Question 1

What is CubeTwin?

Accepted Answer

CubeTwin is an educational CubeSat electrical-energy simulator and 12-week learning portal. It uses transparent models and simulated data to connect orbit, sunlight, battery behaviour, mission activities and power faults.

Question 2

How does a CubeSat battery survive eclipse?

Accepted Answer

During sunlight, the solar array supplies spacecraft loads and charges the battery. In eclipse, the battery supplies those loads. Teams size the energy store, account for conversion losses, protect a reserve and schedule demanding activities around available energy.

Question 3

What is a CubeSat electrical power system?

Accepted Answer

The Electrical Power System (EPS) generates, stores, manages and distributes electrical power. It includes solar generation, batteries and power management and distribution (PMAD) electronics.

Question 4

Do I need aerospace or coding experience?

Accepted Answer

No. Start with the bundled 3U LEO Beginner Mission, run the simulation and follow the plain-language lessons. The 12-week guide introduces the science, hand calculations, software and verification in stages.

Question 5

Is CubeTwin connected to a real spacecraft?

Accepted Answer

No. All data is simulated in your browser. CubeTwin is not flight software, live telemetry, certified analysis or a validated operational digital twin. Calibration against a specific physical test article is future work.

Question 6

What does the Monte Carlo probability mean?

Accepted Answer

It is the fraction of seeded simulated trials completing all activities without unmet load or undervoltage under the selected uniform input uncertainty. The confidence interval describes sampling uncertainty. Neither value is a prediction of real spacecraft reliability.

Question 7

Can I save my work and use the workbook offline?

Accepted Answer

Export the complete scenario or run as JSON, export telemetry as CSV, or use Print the Workbook and choose Save as PDF. Workbook notes and weekly progress are stored only in this browser when local storage is available. Downloads can be used offline; the portal is not an offline application.

Question 8

Who is responsible for CubeTwin?

Accepted Answer

CubeTwin is an ISHAVASYAM.ORG education and research initiative hosted within the EV.ENGINEER engineering ecosystem. Commercial engineering, where applicable, is handled separately by iTelematics Software Private Limited under explicit agreements. UFlight™ is referenced for the broader aerospace HUMS ecosystem.