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Robert Dexter Conrad Papers, 1909-1961: Finding Aid

Published electronically in December 2013

Summary Information

  • Publisher: United States Naval Academy. Special Collections & Archives.
  • Publisher Address:
    589 McNair Road
    Annapolis, Maryland 21402-5029, USA
    Phone: 410-293-6917
    https://www.usna.edu/Library/sca/index.php
  • Call number: MS 203
  • Location: Special Collections & Archives Department - Manuscripts
  • Title: Robert Dexter Conrad Papers
  • Dates: 1909-1961
  • Size: 5 linear feet (12 manuscript boxes)
  • Creator: Conrad, Robert Dexter, 1905-1949
  • Language(s) of material: English German
  • Abstract: Robert Dexter Conrad was an officer in the United States Navy and a member of the United States Naval Academy Class of 1927. The Robert Dexter Conrad Papers consist of correspondence, charts and drawings, reports, notes, and journal articles. The papers, which are the product of Conrad's work with the Bureau of Construction and Repair and the Bureau of Ships, pertain to research and development in the areas of armor, photoelasticity, turret design, the effects of gun blasts, ship models, propulsion, and other areas related to ship design and construction.

Biography of Robert Dexter Conrad

Robert Dexter Conrad, born on March 20, 1905 in Orange, Massachusetts, graduated from the Naval Academy and was commissioned ensign in June 1927. Following duty aboard U.S.S. Florida, he attended the Postgraduate School at Annapolis and earned a Master of Science degree in naval architecture at Massachusetts Institute of Technology in June 1932. Then ordered to the Portsmouth Navy Yard in New Hampshire, he served there until the fall of 1933, when he took a leave of absence to study at Cambridge University, England. Returning to the United States, he served in the Design and Construction Division and in the Research and Information Section of the Bureau of Construction and Repair; then from August 1937 to June 1939 at the Experimental Model Basin at Washington. Duty at Mare Island followed, and in November 1940, he was appointed Assistant Naval Attache, later Special Naval Observer, at the American Embassy in London.

In January 1942 Conrad returned to Washington. Initially in the Bureau of Ships, he became Head of the Progress and Planning Section in the Office of the Coordinator of Research and Development, Offices of the Secretary of the Navy, in April and remained in that post until May 1945. He was awarded the Legion of Merit for his work during that period. After the end of the war in Europe, Captain Conrad continued his research work through many organizational changes and was eventually designated Director of the Planning Division, Office of Research and Inventions, later the Office of Naval Research. He was awarded the Distinguished Service Medal for his work both during and after the Second World War. Captain Conrad retired in 1947, having developed leukemia. He then went to Brookhaven National Laboratory in Upton, Long Island, where he served as Assistant and/or Acting Director until his death on July 26, 1949.

The Navy's top scientific award, an annual award to the individual making an outstanding contribution in naval research and development, bears Captain Conrad's name. The U.S.S. Robert D. Conrad (AGOR-3), a single screw, diesel-electric oceanographic research ship, was launched and delivered to the Navy in 1962.

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Description of Contents

The Robert Dexter Conrad Papers consist of 5 linear feet of documentation, containing materials relating to research and development work with which Conrad was involved while attached to the U.S. Navy's Bureau of Construction and Repair during the mid- to late 1930s, and the Bureau of Ships in the early 1940s. The collection includes correspondence, charts and drawings, reports, notes, reprints of articles, and other miscellaneous materials.

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Arrangement

The Robert Dexter Conrad Papers are organized into the following three series:

  • Series 1: General Files, 1914-1945
  • Series 2: Notebooks, 1909-1954
  • Series 3: Supplementary Papers, 1930-1961
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Access and Use

Access

Access is unrestricted. All papers originally bearing security restrictions were examined by S. Brewer, USNA Assistant Security Manager, and declared unrestricted and declassified in 1993.

Copyright and Permission

The Robert Dexter Conrad Papers are the physical property of Nimitz Library. Copyright belongs to the authors or creators of the works, or their legal representatives. For further information, consult the Head, Special Collections & Archives.

