Non-Pneumatic Wheel design performance for Human Powered Vehicles. Case: NASA HERC (#1683)

Authors

Callata Suxo, Alvaro Daniel

Diaz Palacios, Fabio Richard

Choque Mamani, Laura

Velasquez Enriquez, Marcelo

Valeriano Ramos, Mariel

Vargas Llanquipacha, Adrian

Acarapi Roca, Adrian

Andrade Roque, Dayana

Campos Angulo, Neil

Abstract

Abstract - This research investigates the design and manufacture of non-pneumatic tires (NPTs) utilizing additive manufacturing (AM) techniques for human-powered vehicles (HPVs) operating in challenging terrains, such as those encountered during competitions like NASA’s Human Exploration Rover Challenge (NASA HERC). Traditional pneumatic tires are often susceptible to punctures and require extensive maintenance, rendering them less effective in these demanding environments. In contrast, NPTs provide enhanced puncture resistance and significantly lower maintenance needs, yet their design poses complex challenges concerning load-carrying capacity, traction, and durability. This study leverages the advantages of AM to tackle these challenges, allowing for the creation of intricate geometries and internal structures that can be optimized for specific terrains. Additionally, the research emphasizes the use of flexible materials, particularly thermoplastic polyurethane (TPU), and thoroughly evaluates the influence of various AM processes on the mechanical properties and performance of NPTs. Through rigorous experimental and field-specific testing, our goal is to refine NPT designs, ensuring they meet demanding performance criteria while promoting sustainable manufacturing practices, ultimately contributing to advancements in HPV technology.