Page 16: of Maritime Reporter Magazine (November 1981)

Foundation Incompatibility" by

William I.H. Budd, Shashank V.

Karve, Donald Liu, Joao G. de

Oliveira and Paul C. Xirouchakis.

SYNOPSIS—The authors deal with the problem of compatibility between hull deflections and dis- tortion limits inposed by the op- erational requirements of the main propulsion machinery com- ponents. They evaluate the rela- tionship between manufacturer's requirements and the structural design of machinery foundations.

Presented are a set of recommen- dations capable of helping the de- signer meet the requirements of foundation stiffness. Also included are suggested methods and tech- niques of structural analysis and design to assist the designer.

Paper No. 12. "A Coal-Fired

Fluidized-Bed Steam Generator

Before you invest in a HF-SSB radio, use our standard to measure it.

These days especially, it makes sense to measure the performance of competitive radios before you buy.

We'll be happy to help you compare any SSB trans- ceiver with the 1.6-30MHz, 96 channel synthesized

RF-230M. For starters, here are some questions to ask in analyzing whether the competition is anywhere near our state-of-the-art:

How much does it cost to change frequencies?

The RF-230M features an Electronically Alterable

Read Only Memory. We designed it to save you money and minimize downtime when you need to make a frequency change.

Has reliability been proven?

We've incorporated a variety of engineering innova- tions in the RF-230M to assure you of unsurpassed reliability. And we've proven its dependable perform- ance in both on-board and limited coast applications over more than 4 years.

Are other radios as simple to operate?

With features like one-knob full automatic tuning, we've designed the RF-230M to be one of the easiest-to-use marine radios.

What about accessories?

Harris has a full line of accessories designed around the building block concept to give you exceptional flexibility in adapting the RF-230M to your precise requirements—ARQ-RTTY and 1 KW operation.

If you have any questions for us, please write or call.

We'd like to tell you about all the other ways we've engineered the RF-230M to be the standard in marine transceivers.

For further information, please contact:

HARRIS CORPORATION

RF Communications Division

Marine Marketing 1680 University Avenue

Rochester, N Y. 14610

Tel: 716-244-5830. Telex: 978464 for Marine Application" by J.T.

Schroppe and R.L. Gamble.

SYNOPSIS — The fluidized-bed combustion process is described and its application to steam gen- erators is shown through the de- scription of demonstration proj- jects. A preliminary design for a marine coal-fired fluidized-bed steam generator and the asso- ciated system arrangement is shown and described. The system presented can provide for effici- ent coal-fired propulsion while meeting expected emissions con- trol requirements.

Paper No. 13. "Hydrodynamic

Added-Mass Matrix of Vibrating

Ship Based on a Distribution of

Hull Surface Sources" by William

S. Vorus and Schelte Hylarides.

SYNOPSIS — This paper pre- sents a matrix formulation for ship vibratory added-mass based on the source distribution meth- od. For example, the method is applied to a Series 60 hull. The added-mass matrix developed is used in a comparison with the

Lewis J-Factor method for one- dimension ship vibration.

Paper No. 14. "Effects of Hull and Propeller Design Changes on the Vibration of a Lakes

Freighter" by F. Everett Reed,

Noel L. Bassett and John A.

Norton.

SYNOPSIS—This paper reports on actions to reduce the vibration on the Charles E. Wilson. A flow- control tunnel was fitted on the original ship. Later, highly skewed blades were fitted to the original controllable-pitch propel- ler hub. Vibration levels associ- ated with each change, and mod- el, full scale and calculated hull pressures in the flow-control tun- nel are reported.

SNAME To Sponsor

First Exhibition

In 1982

SNAME has something dif- ferent in store for the 1982 annual meeting—the organiza- tion's 90th.

The society will sponsor an "International Maritime Expo- sition" to be held in conjunc- tion with the highly acclaimed technical program. It is the first time the prestigious soci- ety has opened its doors to exhibitors.

The exhibition will be held at the same site as the annual meeting—the New York Hilton

Hotel, on November 17 through 19, 1982. For more informa- tion on exhibit space for ma- rine product manufacturers, suppliers, and service firms,

Write 90 on Reader Service Card

Write 528 on Reader Service Card * I • '