It is the responsibility of the researcher to secure written permission to publish, reprint, or reproduce material from Special Collections & Archives. The researcher assumes responsibility for infringement of copyright or literary or publication rights. Please contact the Head, Special Collections & Archives for permission to publish and for further information.

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Acquisition and Appraisal

Provenance and Acquisition

Papers on indefinite loan from the Naval Historical Foundation.

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Related Materials

Related Archival Material

Materials pertaining to Conrad's time at the Naval Academy as a midshipman may be found in his Personnel Jacket and Alumni Jacket in Special Collections & Archives, Nimitz Library.

Materials Cataloged Separately

No materials have been removed from this collection.

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Processing and Other Information

Preferred Citation

Robert Dexter Conrad Papers, MS 203

Special Collections & Archives Department

Nimitz Library

United States Naval Academy

Processing Information

Finding aid edited by David D'Onofrio in December 2013. Original processor and finding aid author unknown.

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Subject Headings

These materials have been indexed in the Naval Academy Library online catalog using the following terms. Those seeking related materials should search under these terms.

Name and Subject Terms

  • Armor-plate
  • Conrad, Robert Dexter, 1905-1949
  • Hulls (Naval architecture)
  • Naval Architecture
  • North Carolina (Battleship : BB-55)
  • Photoelasticity
  • Propellers -- Design and construction
  • Ship models
  • Torpedoes -- Design and construction
  • Towing basins -- United States
  • Turrets
  • United States. Navy Dept. Bureau of Construction and Repair
  • United States. Navy Dept. Bureau of Ships
  • Washington (Battleship : BB-56)

Genre Terms

  • Articles
  • Correspondence
  • Drawings (visual works)
  • Manuscripts
  • Reports
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Contents List

Series 1: General Files, 1914-1945 Boxes 1-7

Series Description

Documentation of Conrad's work with the U.S. Navy Bureau of Construction and Repair and Bureau of Ships. The material pertains to such subject matter as horse power curves, the development of armor, photoelasticity, joint riveting, turret design, ship models, torpedoes, the effects of gun blasts, bulkhead design, ship girder strength, ships' wake, and propulsion. Included in the series are letters, memoranda, journal articles, advance papers, handwritten notes, and drawings.

Series Arrangement

Arranged by topic.

Box 1 Folder 1

Effective horse power curves, 1914 May 18-1938 April 29

Effective horse power curves, shaft horse power and RPM curves for various ships, estimated from tests with models conducted for the Bureau of Construction and Repair. 117 sheets. Also 6 photographs and 22 pages of notes.

Armor - Protection, 1920-1940

Box 1 Folder 2
Bureau of Construction and Repair memorandum, 1939 August 1939

Subject: Essays submitted by various officers of the Construction Corps - distribution of for information and study. 17 pages.

Box 1 Folder 2
Report by Conrad on "Armor thickness and penetration", 1936 February 28

2 pages. includes charts of curves. 1 copy with 9 sheets of curves attached, 2 copies with 3 sheets attached. 1 copy of 3 sheets of curves without report.

Box 1 Folder 2
7 charts - range limits, penetration curves, etc., 1930

Naval Proving Ground, Dahlgren, Virginia.

Box 1 Folder 2
Penetration chart for projectiles with major caliber characteristics, 1936 March 25
Box 1 Folder 2
Notes and curves re: "Studies of 5 inch and 6 inch gun protection", 1935

Housed in 1 envelope.

Box 1 Folder 2
"Armor nomograph" folding chart, 1937 November 1
Box 1 Folder 2
Lecture - Student Officers - Summer 1937 - Armor, 1937

Mimeograph copy. 15 pages.

Box 1 Folder 2
Carbon copy of Conrad memorandum, 1940 January 5

Subject: Welding special treatment steel: notes on a discussion with Mr. Bissell. 2 pages.

Box 1 Folder 2
Armor - description of manufacture Ordnance pamphlet no. 7, 1920 October
Box 1 Folder 2
"Notes on ballistics, protection, and battleship design", 1938 June 2

2 pages. Typescript.

Box 1 Folder 3

North Carolina (BB-55) and Washington (BB-56) - Strength calculations for triple 16 inch gun turrets, 1937 August 12

Revised 1938 April 22. 136 pages.

