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Biology

Aeroponics

Plants suspended in air, roots drinking directly from the hexagonal channel system — aeroponics is the Nanolab's primary growing method, avoiding the complications of substrate-water interaction in microgravity.

How It Works in HexaFlow

In microgravity, plants grow on the TDC Delivery System with roots absorbing water directly from the channel system — sidestepping the complications of substrate-water interaction in zero gravity.

Plant clips secure vegetation both on Earth and in space. Inserted into TDC holes, they grip the stem firmly enough that the team verified retention by inverting the TDC with kale threaded through both clips for one full minute — plants stayed put.

Aeroponics is the primary growing method because it removes the substrate from the equation — no growing medium for water to interact with in microgravity. The AI vision model reads root moisture from the camera feed and waters only when the roots are dry, a continuous feedback loop that prevents root rot.

The customizable water/nutrient reservoir is built from recyclable materials — a plastic bag, a VEX fitting, and a heat sealer — a modular design that scales across HexaFlow configurations and future expansion.

Why Aeroponics Wins

Dry Roots
Triggered Watering
AI vision waters only when roots are dry, helping prevent root rot
Suspended
Root System
Roots hang in air — maximum oxygen exposure
Faster
Root Gas Exchange
Roots are constantly exposed to the air
None
Gravity Required
System works in microgravity environments

Build & Verification

Plant clips securing kale in TDC
Plant clips securing kale in the TDC
TDC held upside down with kale in the plant clips
Inversion test — TDC held upside down
Kale threaded through the plant clips in the TDC
Kale secured in the plant clips
Heat-sealed water and nutrient reservoir with VEX fitting
Water/nutrient reservoir — heat-sealed bag with VEX fitting
  • Leafy greens
  • Vegetables
  • Small flowering plants
  • Kale — verified in plant-clip retention trials
  • Root vegetables — grow deformed without soil pressure
Works Cited (8)