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What major errors were the results of faulty measurement?In: Engineering |
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None of the Mars Rovers were lost.
The Mars Climate Orbiter was lost due to an inadequately documented computer program. The program produced estimated total thruster impulse. The results were thought to be in Newtons but actually were in pounds-force. This led do incorrect trajectory estimates. The trajectory was thought to be safely above the planet for Mars orbit insertion, but it was much lower. The spacecraft flew through the atmosphere during orbit insertion, causing the spacecraft to be destroyed by aeroheating.
The lesson that should have been learned there was that the English system of measurements must be expunged from the face of the earth (and the rest of the solar system). But it wasn't. NASA still uses a mish-mashes of mixed units.
Hubble's problems were due to an incorrectly assembled optical instrument that was used to grind the mirror. Then the same instrument was used to verify that the mirror had been correctly ground.
The Mars Climate Orbiter was lost due to an inadequately documented computer program. The program produced estimated total thruster impulse. The results were thought to be in Newtons but actually were in pounds-force. This led do incorrect trajectory estimates. The trajectory was thought to be safely above the planet for Mars orbit insertion, but it was much lower. The spacecraft flew through the atmosphere during orbit insertion, causing the spacecraft to be destroyed by aeroheating.
The lesson that should have been learned there was that the English system of measurements must be expunged from the face of the earth (and the rest of the solar system). But it wasn't. NASA still uses a mish-mashes of mixed units.
Hubble's problems were due to an incorrectly assembled optical instrument that was used to grind the mirror. Then the same instrument was used to verify that the mirror had been correctly ground.
First answer by ID1081194813. Last edit by Pgr-fw. Contributor trust: 327 [recommend contributor]. Question popularity: 28 [recommend question]
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