marietta and NOAA both convened review boards to investigate the failure. Launch Date: October 5, 1993; Status: lost at launch Sensor: ETM + read about the history of Landsat 6 This caused the satellite to tumble during the burn, resulting in a failure to orbit due to the wasted energy. [2] Landsat 6 omitted the Multi-Spectral Scanner found on its predecessors, but carried an Enhanced Thematic Mapper, which improved on the previous Thematic Mapper by adding a 15m-resolution panchromatic band.

A sketch of what the Landsat 6 satellite would have looked like in orbit. Landsat 6 On October 5, 1993 the EOSAT-owned Landsat 6 failed at launch after not reaching the velocity necessary to obtain orbit. Data collected from the sensors was stored on tapes and transmitted to ground stations at 85 Mbit/s. The spacecraft was powered by one solar array that had single-axis articulation and produced 1430 W. The power was stored in two NiCd batteries that had a capacity of 100 Ah. Eight spectral bands, including a pan and thermal band: Band 4 Near-Infrared (0.76 - 0.90 µm) 30 m, Band 5 Near-Infrared (1.55 - 1.75 µm) 30 m, Band 7 Mid-Infrared (2.08 - 2.35 µm) 30 m, Band 8 Panchromatic (PAN) (0.52 - 0.90 µm) 15 m, Ground Sampling Interval (pixel size): 30 m reflective, 120 m thermal, Power provided by a single sun-tracking solar array and two 50 Ampere-Hour (AHr), Nickel Cadmium (NiCd) batteries, Attitude control provided through four reaction wheels (pitch, yaw, roll, and skew); three 2-channel gyros with celestial drift updating; a static Earth sensor; a 1750 processor; and torque rods and magnetometers for momentum uploading, Orbit control and backup momentum unloading provided through a blow-down monopropellant hydrazine system with a single tank containing 270 pounds of hydrazine, associated plumbing, and twelve 1-pound-thrust jets. 1.2, April 2020): U.S. Geological Survey Fact Sheet 2015–3081, 4 p., https://doi.org/10.3133/fs20153081. Landsat-6 The objective of the Landsat-6 spacecraft, owned by EOSAT, was to continue the Landsat program. On October 5, 1993 the EOSAT-owned Landsat 6 failed at launch after not reaching the velocity necessary to obtain orbit. Landsat 1 • Landsat 2 • Landsat 3 • Landsat 4 • Landsat 5 • Landsat 6 • Landsat 7 • Landsat 8. The satellite carried the Enhanced Thematic Mapper, an improved version of the instruments on Landsat 4 and Landsat 5, and included a 15-meter panchromatic band. Landsat 6 was launched on October 5, 1993 on a Titan II rocket from Vandenberg Air Force Base, California, but did not acheive orbit. Landsat is a joint effort of... U.S. Geological Survey, 2016, Landsat—Earth observation satellites (ver. Yet, Landsat-5 continued to operate until December 2012, when USGS announced that the satellite would be decommissioned. This failure resulted in the spacecraft tumbling instead of accumulating enough energy to reach its planned orbit.

Geographic Names Information System (GNIS), Mapping, Remote Sensing, and Geospatial Data, Earth Resources Observation and Science (EROS) Center, Earth Resources Observation and Science Center. Landsat 6, equipped with upgraded versions of the instruments on Landsat 5, was designed to carry forward the Landsat program.

The ETM sensor would have collected data in the same seven spectral bands and at the same spatial resolutions as the TM instrument on Landsats 4 and 5. [4], The Enhanced Thematic Mapper was designed and manufactured by Santa Barbara Research Center. Since fuel could not reach the reaction engines, the satellite could not maintain attitude control during the apogee kick motor (AKM) burn. It was sensitive to light from the green through near infrared wavelengths of the electromagnetic spectrum. Sketch of Landsat 6 satellite in orbit. Landsat 6 omitted the Multi-Spectral Scanner found on its predecessors, but carried an Enhanced Thematic Mapper, which improved on the previous Thematic Mapper by adding a 15m-resolution panchromatic band. [4], The satellite was constructed from aluminum and used graphite struts. Both boards determined that Landsat 6 did not achieve orbit due to a ruptured hydrazine manifold, and recommended a task force investigate hydrazine feed systems that were more reliable. Landsat 6 was to circle the Earth in a sun-synchronous orbit at an altitude of 705 km (438 miles), inclined at 98.2 degrees (slightly retrograde), and the Worldwide Reference System-2 (WRS-2) path/row system. The Enhanced Thematic Mapper (NASA Landsat Science). The ETM instrument also included an eighth band with a spatial resolution of 15 m. The eighth band was known as the sharpening band or panchromatic band. [2], "Landsat 6 failure attributed to ruptured manifold", https://en.wikipedia.org/w/index.php?title=Landsat_6&oldid=946541138, Creative Commons Attribution-ShareAlike License, This page was last edited on 20 March 2020, at 20:50. The Details. The ETM sensor would have collected data in the same seven spectral bands and at the same spatial resolutions as the TM instrument on Landsats 4 and 5. Landsat 6 had a hydrazine propulsion system. The data are useful to a number of applications including forestry, agriculture, geology, regional planning, and education. Martin Marietta Astro Space designed and built the satellite, and Earth Observation Satellite Company (EOSAT) was responsible for development of the spacecraft and ground system under a Commerce Department contract. The ETM instrument also included an eighth band with a spatial resolution of 15 m. Landsat 6 carried an Enhanced Thematic Mapper (ETM).

Since 1972, Landsat satellites have continuously acquired space-based images of the Earth’s land surface, providing data that serve as valuable resources for land use/land change research. It was launched on October 5, 1993 with a Titan II launch vehicle, but failed to reach orbit. Like Landsat 4 and Landsat 5, the satellite would have a repeat cycle of 16 days, an equatorial crossing time of 10:00 a.m. +/- 15 minutes, and produce a scene size of 170 km x 185 km (106 miles x 115 miles).

Landsat 6, equipped with upgraded versions of the instruments on Landsat 5, was designed to carry forward the Landsat program.

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