3 edition of Aerodynamic parameters of High-Angle-of-Attack Research Vehicle (HARV) estimated from flight data found in the catalog.
Aerodynamic parameters of High-Angle-of-Attack Research Vehicle (HARV) estimated from flight data
by National Aeronautics and Space Administration, Langley Research Center in Hampton, Va
Written in English
|Statement||Vladislav Klein, Thomas P. Ratvasky, Brent R. Cobleigh.|
|Series||NASA technical memorandum -- 102692.|
|Contributions||Ratvasky, Thomas P., Cobleigh, Brent R., Langley Research Center.|
|The Physical Object|
Recent research (Morelli, ; Morelli and Klein, ) has produced a new optimal input design technique which addresses these issues. The new technique was used to design optimal inputs for aerodynamic parameter estimation flight tests at high angle of attack for the F High Angle of Attack Research Vehicle (HARV).Cited by: CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): A technique for designing optimal inputs for aerodynamic parameter estimation was flight tested on the F High Angle of Attack Research Vehicle (HARV). Model parameter accuracies calculated from flight test data were compared on an equal basis for optimal input designs and conventional inputs at the same flight.
Accurate data are necessary for the identification of aerodynamic parameters at high angle of attack and in spinning flight. Modern sensors and microelectronic devices are employed in a stall/ spin data acquisition system that will be tested in a Schweizer by: Aerodynamic parameter identification for symmetric projectiles: An improved gradient based method Aerospace Science and Technology, Vol. 30, No. 1 Identification of aerodynamic coefficients of a kinetic energy projectile from flight dataCited by:
Aerodynamic Parameter Estimation of an Unmanned Aerial Vehicle Based on Extended Kalman Filter and Its Higher Order Approach Li Meng, Liu Li School of Aerospace Engineering Beijing Institute of Technology Beijing, China e-mail: [email protected] S.M. Veres School of Engineering Sciences University of Southampton Southampton, UKCited by: Aerodynamics Wolf-Heinrich Hucho Scope Basic Principles Peculiarities of Vehicle Aerodynamics Related Fields History of Vehicle Aerodynamics Survey “Borrowed” Shapes The Era of the Streamline Parameter Studies One-Volume Bodies The “Bathtub” Body Commercial VehiclesFile Size: 63KB.
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Aerodynamic parameters of High-Angle-of-Attack Research Vehicle (HARV) estimated from flight data [microform] / Vladislav Klein, Thomas P. Ratvasky, Brent R. Cobleigh National Aeronautics and Space Administration, Langley Research Center Hampton, Va Aerodynamic parameters of the High-Angle-of-Attack Research Aircraft (HARV) were estimated from flight data at different values of the angle of attack between 10 degrees and 50 degrees.
The main part of the data was obtained from small amplitude longitudinal and lateral : Kindle. A PRELIMINARY design aerodynamics force model has been developed for determining the aerodynamic force on complete vehicles from takeoff to orbital : Gary Harloff.
High Angle-of-Attack Aerodynamics. Annual Review of Fluid Mechanics Vol. (Volume publication date January ) Aerodynamic Damping and Compressibility Effects Photo printed with permission from the Special Collections Research Center, University of Chicago Library.
Figure 3: Chandra's first letter to Heisenberg announcing the Cited by: aerodynamic drag which (apart from when braking) is generally detrimental to lap-times.
The drag acts to slow the vehicle, and hinders the effect of available drive power and reduces fuel economy. Wings, in automotive use, are not constrained by the same parameters as aircraft, and thus higher.
of launch vehicles are modeled using panel. method, to study the effects of geometric. parameters such as number of strap-ons, the. ratio of strap-on radius to core stage radius, and.
the gap between the core and strap-ons on the. vehicle’s aerodynamic characteristics. This research paper analysed the influence of aerodynamic disturbance on vehicle’s dynamic parameters.
The vehicle dynamics were formulated from the Newton’s Second Law for modelling the vehicle. The vehicle was built using rigid body frames, mass and multi-body signal blocks of MapleSim platform.
Vehicle aerodynamics includes three interacting flow fields: • flow past vehicle body • flow past vehicle components (wheels, heat exchanger, brakes, windshield), • flow in passenger compartment. Approaches in vehicle aerodynamics 1 Adaptation of shapes from other fields Airship.
