VTechWorks staff will be away for the winter holidays starting Tuesday, December 24, 2024, through Wednesday, January 1, 2025, and will not be replying to requests during this time. Thank you for your patience, and happy holidays!
 

Afterbody drag prediction for conceptual aircraft design

Simple item page
dc.contributor.authorSquire, Douglas J.en
dc.contributor.departmentAerospace Engineeringen
dc.date.accessioned2014-03-14T21:46:10Zen
dc.date.adate2009-09-19en
dc.date.available2014-03-14T21:46:10Zen
dc.date.issued1992en
dc.date.rdate2009-09-19en
dc.date.sdate2009-09-19en
dc.description.abstractWith the increasing performance demands placed on aircraft, the nozzle is becoming a much more versatile component. This versatility is increasing the afterbody complexity and the difficulty in afterbody drag prediction. This thesis documents a computationally inexpensive method for estimating the afterbody drag of aircraft during the conceptual design stage. The design and creation of a new hybrid approach to afterbody drag prediction is discussed. This hybrid approach uses the Integral Mean Slope Truncated Method in place of an equivalent body of revolution pressure drag. Corrections or drag deltas are then applied to the Integral Mean Slope Truncated afterbody drag estimate. These drag deltas account for various geometric effects and three-dimensional effects. The resulting prediction method is applicable to both axisymmetric and 2-D nozzles. The hybrid approach has been incorporated into ACSYNT Version 2.0.0 (AirCraft SYNThesis), a conceptual aircraft design tool developed at NASA Ames Research Center and Virginia Polytechnic Institute and State University. Comparison of the predictions of the new hybrid approach with those of a more complex and much more computationally expensive method show generally good agreement.en
dc.description.degreeMaster of Scienceen
dc.format.extentxii, 173 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-09192009-040348en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09192009-040348/en
dc.identifier.urihttp://hdl.handle.net/10919/44858en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1992.S685.pdfen
dc.relation.isformatofOCLC# 35920105en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1992.S685en
dc.titleAfterbody drag prediction for conceptual aircraft designen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineAerospace Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
LD5655.V855_1992.S685.pdf
Size:
7.93 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Masters Theses