Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 132 for “"propellers"”.
-
Investigation of air propellers
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1912
-
Marine propellers in unsteady flow
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1989.
-
Design of Propellers for Minimum Noise
Made available in DSpace on 2014-12-14T04:42:03Z (GMT). No. of bitstreams: 1 7804196.pdf: 4898791 bytes, checksum: 33a465c74c254c828a9b42a6e454cd7a (MD5) Previous issue date: 1977
-
Propellers in yawed flow at low speeds
The performance characteristics of propellers at high speeds have been obtained in the past and are well documented. But neither their performance at low Reynolds numbers, nor their behavior in yaw are clearly known. Knowledge of the aerodynamic characteristics of these propellers is instrumental …
-
Inspection and feature extraction of marine propellers
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1997.
-
Numerical Simulations of Supercavitating Propellers and Hydrofoils
… of URANS and BEM solvers for supercavitating propellers (SCPs) and hydrofoils (SCHs) with non-conventional sectional profiles. The previously developed BEM at the VT Innovative Ship Design Lab (VT-iShip) is extended upon to allow for supercavitating profiles with truncated trailing edges (TE). …
-
Structural design of shape-adaptive composite marine propellers
… alloy is the most common material for ship propellers but, more recently, composite materials have been used in propeller construction. One of the advantages of the use composite materials for ship propellers is that they allow the possibility of shape-adaptability. A shape-adaptive …
-
Design and cavitation performance of contra-rotating propellers
… architects and marine engineers. Contra-Rotating propellers (CRP) are propulsor configurations offering higher efficiency compared to conventional single propellers by recovering the rotational energy in the propeller slipstream. The application of this type of propulsive device to modern ships …
-
A study of propellers used on sailing auxiliaries.
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1976
-
Nonlinear analysis of cavitating propellers in nonuniform flow
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1993.
-
Experimental investigation of non-uniform flow past propellers
An experimental investigation of non-uniform flow past a 1.615 foot, 3-bladed propeller was conducted in the Virginia Tech 6 foot by 6 foot Stability Wind Tunnel. The free stream velocity was 44.5 ft/sec and the propeller rpm 1400. A screen disk consisting of two circular meshes, one 15 inches in …
-
An alternate approach to the manufacture of ship propellers.
Thesis. 1976. M.S.--Massachusetts Institute of Technology. Dept. of Ocean Engineering.
-
A new theory for the wake of marine propellers.
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Naval Architecture and Marine Engineering, 1971
-
Viscous flow around marine propellers using boundary layer strip theory
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
-
Constrained and unconstrained localization for automated inspection of marine propellers
Thesis (Nav. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1991, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
-
Measurements of Small-Scale Propellers Operating in the Vortex Ring State
The behavior of small-scale propellers operating in vertical descent and through the vortex ring state (VRS) was measured. In particular, a total of 26 propellers with varying diameters (9 to 11 in) were tested in the UIUC 2.8 x 4 ft wind tunnel at low Reynolds numbers to measure the propeller …
-
Development and analysis of panel methods for propellers in unsteady flow
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1990.
-
An improved panel method for the prediction of performance of ducted propellers
… problems of flow around ducts and ducted propellers. One significant development of this method is the application of full wake alignment scheme in which the trailing vortex wake sheets of the blades are aligned with the local flow velocity by also considering the effects of duct and duct …
-
Designed Reduction of Radiated Noise Characteristics from Two-Bladed General Aviation Propellers
… noise generated by two bladed general aviation propellers, through design. The Aircraft Noise Prediction Program - Propeller Analysis System (ANOPP-PAS) is used to predict the noise and performance characteristics for an industry typical reference propeller as well as for the final quiet and …
-
Noise And Propulsive Efficiency Interactions For Rotors And Propellers At Constant Thrust
<p>In the emerging market of Advanced Air Mobility (AAM), aerospace companies have been designing and prototyping electric and hybrid vehicles to revolutionize travel. These vehicles must have low noise and particulate emissions while also having enough propulsive efficiency to complete the …
Page 1 of 7