Presentations at the AIAA Aerodynamic Decelerator Systems conference

The presentations covered a broad range of topics, including the ExoMars parachute system, advanced parachute testing techniques, adaptive drop test deployment algorithms, and computational fluid dynamics (CFD) analysis of planetary entry vehicles.

Groundbreaking Parachute Load Measurement System

One of the papers introduced a newly developed system for measuring asymmetric tension in parachute suspension lines during inflation. Vorticity designed and tested an array of tensometers capable of measuring individual line loads in-situ during parachute deployment.

The system provides unprecedented insight into load distribution across the parachute lines and can be used to establish more accurate asymmetric load factors for future parachute designs.

Tensometer installed on a parachute line

CFD Analysis and Adaptive Timing Algorithms

Thomas Hancock presented two papers during the conference.

The first focused on CFD studies of the ExoMars entry capsule. The work was conducted to improve understanding of parachute aerodynamics within the wake of Mars entry vehicles and to support the validation and refinement of aerodynamic models used in parachute system design.

Mach field for ExoMars entry module and second main parachute

His second presentation described a new adaptive timing algorithm used during the latest ExoMars high-altitude drop test. The algorithm combines meteorological and vehicle dynamic data to continuously adjust deployment timing and achieve the target parachute inflation load.

Drop test targeting

ExoMars Parachute System Development

John Underwood delivered the opening presentation on the second day of the conference. His talk covered the design and qualification of the ExoMars parachute system, as well as the work undertaken since 2022 to prepare the system for launch in 2028.

The ExoMars Rosalind Franklin Mission (RFM) is the European Space Agency's latest planetary lander mission and will deliver the 300 kg Rosalind Franklin rover to the surface of Mars.

ExoMars parachute sequence

Further Information

Copies of the conference papers can be found at on the AIAA website.

These activities were funded by the European Space Agency (ESA).