Big gulps require high drag for fin whale lunge feeding

JA Goldbogen, ND Pyenson, RE Shadwick - Marine Ecology Progress …, 2007 - int-res.com
Fin whales Balaenoptera physalus exhibit one of the most extreme feeding methods among
aquatic vertebrates. Fin whales, and other rorquals (Balaenopteridae), lunge with their …

Passive versus active engulfment: verdict from trajectory simulations of lunge-feeding fin whales Balaenoptera physalus

J Potvin, JA Goldbogen… - Journal of the Royal …, 2009 - royalsocietypublishing.org
Lunge-feeding in rorqual whales represents the largest biomechanical event on Earth and
one of the most extreme feeding methods among aquatic vertebrates. By accelerating to …

An innovative experimental on-road testing method and its demonstration on a prototype vehicle

JC Páscoa, FP Brójo, FC Santos, PO Fael - Journal of mechanical science …, 2012 - Springer
Ground vehicle drag coefficient is herein obtained using an unconventional on-road test in
real scale. At low-Re numbers, and as a function of velocity variations, transition introduces …

Drag of spheroid-cone shaped airship

GE Dorrington - Journal of aircraft, 2006 - arc.aiaa.org
Drag of Spheroid-Cone Shaped Airship Page 1 JOURNAL OF AIRCRAFT Vol. 43, No. 2,
March–April 2006 Drag of Spheroid-Cone Shaped Airship Graham E. Dorrington ∗ Queen …

Motion of a rigid sphere entering and penetrating a deep pool

PK Billa, T Josyula, C Tropea, PS Mahapatra - arXiv preprint arXiv …, 2024 - arxiv.org
In this study, we experimentally examine the behavior of a free falling rigid sphere impacting
normally onto, and penetrating into a quiescent liquid pool. Parameters, which are varied …

Universality considerations for graphing parachute opening shock factor versus mass ratio

J Potvin - Journal of aircraft, 2007 - arc.aiaa.org
THE opening shock factor Ck is a nondimensional ratio corresponding to the maximum drag
force Fmax generated by an inflating parachute (Fig. 1). This ratio is expressed in terms of …

Three-stage model for slider-reefed parafoil inflation

J Potvin, G Peek - 19th AIAA Aerodynamic Decelerator Systems …, 2007 - arc.aiaa.org
This paper discusses the definition and validation of an upgraded model of slider-reefed
parafoil inflation. Unlike an early version which focused only on the slider-descent phase …

The Bi-model: Using CFD in simulations of slowly-inflating low-porosity hemispherical parachutes

J Potvin, M McQuilling - 21st AIAA Aerodynamic Decelerator Systems …, 2011 - arc.aiaa.org
The Bi-model aims at simulating the inflation of low-porosity, but apex-vented flat-circular
canopies. The most important feature of the model involves the use of CFD to obtain canopy …

Momentum-Impulse Balance and Parachute Inflation: Fixed Point Drops

J Potvin - Journal of aircraft, 2007 - arc.aiaa.org
AS documented in [1], the momentum–impulse theorem (or “MI theorem”) is a very useful
tool for analyzing parachute inflation, given that the duration of the net drag force generated …

General mass capture model for swiftly opening parachutes

J Potvin - Journal of aircraft, 2008 - arc.aiaa.org
BECAUSE of its inherent complexity, the modeling of parachute inflation has been most
successful, in terms of fidelity and predictive power, when formulated not only for specific …