Parachute science (inequity in research relationships between Global North and South scientists) has known detrimental impacts on researchers conservation. Using two international datasets of English non-English-language studies testing conservation interventions, we compared the continents which were conducted to those authors affiliated. We found that a substantial proportion English-language...

Parachutes have been closely linked to many space missions. Many vehicles launched into had parachutes on board for recovery or landing deceleration, and relative research mainly adopts computer simulation methods due high test costs. In order investigate the aerodynamic force surrounding flow field structure of in process vehicle return, a physical model is established main parachute used spac...

this paper deals with the ejection system that can be implemented in a civil aircraft. It is important for an aircraft to have an ejection seat in case the plane meets an accident in a battle or during test flight and the pilot has to bail out to save his or her life. The mechanism involves lifting of the pilot to a safe distance away from the aircraft and then deploying the parachute. As there...

Models are presented for the aerodynamic coefficients of Supersonic Ringsail and Disk-Gap-Band parachutes as functions of total porosity, λT, Mach number, M, and total angle of attack, αT (when necessary). The source aerodynamic coefficients data used for creating these models were obtained from a wind tunnel test of subscale parachutes. In this wind tunnel test, subscale parachutes of both par...

In advanced cancers of hepatobiliary and pancreatic lesions, major vascular resection and reconstruction are necessary to accomplish curative resection. Stenosis of vascular anastomosis is a concern in case of portal or superior mesenteric venous anastomosis with different vascular calibers. We attempted to apply parachute anastomosis in such a situation, which has often been used in the field ...

We present a parallel ®nite element computational method for 3D simulation of ̄uid±structure interactions (FSI) in parachute systems. The ̄ow solver is based on a stabilized ®nite element formulation applicable to problems involving moving boundaries and governed by the Navier±Stokes equations of incompressible ̄ows. The structural dynamics (SD) solver is based on the total Lagrangian descripti...

We contribute to a growing focus on variation in diffusion processes by examining the ways in which contested practices are modified as they spread among adopters. Expanding on prior diffusion accounts, we argue that the extensiveness and similarity of a practice will vary in response to both populationand organization-level mechanisms. To examine these issues, we study variation in “golden par...

Tragopogon dubious is a small herbaceous plant that uses the wind as dispersal vector for its seeds. The seeds are attached to stalked parachutes which increase the aerodynamic drag force on the seeds. This decreases their rate of descent, and hence increases the total distance traveled. The relatively large natural parachute of Tragopogon dubious is an ideal model in a biomimetic structure owi...