Clapp Presents HIAD Paper at 23rd Aerodynamic Decelerator Systems Technology Conference

Josh Clapp recently presented a paper titled, “Structural Response of Hypersonic Inflatable Aerodynamic Decelerator Braided Tube Components and Elements” at the 23rd Aerodynamic Decelerator Systems Technology Conference in Daytona Beach, Florida.

The abstract reads:

“Hypersonic Inflatable Aerodynamic Decelerators are currently of interest to NASA because they are potentially an enabling technology for new opportunities in space exploration. Many full-scale structural experiments have been performed in recent years on components or complete test articles, but they have all been relatively complex. The objective of this study was to conduct relatively simple independent experiments on individual components of structural elements. Following this, bending tests were performed on beam test articles that are straight, but otherwise identical in material composition and construction to the torus articles that have been involved in experiments performed by others. Multiple photogrammetry systems were used to help better understand the behavior of these structures as they were subjected to bending moments large enough to cause loss in reinforcing cord pre-tension, or wrinkling, which results in greatly reduced global structural stiffness. The development of constitutive models, based on independent component-level testing to serve as input to finite-element models, is described. Finite-element models of the beam bending tests using the previously mentioned constitutive models are described. The response of the beams in the finite-element models i compared to the experimentally measured response. The model-predicted response was found to agree quite well with the measured response.”

View the paper, here:

Citation: Clapp, J.D., Young, A. C., Davids, W. G., and Goupee, A. J. “Structural Response of Hypersonic Inflatable Aerodynamic Decelerator Braided Tube Components and Elements,”23rd Aerodynamic Decelerator Systems Technology Conference, AIAA 2015-2165, Daytona Beach, Florida, March 30 – April 2, 2015.