Small-satellite mission brief
Yenra | Updated September 28, 2026
Guide: https://yenra.com/sat/small.html

User / mission question / delivered result:
Measurement accuracy / spatial detail / timing requirement:
Payload / observation duration / pointing requirement:
Mass category / CubeSat format if applicable / deployer specification:
Orbit assumptions / sunlit minutes / eclipse minutes:
Power by mode: baseline W; added payload W x hours; added transmitter W x hours:
Energy per cycle Wh / conversion losses / margin / end-of-life assumptions:
Peak simultaneous load W:
Data generated MB/day / compression assumptions / required delivery time:
Useful downlink Mbps / usable contact minutes/day / ground station:
Thermal hot and cold cases:
Integrated mass / center of mass / deployment interfaces:
Ground operations owner / recovery / end-of-mission plan:
For each claim: measured, modeled, supplier specification or placeholder?
Constellation revisit definition / target coordinates / cloud effects / delivery delay:
Unresolved dependency / owner / verification:
Worked example only: 8 W x 1.5 h + 20 W x (10/60) h +
12 W x (8/60) h = 16.933 Wh per orbit before losses and margin.
Data: 100 decimal MB x 8 / 1 Mbps = 800 s = 13 min 20 s.
One 600 s contact at 1 Mbps carries at most 75 MB at that useful rate.
These are consistency examples, not flight hardware requirements.

Source context: This worksheet accompanies the linked guide and its primary-source references.