Structural design of a VTOL twin- tiltwing drone concept with a distributed hybrid electric propulsion system

Composite Cylindrical Shell Buckling: Simulation & Experimental Correlation

Guidelines dating back 50 years, NASA SP-8007, are employed today in the design of thin-walled launch vehicle structures. Due to advances in materials, structural designs, and manufacturing techniques since the publication of SP-8007, the development of new knockdown factors for contemporary launch vehicle structures is an ongoing subject of...

Phase-Specific Stiffness of Sprinting Prostheses: Performance Enhancement of Amputee Sprinting: A Modelling Approach

Running-specific prostheses enable amputee athletes to perform at the highest level. However, current prosthesis design still impairs sprinting performance in multiple ways. An example is the constant mechanical stiffness of the prosthetic devices. The dynamic behaviour of the blade is determined by this property, but it is static and cannot...

Long-term creep behavior of CFRP in actively bent grid shells

Actively bent grid shells are curved structural surfaces made of flexible members. The application is mainly in roof structures. The members, spanning between two supports on the perimeter, are connected at their intersections by joints, and assembled in an initially straight grid. By lifting at a sufficient number of points the straight grid is...