Research Motivating Problem: Aerodynamics plays an essential role in the total driving resistance and hence fuel consumption of vehicles.
New upcoming legislations on permissible CO 2 – emissions and increasing fuel prices will push vehicle manufacturers to develop vehicles with a low fuel consumption.
As a consequence the aerodynamic. The aerodynamic interaction between two or more vehicles can alter vehicle bal- ance and directly affects all safety aspects.
Stock cars (e.g., NASCAR), for example,Author: Joseph Katz. 3/10/ Transports: As discussed previously in terms of basic transport configuration aerodynamics, the primary high angle of attack problem is the suppression and control of pitchup and avoidance of deep stall.
Get this from a library. Aerodynamic parameters of High-Angle-of-Attack Research Vehicle (HARV) estimated from flight data. [Vladislav Klein; Thomas P Ratvasky; Brent R Cobleigh; Langley Research. ABSTRACT. Drag reduction of road vehicles continues to be the holy grail of aerodynamicists with renewed importance of aerodynamics as OEMs strive to reduce CO 2 and improve fuel economy.
New legislation such as Worldwide harmonized Light vehicles Test Procedure (WLTP) is increasing the emphasis on real world boundary conditions (with moving ground wind tunnel testing) and vehicle. Aerodynamic parameters of the High-Angle-of-Attack Research Aircraft (HARV) were estimated from flight data at different values of the angle of attack between I0° and The main part of the data was obtained from small amplitude longitudinal and lateral maneuvers.
A small number of large amplitude maneuvers was also used in the estimation. Abstract: This paper is primarily concentrated with determining aerodynamic characteristics and choosing the best angle of attack at a maximum lift and low drag for the FX aerofoil at a low Reynolds number and a speed of 20m/s and 30m/s.
aerodynamic designs vehicles. The aerodynamic drags of a road vehicle is responsible for a large part of the vehicle’s fuel consumption and contribute up to 50% of the total vehicle fuel consumption at highway speeds.
Review on the research performance of active and passive flow control on the vehicleCited by: 8. lateral-directional aerodynamic characteristics of missiles at angles of attack up to 90°. The new methodology used to extend the prediction program to 90° angle of attack and to include rotational rate and nonuniform effects is described.
Comparisons to independent experimental data are presented to demonstrate the unique qualities of the Size: KB.
I AERODYNAMIC PARAMETERS OF THE NAVION AIRPLANE EXTRACTED FROM FLIGHT DATA By William T. Suit Langley Research Center SUMMARY An iterative method, which is characterized as a maximum-likelihood minimum- variance technique, was used to extract the aerodynamic parameters of a Navion airplane from flight Size: 2MB.
A technique for designing optimal inputs for aerodynamic parameter estimation was flight tested on the F High Angle of Attack Research Vehicle (HARV). Model parameter accuracies calculated from flight test data were compared on an equal basis for optimal input designs and conventional inputs at the same flight condition.
Heavy vehicle aerodynamics and fuel efficiency. This paper reviews the aerodynamics drag losses which make the vehicles to utilize large capacity engines.
(G Buresti, ) carried out a research on Methods for the drag reduction of bluff bodies and their application to heavy road- vehicles in which they stated that in order to reduceFile Size: 3MB.
sis on high-angle-of-attack research resulted from the philosophy that modern fighter aircraft should be capable of controlled flight at high angles of attack. Two of the flight research programs at the NASA Dryden Flight Research Facility utilize the F High Alpha Research Vehicle Cited by: 6.Research Article Preliminary Study on Aerodynamic Control of High-Angle-of-Attack Slender Body Using Blowing from Penetrating Flow Channels AyaneSato, 1 HiroyukiNishida, 2 andSatoshiNonaka 3 Department of Mechanical Systems Engineering, Tokyo University of Agriculture and Technology, - - Cited by: 2.or prove—that aerodynamic predictions are correct until vehicle performance is measured at actual flight conditions.
In the case of the shuttle, preflight predictions needed to be accurate enough to establish sufficient confidence to conduct the first orbital flight with a crew on board. This dictated that the aerodynamic test.