Results 101 to 110 of about 11,252 (231)

Aircraft aeroelasticity and structural dynamics research at the NASA Langley Research Center: Some illustrative results [PDF]

open access: yes
Highlights of nine different research studies are described. Five of these topics relate directly to fixed-wing aircraft and range from flutter studies using relatively simple and inexpensive wind-tunnel models to buffet studies of the vertical tails of ...
Cazier, F. W., Jr.   +1 more
core   +1 more source

Response studies of rotors and rotor blades with application to aeroelastic tailoring [PDF]

open access: yes
Various tools for the aeroelastic stability and response analysis of rotor blades in hover and forward flight were developed and incorporated in a comprehensive package capable of performing aeroelastic tailoring of rotor blades in forward flight.
Friedmann, P. P.
core   +1 more source

VIBRATIONS OF THIN WINGS IN THE SEPARATED FLOW. CALCULATION AND EXPERIMENT

open access: yesНаучный вестник МГТУ ГА, 2016
The results of computational and experimental study of thin wings flutter in separated and unseparated flow are presented. The effect of flutter suppressing in the presence of separation is found.
V. V. Ovchinnikov, Yu. V. Petrov
doaj  

Effects of nonlinear aerodynamics and static aeroelasticity on mission performance calculations for a fighter aircraft [PDF]

open access: yes
During conceptual design studies of advanced aircraft, the usual practice is to use linear theory to calculate the aerodynamic characteristics of candidate rigid (nonflexible) geometric external shapes.
Foss, Willard E., Jr.   +2 more
core   +1 more source

Numerical and Experimental Study of Flutter in a Realistic Labyrinth Seal

open access: yesInternational Journal of Turbomachinery, Propulsion and Power
Labyrinth seals are commonly used in turbomachinery in order to control leakage flows. Flutter is one of the most dangerous potential issues for them, leading to High Cycle Fatigue (HCF) life considerations or even mechanical failure.
Oscar Bermejo   +5 more
doaj   +1 more source

NASA Lewis Research Center/University Graduate Research Program on Engine Structures [PDF]

open access: yes
NASA Lewis Research Center established a graduate research program in support of the Engine Structures Research activities. This graduate research program focuses mainly on structural and dynamics analyses, computational mechanics, mechanics of ...
Chamis, C. C.
core   +1 more source

Reduced Order Modeling for Transonic Aeroservoelastic Control Law Development [PDF]

open access: yes
As aircraft become more flexible, aeroelastic considerations become increasingly important and complex, particularly for transonic flight where nonlinearities in the flow render linear analysis tools less effective.
Bartels, Robert E.   +3 more
core   +1 more source

Structural dynamics branch research and accomplishments for fiscal year 1987 [PDF]

open access: yes
This publication contains a collection of fiscal year 1987 research highlights from the Structural Dynamics Branch at NASA Lewis Research Center. Highlights from the branch's four major work areas, Aeroelasticity, Vibration Control, Dynamic Systems, and ...

core   +1 more source

Experimental and Numerical Investigation of Post-Flutter Limit Cycle Oscillations on a Cantilevered Flat Plate [PDF]

open access: yes, 2017
Futuristic aircraft designs and novel aircraft such as High Altitude Long Endurance (HALE) involve a higher level of structural flexibility than in conventional aircraft.
Antonio Bernardo, Guimaraes Neto   +5 more
core  

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