Tether Climber Competition

From mechanical design to control systems, this challenge is all about building robotic climbers capable of ascending a vertical tether. Teams must combine precision, power, and adaptability to simulate the vehicles that could travel from Earth to orbit.

Tether Climber Competition

From mechanical design to control systems, this challenge is all about building robotic climbers capable of ascending a vertical tether. Teams must combine precision, power, and adaptability to simulate the vehicles that could travel from Earth to orbit.

Tether Climber Competition

From mechanical design to control systems, this challenge is all about building robotic climbers capable of ascending a vertical tether. Teams must combine precision, power, and adaptability to simulate the vehicles that could travel from Earth to orbit.

Engineering the Climb

The Climber Competition is the headline challenge of WSPEC. It tasks teams with building robotic climbers capable of ascending a vertical tether while transporting a payload using only stored electrical energy.

The heart of the system

As a critical component of the space elevator concept, climbers must be efficient, reliable, and capable of operating in extreme conditions over long distances. Their development involves challenges in robotics, materials, power systems, and control, making them a central focus in turning the vision of continuous, scalable space access into reality.

the challenge

Design, build, and operate a tether-climbing robot that

Ascends a vertical flat tether under its own stored electrical power

Ascends a vertical flat tether under its own stored electrical power

Ascends a vertical flat tether under its own stored electrical power

Carries a set of standardized payload cubes

Carries a set of standardized payload cubes

Carries a set of standardized payload cubes

Operates safely and reliably, either autonomously or under ground control

Operates safely and reliably, either autonomously or under ground control

Operates safely and reliably, either autonomously or under ground control

Climbers must complete a valid run to the top of the tether, carrying a minimum payload, and come to a stop under defined control conditions .

Technical Requirements

Download the full rulebook

Rules & Parameters

• Max total mass: 50 kg (climber + payload) • Dimensions: 1m x 1m footprint, max 2m height • Center of gravity: Must stay within ±100 mm of the tether (X/Y axes) • Tether: Flat, 35 mm wide, 2 mm thick, para-aramid fiber

Accepted Technologies / Restrictions

• Only stored electrical energy is permitted • No chemical propulsion or aerodynamic lift • Climber must stop automatically at the top and when input is lost • Payload cubes and data-logging units (PlMU) provided by organizers

Environmental Conditions

• Competition is hosted outdoors unless otherwise stated • Climbers must function in ambient weather conditions • No manipulation of the tether is allowed during installation

What is the process for entering the WSPEC competition?

The competition has two main stages: 1. Application & Technical Plan – The first step is to officially enter the competition and submit a technical plan for your climber. During this stage, teams are encouraged to raise funds, secure sponsors, and refine their designs. 2. Pre-Competition Verification – About three months before the competition, teams must submit video footage showing their climber in testing. At this point, an application fee of $1,000 applies. We understand funding can be a challenge, so fee waivers or partial reductions are possible, please reach out to us for assistance. Our goal is to ensure that every team is prepared to compete successfully.

Rules & Parameters

• Max total mass: 50 kg (climber + payload) • Dimensions: 1m x 1m footprint, max 2m height • Center of gravity: Must stay within ±100 mm of the tether (X/Y axes) • Tether: Flat, 35 mm wide, 2 mm thick, para-aramid fiber

Accepted Technologies / Restrictions

• Only stored electrical energy is permitted • No chemical propulsion or aerodynamic lift • Climber must stop automatically at the top and when input is lost • Payload cubes and data-logging units (PlMU) provided by organizers

Environmental Conditions

• Competition is hosted outdoors unless otherwise stated • Climbers must function in ambient weather conditions • No manipulation of the tether is allowed during installation

What is the process for entering the WSPEC competition?

The competition has two main stages: 1. Application & Technical Plan – The first step is to officially enter the competition and submit a technical plan for your climber. During this stage, teams are encouraged to raise funds, secure sponsors, and refine their designs. 2. Pre-Competition Verification – About three months before the competition, teams must submit video footage showing their climber in testing. At this point, an application fee of $1,000 applies. We understand funding can be a challenge, so fee waivers or partial reductions are possible, please reach out to us for assistance. Our goal is to ensure that every team is prepared to compete successfully.

Rules & Parameters

• Max total mass: 50 kg (climber + payload) • Dimensions: 1m x 1m footprint, max 2m height • Center of gravity: Must stay within ±100 mm of the tether (X/Y axes) • Tether: Flat, 35 mm wide, 2 mm thick, para-aramid fiber

Accepted Technologies / Restrictions

• Only stored electrical energy is permitted • No chemical propulsion or aerodynamic lift • Climber must stop automatically at the top and when input is lost • Payload cubes and data-logging units (PlMU) provided by organizers

Environmental Conditions

• Competition is hosted outdoors unless otherwise stated • Climbers must function in ambient weather conditions • No manipulation of the tether is allowed during installation

What is the process for entering the WSPEC competition?

The competition has two main stages: 1. Application & Technical Plan – The first step is to officially enter the competition and submit a technical plan for your climber. During this stage, teams are encouraged to raise funds, secure sponsors, and refine their designs. 2. Pre-Competition Verification – About three months before the competition, teams must submit video footage showing their climber in testing. At this point, an application fee of $1,000 applies. We understand funding can be a challenge, so fee waivers or partial reductions are possible, please reach out to us for assistance. Our goal is to ensure that every team is prepared to compete successfully.

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W SPEC Inc. is a 501(c)(3) nonprofit organization
EIN: 39-2358038

2362 Nostrand Ave #4
Brooklyn NY 11210

GET THE UPDATES FIRST

W SPEC Inc. is a 501(c)(3) nonprofit organization
EIN: 39-2358038

2362 Nostrand Ave #4
Brooklyn NY 11210

GET THE UPDATES FIRST

W SPEC Inc. is a 501(c)(3) nonprofit organization
EIN: 39-2358038

2362 Nostrand Ave #4
Brooklyn NY 11210