Full-Scale Ship Strength Investigations, 1934-1939

Box 1 Folder 4
Report from Commander, Battle Force, to Chief of the Bureau of Construction and Repair, 1934

Subject: Investigation of Strength of ship structure on Motorshop San Francisco - Forwarding report of. 42 pages.

Box 1 Folder 4
U.S.S. Yorktown, Flight deck load test, 1938 July-August

3 sheets of drawings.

Box 1 Folder 4
"Preliminary structural investigation of U.S.S. Mahan, 1936 October-November

Carbon copy of typescript. 7 pages. 2 photographs and 5 sheets of drawings.

Box 1 Folder 4
"Structural strength investigation of U.S.S. Flusser at sea, 1937

Carbon copy of typescript, 5 pages. 5 photographs and 4 sheets of charts.

Box 1 Folder 4
Notes on "Strength investigations" on U.S.S. Mahan and U.S.S. Flusser, 1937
Box 1 Folder 4
"U.S.S. Bagley (DD-386) - Full scale elastic tests under service conditions", 1939 July

U.S. Experimental Model Basin, Navy Yard, Washington. 16 pages. 9 snapshots of tests clipped to font of report.

Box 1 Folder 5

Armor and protection, 1934 January 13-1935 September 7

26 letters and memoranda, with 35 pages of notes and drafts.

Photoelasticity, 1921-1938

Box 1 Folder 6
Summary list of reports on photoelastic work at Naval Research Laboratory, 1937 February 18
Box 1 Folder 6
"Principles of photoelasticity", undated

Typescript. 5 pages.

Box 1 Folder 6
Frocht, M.M. "A rapid method for the determination of principal stresses across sections of symmetry from photoelastic data", 1938 March

From Journal of Applied Mechanics.

Box 1 Folder 6
Vose, R.W. "An application of the interferometer strain gage in photoelasticity", undated

From Journal of Applied Mechanics.

Box 1 Folder 6
Coker, E.G. "Photo elasticity for engineers", 1920-1921

From General Electric Review, volumes 23 and 24.

Box 1 Folder 7

Research in model basins, undated

Miscellaneous notes.

Box 2 Folder 1

Notes on inspection trips and observations, 1940 December 23-1941 August 17

108 pages.

Riveted Joints - Torpedo BH Type - Model Tests, 1936-1937

Box 2 Folder 2
Memorandum to Commander Cochrane, undated

Subject: Spacing of rows of rivets in butt-strap joints. 6 pages.

Box 2 Folder 2
Notes, undated

2 pages.

Box 2 Folder 2
"Butt strap test joints", 1936-1937

3 drawings.

Box 2 Folder 2
Memorandum on "Tests of riveted joints", 1937 September 23
Box 2 Folder 3

Model Testing Bulletin - Correspondence, 1937 July 15-1940 February 16

Correspondence relating to Conrad's publications in C&R Model Testing Bulletin. 89 letters, 7 pages of notes.

German Methods (Schade's Memos), 1937-1938

Box 2 Folder 4
Schade's "Notes on German design calculations" submitted to BuCon, 1937

Typescript. 65 pages.

Box 2 Folder 4
Extract: "Castellated constructional systems", 1937-1938

From The Welder.

Gayhart's Electric Telemeter and Applications, 1938

Box 2 Folder 5
"Gayhart's electrical displacement gauge", 1938 March 9

Typescript with diagrams. 4 pages.

Box 2 Folder 5
3 sheets of drawings with explanatory notes, 1937 December 21-1938 January 27

Turret Friction Test, 1938-1945

Box 2 Folder 6
Memorandum on an oil flotation scheme, 1945 January 8

Signed J.H.S. Recommends it not be adopted.

Box 2 Folder 6
Drawing for "Proposed oil flotation bearing for full scale ship installation, 1939 March 17
Box 2 Folder 6
Set of 4 drawings for "Turret friction test, Model No. 2 assembly", 1938 April 21-26
Box 2 Folder 6
Conrad memorandum re: tests, undated

1 page.

Box 2 Folder 6
Memorandum to Captain H. E. Saunders from Commander W. P. Roop, 1942 September 3

Subject: Investigation of mechanical devices for rotating heavy equipment. 1 page.

