Skip to content
The 2025–2026 soil-analysis rover prototype assembled on a workbench
/ Technical DivisionDRACO Division

Payload

Electronics & SensorsEmbedded SoftwareMechanical IntegrationMission Testing
/ OverviewA Rocket With Something To Do

Every year, a different machine

Payload builds the mission system that gives each rocket a purpose beyond flight — combining mechanical design, electronics, programming, and testing to complete the objective the competition sets that year.

Because the objective changes every cycle, so does the hardware. The division has built a walking robot, an aircraft, a sealed capsule, two rovers, and a helicopter — and started each one from a blank page.

/ ArchiveSeven Cycles

The payload record

One mission per competition year, newest first. The through-line is not a single machine — it is a division that rebuilds its entire discipline stack annually and keeps flying.

2025 – 2026

Soil-analysis rover

The current cycle: a rover built to reach the ground and sample it. Wide printed wheels for loose terrain and a front collection head, shown here as an assembled prototype during fit checks.

3D-printed soil-analysis rover prototype with wide white wheels and an orange front collection head, on a workbench

2024 – 2025

Full-vehicle payload integration

Payload does not stop at the payload. This vehicle-level section view places the electronics bay, its bulkheads, and the payload volume inside the airframe — the drawing Launch Vehicle and Payload work from together to confirm everything physically fits.

CAD2024 – 2025
Transparent CAD section view of the whole rocket showing the internal bulkheads, electronics boards, and payload bay

2023 – 2024

Coaxial-helicopter STEMnaut lander

Two counter-rotating rotor sets on a single shaft — a coaxial helicopter built to carry the mission's STEMnaut crew and descend under its own control. Photographed here during ground checks before flight.

Coaxial helicopter payload with two counter-rotating rotor sets on a single shaft, standing on a cone during ground testing

2022 – 2023

Self-righting tracked rover

A tracked rover that had to survive being packed in a rocket, released, and then recover from whatever orientation it landed in. The design pack covers the retention interface, the release mechanism, self-righting legs, a 360° camera mast, and the six-inch shell it all had to fit inside.

CAD2022 – 2023
Multi-view CAD sheet of a tracked rover annotated with self-righting legs, retention release mechanism, camera, and the payload shell it packs into

2021 – 2022

Instrumented capsule

A sealed cylindrical capsule sized to the body tube, carrying a single-board computer and its supporting electronics on an internal rail. The transparent shell in the render is how the division checks clearance and cable routing before anything is machined.

CAD2021 – 2022
CAD render of a cylindrical payload capsule with a transparent red shell revealing a single-board computer mounted inside

2020 – 2021

Quadcopter deployment concept

A four-rotor aircraft designed to be carried inside the airframe and released in flight. The CAD shows the folding-arm structure, camera mount, single-board computer, and landing gear packed into the volume a rocket body tube allows.

CAD2020 – 2021
CAD render of a quadcopter payload with green propellers, camera mount, single-board computer, and landing gear

2019 – 2020

Six-legged walking robot

The earliest payload in the team's record: a servo-driven hexapod built around a single microcontroller board, with every leg independently actuated. Walking gait rather than wheels — a deliberately hard first problem in coordinated actuation.

Six-legged robot with black articulated legs, servo motors, and a microcontroller board wired on a workbench
/ DetailRetention & Release

Getting there is half the mission

A payload spends the entire ascent clamped inside a body tube under launch loads. It has to hold, then let go, then work — and every one of those three has to be designed and tested separately.

CADStowed configuration
CAD render of the tracked rover stowed inside the transparent payload tube with its retention rails and springs
The rover in its stowed state — rails, retention hardware, and the clearance it needs to slide free once the airframe opens.
Drive test
And the same rover built and driving. A design is not verified until the hardware moves on its own.
/ ScopeCore Responsibilities

What Payload owns

01

Electronics & sensor system design

Choosing, wiring, and powering the sensors that let the payload perceive anything at all.

02

Embedded systems & programming

The onboard software that runs the mission — unattended, once, with no chance to intervene.

03

Mechanical design & integration

Making the machine fit, mount, survive launch loads, and release cleanly from the airframe.

04

Mission logic & data handling

Deciding what the payload does after separation, and what it records while doing it.

05

Testing & verification

Proving on the bench and in the field that the sequence works before it has to work in flight.

/ StackTools & Skills

What members work with

  • Embedded systems
  • Microcontrollers & sensors
  • C / C++ / Python
  • PCB & circuit design
  • CAD & mechanical integration

Payload is the division where mechanical, electrical, and software engineering have to agree with each other — a member who joins for one of the three usually leaves having done all three.

/ Why It MattersImpact on DRACO

The bottom line

Payload turns each flight into a mission. It is where mechanical, electrical, and software engineering converge to achieve a real objective in the air — and the reason a DRACO launch is measured by more than altitude.

Apollo astronaut with the Lunar Roving Vehicle on the Moon

/ Join Payload

Next year's machine has not been designed yet

Every cycle Payload starts over with a new objective. If you want to build electronics, write embedded software, or design mechanisms that have to work the first time, this is the division.