Title of dissertation: DYNAMICS AND AEROELASTICITY OF HOVER CAPABLE FLAPPING WINGS: EXPERIMENTS AND ANALYSIS Beerinder Singh, Doctor of Philosophy, 2006 Dissertation directed by: Professor Inderjit Chopra Department of Aerospace Engineering This dissertation addresses the aerodynamics of insect-based, bio-inspired, flapping wings in hover. An experimental apparatus, with a bio-inspired flapping...

Pollinator communities are composed of diverse groups insects, with radically different life histories and resource needs. Blow flies known to visit a variety economically important crop plants. Larval blow develop by feeding on decaying animals. Some fruit growers place carrion farms during the flowering season attract adult (Calliphoridae). However, efficacy these “stink stations” has not bee...

Measurements of the sound field near an F-35B during vertical landing operations are reported. Data are presented and discussed from the approach, hover, and descent of the aircraft, and compared with ground run-up measurements. Overall levels are comparable to published values for the F-35A at 50% engine thrust ratio during ground run-ups. Onethird-octave spectra are also presented, and spectr...

Small fixed-wing UAS that are able to hover combine the station keeping abilities of a rotary wing platform and the extended range of conventional aircraft. Current autopilots for these vehicles rely on inertial measurements plus airspeed to transition from forward flight to hover, accumulating appreciable position error during the transition. Once in hover, a combination of inertial and GPS da...

Objective: This study aims at investigating helicopter pilots’ strategies to achieve ship deck landing.Background: Helicopter maritime operations are challenging, especially when it comes landing on the moving decks of small ships, such as frigates, which can lead dramatic accidents.Method: Expert pilots were requested fly full maneuver from approach touchdown in an immersive simulator. Two sea...

plants firing fuel oil produce huge quantities of fly ash as solid waste, which needs to becharacterized prior to its proper management. it is worth mentioning that the published literature lackcomprehensive information on the characteristics of such fly ash. characteristics of fuel oil fly ash producedat selected power (pp) and water desalination (dp) plants were determined. the results showed...

Title of Thesis: CFD Analysis of a Slatted UH-60 Rotor in Hover Degree Candidate: Yashwanth Ram Ganti Degree and Year: Master of Science, 2012 Thesis directed by: Associate Professor James D. Baeder Department of Aerospace Engineering The effect of leading-edge slats (LE) on the performance of a UH-60A rotor in hover was studied using the OverTURNS CFD solver. The objective of the study was to ...

The screaming on most rollercoasters begins almost as soon as anticipation of the stomach-churning descent begins. Even in the dark we know that we are plummeting from the instant we tip over the summit, and the secret of the thrill lies deep in gravity sensors in our inner ears and intestines. As soon as the descent is launched and we begin free falling, the effect of gravity on the sensors is...

Most insect embryos develop from a monolayer of cells around the yolk, but only part of this blastoderm forms the embryonic rudiment. Another part forms extra-embryonic serosa. Size and position of the serosa anlage vary between species, and previous work raises the issue of whether such differences co-evolve with the mechanisms that establish anteroposterior (AP) polarity of the embryo. AP pol...