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Author : T. Ng
Release : 1990
Genre :
Kind : eBook
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Book Synopsis Aerodynamic Control of NASP-type Vehicles Through Vortex Manipulation by : T. Ng
Download or read book Aerodynamic Control of NASP-type Vehicles Through Vortex Manipulation written by T. Ng. This book was released on 1990. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Release : 1993
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Aerodynamic Control of NASP-type Vehicles Through Vortex Manipulation, Volume 4 by :
Download or read book Aerodynamic Control of NASP-type Vehicles Through Vortex Manipulation, Volume 4 written by . This book was released on 1993. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Release : 1993
Genre :
Kind : eBook
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Book Synopsis Aerodynamic Control of NASP-type Vehicles Through Vortex Manipulation. Volume 3: Wing Rock Experiments by :
Download or read book Aerodynamic Control of NASP-type Vehicles Through Vortex Manipulation. Volume 3: Wing Rock Experiments written by . This book was released on 1993. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Adm Nasa
Release : 2018-11-18
Genre : Science
Kind : eBook
Book Rating : 598/5 ( reviews)
Book Synopsis Aerodynamic Control of Nasp-Type Vehicles Through Vortex Manipulation by : National Aeronautics and Space Adm Nasa
Download or read book Aerodynamic Control of Nasp-Type Vehicles Through Vortex Manipulation written by National Aeronautics and Space Adm Nasa. This book was released on 2018-11-18. Available in PDF, EPUB and Kindle. Book excerpt: Forebody Vortex Control (FVC) is an emerging technology that has received widespread and concentrated attention by many researchers for application on fighter aircraft to enhance aerodynamic controllability at high angles of attack. This research explores potential application of FVC to a NASP-type configuration. The configuration investigated is characterized by a slender, circular cross-section forebody and a 78 deg swept delta wing. A man-in-the-loop, six-degress-of-freedom, high-fidelity simulation was developed that demonstrates the implementation and advantages of pneumatic forebody vortex control. Static wind tunnel tests were used as the basis for the aerodynamic characteristics modeled in the simulation. Dynamic free-to-roll wind tunnel tests were analyzed and the wing rock motion investigated. A non-linear model of the dynamic effects of the bare airframe and the forebody vortex control system were developed that closely represented the observed behavior. Multiple state-of-the-art digital flight control systems were developed that included different utilizations of pneumatic vortex control. These were evaluated through manned simulation. Design parameters for a pneumatic forebody vortex control system were based on data collected regarding the use of blowing and the mass flow required during realistic flight maneuvers. Smith, Brooke C. and Suarez, Carlos J. and Porada, William M. and Malcolm, Gerald N. AERODYNAMIC CHARACTERISTICS; AIRCRAFT CONTROL; CONTROL SURFACES; CONTROLLABILITY; FLIGHT CONTROL; FLIGHT SIMULATION; VORTICES; ANGLE OF ATTACK; BLOWING; DELTA WINGS; DESIGN ANALYSIS; FIGHTER AIRCRAFT; SWEPT WINGS...
Author : National Aeronautics and Space Administration (NASA)
Release : 2018-07-02
Genre :
Kind : eBook
Book Rating : 556/5 ( reviews)
Book Synopsis Aerodynamic Control of Nasp-Type Vehicles Through Vortex Manipulation. Volume 1 by : National Aeronautics and Space Administration (NASA)
Download or read book Aerodynamic Control of Nasp-Type Vehicles Through Vortex Manipulation. Volume 1 written by National Aeronautics and Space Administration (NASA). This book was released on 2018-07-02. Available in PDF, EPUB and Kindle. Book excerpt: Water tunnel tests were conducted on a NASP-type configuration to evaluate different pneumatic Forebody Vortex Control (FVC) methods. Flow visualization and yawing moment measurements were performed at angles of attack from 0 deg to 30 deg. The pneumatic techniques tested included jet and slot blowing. In general, blowing can be used efficiently to manipulate the forebody vortices at angles of attack greater than 20 deg. These vortices are naturally symmetric up to alpha = 25 deg and asymmetric between 25 deg and 30 deg angle of attack. Results indicate that tangential aft jet blowing is the most promising method for this configuration. Aft jet blowing produces a yawing moment towards the blowing side and the trends with blowing rate are well behaved. The size of the nozzle is not the dominant factor in the blowing process; the change in the blowing 'momentum, ' i.e., the product of the mass flow rate and the velocity of the jet, appears to be the important parameter in the water tunnel (incompressible and unchoked flow at the nozzle exit). Forward jet blowing is very unpredictable and sensitive to mass flow rate changes. Slot blowing (with the exception of very low blowing rates) acts as a flow 'separator'; it promotes early separation on the blow side, producing a yawing moment toward the non-blowing side for the C(sub mu) range investigated. Suarez, Carlos J. and Ng, T. Terry and Ong, Lih-Yenn and Malcolm, Gerald N. Unspecified Center..
