Masters Theses


"Unmanned aerial vehicles possessing vertical takeoff and landing capabilities are receiving growing interest within the aerospace industry, as these aircraft can be operated in areas and on missions that preclude the use of conventional aircraft. This thesis presents the development and analysis of the triple tilt-duct aircraft configuration, an aircraft design suited for future generations of VTOL UAVs. The development of a conceptual design for a small-scale, "proof of concept" tilt-duct UAV is presented, culminating in a description of the final conceptual design. The methodology for a detailed analysis of the performance and the stability and control characteristics of the tilt-duct UAV design is outlined, along with the results from these analyses. The tilt-duct UAV has good stability and handling characteristics when in horizontal flight mode, but is highly unstable when hovering or in vertical flight mode. A study of the motion of the tilt-duct aircraft during transition maneuvers between horizontal and vertical flight modes is also presented; schemes for performing optimal transition maneuvers and maintaining adequate pitch control during the transitions are given as well. A flight simulation model was utilized to test the performance and stability and control of the tilt-duct UAV. Though it was not possible to accurately simulate transition maneuvers with the software package used, it was possible to obtain reasonable measurements of the aircraft's performance and response to control inputs. An outlook for the triple tilt-duct configuration is given, along with suggestions for future research. It is felt that the triple tilt-duct configuration is a viable design for future VTOL aircraft"--Abstract, page iii.


Finaish, Fathi

Committee Member(s)

Eversman, Walter
Akers, Thomas D.


Mechanical and Aerospace Engineering

Degree Name

M.S. in Aerospace Engineering


Missouri Space Grant Consortium


University of Missouri--Rolla

Publication Date

Fall 2006


xxiv, 265 pages

Note about bibliography

Includes bibliographical references (pages 262-264).


© 2006 Peter Gabriel Cross, All rights reserved.

Document Type

Thesis - Restricted Access

File Type




Subject Headings

Vertically rising aircraft
Drone aircraft -- Design and construction
Stability of airplanes

Thesis Number

T 9072

Print OCLC #


Electronic OCLC #


Link to Catalog Record

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