ST-124-M3 inertial platform

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/st-124-m3-inertial-platform

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the system classification?Autonomous Inertial Navigation System (INS)
2. What is the primary navigational inputs?Internal measurements of angular rate and linear acceleration
3. How does the ST-124-M3 know where the spacecraft is?It uses tiny gyroscopes that sense spinning and accelerometers that measure speeding up or slowing down, then it crunches the numbers with computer math.
4. Why does the ST-124-M3 not need GPS?In deep space there are no GPS signals, so the platform works on its own inside the spacecraft.

Inertial Navigation System (INS): A self-contained navigation system that uses inertial sensors to compute position, velocity, and orientation without external references.
Gyroscopes: Devices that detect and measure angular velocity, crucial for determining a spacecraft's rotational motion and attitude.
Accelerometers: Sensors that measure linear acceleration, enabling the calculation of velocity and position through integration.
State Vector: A set of variables that completely describe the condition of a dynamic system, typically including position, velocity, and attitude for a spacecraft.