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What Is Measurement Risk?

How to understand it and lower it

Understanding measurement risk can mean the difference between a successful mission or a failed one
Credit: NASA Goddard Space Flight Center

Henry Zumbrun
Wed, 04/05/2017 - 12:03
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Body

Imagine that a satellite is launched into space and communications are intermittent. This happens because the satellite is wobbling, which causes connection problems in the receiver. The cause of the wobbling is identified: It is the result of not using a calibration provider with a low enough uncertainty.

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The load cells used to measure the amount of fuel stored in the satellite must be almost perfect. However, if a calibration provider doesn’t have the right measurement capability, the load cells won’t be accurate enough to make the measurement. In this case, the result is a wobbling satellite and significant resources needed to fix the problem.

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Comments

Submitted by Stanley Alekman on Wed, 04/05/2017 - 10:39

The graphs suggest a commercial program for the calculations.

Is there a commercial program to automate the calculations and present the graphics you depict in the article?

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Submitted by ccwerner55 on Wed, 04/05/2017 - 14:01

In reply to The graphs suggest a commercial program for the calculations. by Stanley Alekman

Commercial software

Stanley

Take a look at Minitab. It should be useful for this type of data gathering and presentation.

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