Archives: Glossary Terms

TSTI Admin No Comments April 6, 2026

system maintenance and support

Mission operations systems must be developed and maintained. System development can be a major project all by itself e.g. building a new launch complex. Ongoing maintenance and support of complex hardware and software systems used by operators is a huge task.

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TSTI Admin No Comments April 6, 2026

systems management

rigorously and efficiently manageIdentify risks while there is still time to react and put in place mitigation strategies to minimize or eliminate risks. Risk is defined in two dimensions, probability of occurrence and consequence. Decompose top-level requirements to lower-level requirements in order to trace them and note changes. Pay particular attention to interfaces. More the […]

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TSTI Admin No Comments April 6, 2026

team management

Establishing effective team communicationAn assembly of spacecraft components that collect, process, store, and transmit payload-mission and bus-housekeeping data. The communication and data-handling subsystem (CDHS) acts as the ears, brain, and mouth of the spacecraft • It has two primary portions — communication and data handling • It translates raw data from the payloads and subsystems […]

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TSTI Admin No Comments April 6, 2026

technical leadership

Balances broad technical domain knowledge, problem solving, engineering instinct, problem solving, creativity, leadership and communicationAn assembly of spacecraft components that collect, process, store, and transmit payload-mission and bus-housekeeping data. The communication and data-handling subsystem (CDHS) acts as the ears, brain, and mouth of the spacecraft • It has two primary portions — communication and data […]

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TSTI Admin No Comments April 6, 2026

technology

Technical aspects of space missions. TechnologyThe science and technology of spaceflight. It includes designing, building, testing, and deploying spacecraft, launch vehicles, launch complexes, and many more space-related facilities. More Readiness Level (TRL) is a common metric used to determine where a technologyThe science and technology of spaceflight. It includes designing, building, testing, and deploying spacecraft, […]

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TSTI Admin No Comments October 7, 2024

third body effects

GravityA projectile with a prescribed path that cannot be altered after it has burned its propellant and the laws of ballistics govern its course. When gravity is the only force on it, its path is elliptical. More from the SunWe use the angle of incidence, θ, to determine how much solar energy hits a solar […]

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TSTI Admin No Comments April 10, 2026

trajectory

The pathThe elliptical-shaped path a satellite takes in going from one circular orbit to another as part of a Hohmann Transfer. More an object follows through space.

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TSTI Admin No Comments April 10, 2026

transfer orbit

In order to get from one orbitThe oval-shaped path that a spacecraft follows. Orbits come in various shapes and sizes, but each one has a purpose: to let the spacecraft do its job. Higher orbits require more propellant to get a spacecraft there. More to a second orbitThe oval-shaped path that a spacecraft follows. Orbits […]

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TSTI Admin No Comments June 20, 2024

true anomaly

The angleWe use the angle of incidence, θ, to determine how much solar energy hits a solar panel. This angle lies between a line perpendicular to the cell and the Sun line. More along the orbital path from perigee to the spacecraft’s position vector. Tells us the location of the spacecraft in its orbitThe oval-shaped […]

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TSTI Admin No Comments October 7, 2024

two-body equation of motion

The two-body equation of motionThe two-body equation of motion, used to analyze spacecraft motion around Earth assumes: there are only two bodies—the spacecraft and Earth, and Earth’s gravitational pull is the only force acting on the spacecraft. More, used to analyze spacecraft motionA rotating object’s spin rate. We use the right-hand rule to determine its […]

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