Box 2 Folder 6
Karalitz, M.B. "Oil-pad bearings and driving gears of 200-in. telescope, 1938 July

Photocopy from Mechanical Engineering.

Box 2 Folder 6
"Turret support by flotation on oil", 1938 September

typescript with drawings and photographs.

Box 2 Folder 6
Memorandum from Conrad to Director, 1938 December

Subject: Turret friction investigation: recommendations for further tests. 5 pages, 3 drawings. With attached memorandum for Captain Saunders. Subject: Turret friction bearing design, 1939 March 6. Also attached: 2 page draft submitting proposal officially to Bureau.

Models, 1914-1939

Box 2 Folder 7
Buckingham, E. "Notes on the method of dimensions", 1921 November

From Philosophical Magazine, volume 42.

Box 2 Folder 7
Johansen, F.C. "Research in mechanical engineering by small-scale apparatus, 1929 March

From Institution of Mechanical Engineers Proceedings.

Box 2 Folder 7
Ruge, Arthur C. "Earthquake resistance of elevated water-tanks", 1937 May

From American Society of Civil Engineers Proceedings.

Box 2 Folder 7
Buckingham, Edgar "II. Notes on the dimensional theory of wind tunnel experiments", 1916 January

From Smithsonian Miscellaneous Collections, volume 62, number 4.

Box 2 Folder 7
Ruge, Arthur C. "The determination of earthquake stresses in elastic structures by means of models", 1934 July

From Bulletin of the Seismological Society of America, volume 24, number 3.

Box 2 Folder 7
Donnell, L.H. "Stress model of a complete airship structure", 1938 June

From Journal of Applied Mechanics.

Box 2 Folder 7
Buckingham, Edgar "the use of models for studying the circulation in glass tanks", 1937 January

From Journal of the American Ceramic Society, volume 20, number 1.

Box 2 Folder 7
Daniloff, Michel. "Application of dimensional analysis to stresses in railway tracks", 1939 December 15

From Engineering.

Box 2 Folder 7
Spitzglass, J.M. "Similarity: limitations in its application to fluid flow", undated

From Transactions of the American Society of Mechanical Engineers. Applied Mechanics. 9 pages.

Box 2 Folder 7
Buckingham, E. "Model experiments and the forms of empirical equations", 1915

32 pages.

Box 2 Folder 7
Allen, Richard W. "Some experiences of the use of scale models in general engineering", 1938 August 26, September 9

From Engineering.

Box 2 Folder 7
"Theory of similarity as applied to the motion of liquid-gas mixtures", 1934 November

From Mechanical Engineering.

Box 2 Folder 7
Templin, R.L. "Tests of engineering structures and their models", 1936 October

From ASCE Papers.

Box 2 Folder 7
Buckingham, Edgar. "Model experiments and the forms of empirical equations", 1915 September

From Journal of the American Society of Mechanical Engineers.

Box 2 Folder 7
Gibson, A.H. "The principle of dynamical similarity, with special reference to model experiments", 1924 March 14-April 4

From Engineering. 7 pages.

Box 2 Folder 7
Buckingham, E. "Formulae for the windage of flywheels", 1915 January 15

From The Electrician. 7 pages.

Box 2 Folder 7
Buckingham, E. "Formulae for the windage of steam turbine wheels", 1914 March 13

From Engineering. 3 pages.

Box 2 Folder 7
Buckingham, E. "Leakage through thin clearance spaces", 1923 February 23

From Engineering. 4 pages.

Box 2 Folder 7
Thompson, Paul W. "The use and trustworthiness of small-scale hydraulic models", 1938 April

From Civil Engineering, volume 8, number 4.

Box 2 Folder 7
Tietjens, O.G. "The use of models in aerodynamics and hydrodynamics", 1932 June 27

From Transactions of the American Society of Mechanical Engineers. 9 pages.

Box 2 Folder 7
Miscellaneous notes, bibliographies, abstracts, etc., undated

58 pages.

Physics - General, 1934-1940

Box 2 Folder 8
Crew, William H. "The frontier of modern physics", 1936 August

From Journal of the American Society of Naval Engineers, volume 48, number 3.

