An Analysis of the Sailing Efficiency of the Junk Yacht Boleh
Year: 2013 Language: english Author: Happs J. Genre: Technical book Publisher: Environment University of Southampton Format: PDF Quality: Scanned pages Pages count: 122 Description: The Junk Yacht Boleh, designed and built by Cmdr. R.A. Kilroy DSC RN in 1949, is currently undergoing a major restoration in Portsmouth, UK. This is being organised by a charity set up for the purpose, the Boleh Trust. Consequently there is renewed interest in this historic vessel, and particularly in her unique original rig and sail plan. This report provides an assessment of the eciency and ecacy of this rig through comprehensive wind tunnel testing of a model at 5:31 of full scale, in the University of Southampton’s 7’x5’ wind tunnel. From the investigations full scale global loads on the rig are presented for a range of wind speeds representing a likely operational envelope for the vessel. Issues with the design of the rig are identified and discussed, and the results are compared against data from literature for alternative rig designs. Provisional optimum sailing attitudes are presented, along with approximate predictions of the speed of the vessel under sail. The results are concluded to be of reasonable accuracy. Additional investigations of the interaction between multiple lifting surfaces are undertaken using Computational Fluid Dynamics (CFD)
Contents
Screenshots
5
Happs J. An Analysis of the Sailing Efficiency, 2013.pdf
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You cannot download files in this forum
An Analysis of the Sailing Efficiency of the Junk Yacht Boleh
Language: english
Author: Happs J.
Genre: Technical book
Publisher: Environment University of Southampton
Format: PDF
Quality: Scanned pages
Pages count: 122
Description: The Junk Yacht Boleh, designed and built by Cmdr. R.A. Kilroy DSC
RN in 1949, is currently undergoing a major restoration in Portsmouth, UK.
This is being organised by a charity set up for the purpose, the Boleh Trust.
Consequently there is renewed interest in this historic vessel, and particularly
in her unique original rig and sail plan. This report provides an assessment of
the eciency and ecacy of this rig through comprehensive wind tunnel testing
of a model at 5:31 of full scale, in the University of Southampton’s 7’x5’ wind
tunnel.
From the investigations full scale global loads on the rig are presented for a
range of wind speeds representing a likely operational envelope for the vessel.
Issues with the design of the rig are identified and discussed, and the results are
compared against data from literature for alternative rig designs. Provisional
optimum sailing attitudes are presented, along with approximate predictions of
the speed of the vessel under sail. The results are concluded to be of reasonable
accuracy.
Additional investigations of the interaction between multiple lifting surfaces
are undertaken using Computational Fluid Dynamics (CFD)
Contents
Screenshots
Happs J. An Analysis of the Sailing Efficiency, 2013.pdf
Download [8 KB]
Share