Box 2 Folder 8
Therkelsen, Eric. "the mechanical equivalent of heat - its rise and fall", 1934 June

From Mechanical Engineering.

Box 2 Folder 8
Willey, E.J.B. "The electron theory of metals - Part I & II", 1939 January-February

From The Welder.

Box 2 Folder 8
Willey, E.J.B. "the anatomy of the atom - Parts I-III", 1939 September-1940 February

From The Welder.

Effect of Gun Blast, 1932-1936

Box 2 Folder 9
Letter, Inspector of Ordnance in Charge, Naval Proving Ground, Dahlgren, Virginia to Chief of Bureau of Construction and Repair, 1936 May 26

Subject: Tests to determine structural damage due to blast effect of guns. 4 pages, 10 photographs.

Box 2 Folder 9
Conrad memorandum, 1936 June 13

Subject: Tests to determine structural damage due to blast effect of 5"/38 gun. 4 pages.

Box 2 Folder 9
Notes on tests on panels incorporating watertight doors, 1934-1935

23 pages.

Box 2 Folder 9
"Impact deflection gauge", 1932 June

2 charts.

Box 2 Folder 9
Letter transmitting instructions for use of blast gages from Aluminum Company of America, 1936 April 27
Box 3 Folder 1

Torpedo Caissons, etc. - Eggert's Discussions, 1931-1932

20 letters and memoranda.

Flat Plating, 1923-1940

Box 3 Folder 2
Schade's letter to Chief of Bureau of Construction and Repair, 1940 January 17

Subject: Protection of tee-stiffeners against lateral buckling of the flange (tripping).

Box 3 Folder 2
Technical memorandum: J. Vasta. The critical strength of flat plates loaded in shear, 1935 August

U.S. Experimental Model Basin, Washington, DC. 10 pages.

Box 3 Folder 2
Eggert memorandum on Vasta's memorandum, 1935 August 28
Box 3 Folder 2
Taylor, G.I. "The buckling load for a rectangular plate with four clamped edges", 1933 April

From Zeitschrift fur angew. Math. und Mech, volume 13, number 2.

Box 3 Folder 2
Rossell, H.E. "Strength of plating in compression", 1935

Advance print. 6 pages.

Box 3 Folder 2
Vasta, John. "Progress report no. 5. The strength of hull plating under compression - stiffeners and flanges", 1935 January

U.S. Experimental Model Basin, Progress Report No. 5.

Box 3 Folder 2
Vasta, J. "Strength of flat plating loaded in compression with eccentric butt and lap welded joints", 1937 August 16

U.S. Experimental Model Basin memorandum.

Box 3 Folder 2
Muller, Emil. "Uber rechteckige Platten, die langs zweier gegenuberliegenden Seiten auf beigsamen Tragern ruhen", 1926 October

From Zeitschrift fur angew. Math. und Mech, volume 6, number 5.

Box 3 Folder 2
Miles, Aaron J. "Stability of rectangular plates elastically supported at the edges", 1935

From Journal of Applied Mechanics.

Box 3 Folder 2
Wojtaszak, I.A. "Stress and deflection of rectangular plates", 1936

From Journal of Applied Mechanics.

Box 3 Folder 2
Adam, J.L. "Ship structural members", 1940 April 25

From Shipbuilding and Shipping Record.

Box 3 Folder 2
Inglis, C.E. "Stresses in rectangular plates clamped at their edges and loaded with uniformly distributed pressure", 1925 April
Box 3 Folder 2
Abell, T.B. "The behaviour of stiffened thin plating under water pressure", 1923 March
Box 3 Folder 2
Miscellaneous notes, undated

14 pages.

Box 3 Folder 2
Navy Department, Bureau of Aeronautics. Structures Bulletin No. 10, 1934 January 10

7 pages.

Box 3 Folder 2
J. Vasta memorandum, undated

Subject: Critical comments on two MIT theses (1937). 6 pages.

Plated Girder Networks, 1937-1939

Box 3 Folder 3
Translation of Boobnoff and Papkovitch work on "Strength of ship bottom", 1937

23 pages.

Box 3 Folder 3
Design memorandum, undated

Subject: Strength of decks and beams. 9 pages.

Box 3 Folder 3
Krause, A. "Die Tragernetze im Schiffbau un ihre Berechnung durch Annaherungsmethoden", 1938 September 1

From Schiffbau, number 17.

Box 3 Folder 3
Bengston, Henry W. "Ship plating under compression and hydrostatic pressure", 1939

Advance paper. 22 pages.

Tests of Scarphed Strapped Riveted Joints, 1937

Box 3 Folder 4
4 charts of experimental butt strap no. 3 tests, undated
Box 3 Folder 4
Chart of experimental butt joint, specimen no. 6, 1937
Box 3 Folder 4
"Preliminary report: experimental butt joints. Summary of results of tests", 1937 April 26

4 pages.

Box 3 Folder 4
"High efficiency joints in special treatment steel", 1937

25 pages, photographs and charts.

Box 3 Folder 4
Miscellaneous notes, undated

11 pages.

Plated Networks; Orthotropic Plates - Schade, 1938-1939

Box 3 Folder 5
Correspondence relating to Schade's paper on "Bending theory of ship bottom structure" and discussion of paper, 1938-1939

15 letters and 2 papers.

Box 3 Folder 5
Rough calculations for discussion of Schade's 1938 paper, undated

29 pages.

Box 3 Folder 5
"Abstract for presenting Schade's paper", undated

3 pages.

Box 3 Folder 5
Schade, H.A. "Bending theory of ship bottom structure", 1938

Advance paper. 15 pages.

Bulkheads, 1938-1939

Box 3 Folder 6
Letter from Schade to Chief of the Bureau of Construction and Repair, 1937 December 14

Subject: General - Bulkhead stiffener design. 7 pages. Plus memorandum, Subject: Bulkhead stiffener design for intermediate degrees of fixity. 1938 January 7. 5 pages.

Box 3 Folder 6
Miscellaneous notes, undated

6 pages.

Box 3 Folder 6
Soo-Hoo, T.L. "Some short cuts in bulkhead design", 1939 March

From Marine Engineering and Shipping Review.

Instruments, General Papers, 1937-1939

Box 3 Folder 7
Gayhart, E.L. "The application of modern technological developments to research on models with special reference to instrumentation", undated

Mimeograph. 12 pages.

Box 3 Folder 7
Draper, C.S. and Schliestett, G.V. "General principles of instrument analysis", 1939 May

From Instruments.

Box 3 Folder 7
Eastman, Fred S. "The design of flexure pivots", 1937

From Journal of the Aeronautical Sciences.

Box 3 Folder 7
MacFarlane, J.W. "Presenting the oscillograph to the engineer", 1938 June-July

From The Welder.

Box 3 Folder 7
"Strobomeca: the spring wound stroboscopic tachometer", 1939

4 pages.

Box 3 Folder 7
Notes on "Angular accelerometer", 1937 August 20

Photography, undated

Box 3 Folder 8
Notes, undated

3 pages and 1 chart.

Box 3 Folder 8
"The rudiments of multilith operation: history and description of the offset process", undated

5 pages.

Transverse Strength of Ships, 1937

Box 3 Folder 9
Report of Commandant, U.S. Navy Yard, Philadelphia, to Chief of Bureau of Construction and Repair, 1937 May 25

Subject: Battleships Nos. 55 and 56 - Transverse framing - tests of Floors V, VI and VII. 9 pages and chart.

Box 3 Folder 9
Neugartner, G. "Querfestigkeitsuntersuchungen an einem Flusskahn", 1937 December 1

From Werft*Reederei*Hafen, number 23.

Box 3 Folder 10

Armor - Bolts - Keys - Backing, 1919-1939

49 pages of notes and 34 drawings.

Optics, 1936-1939

Box 4 Folder 1
Notes, 1937-1939

6 pages.

Box 4 Folder 1
"Stereo photography of damage torpedo caissons", undated

Copy of typescript. 10 pages.

Box 4 Folder 1
Edgerton, H.E. et al. "High speed photographic methods of measurement", 1937 January

From Journal of Applied Physics.

Box 4 Folder 1
Lambert, Arthur W., Jr. "Parallax and stereoscopic vision as applied to making maps from air photographs", 1936 March-April

From The Military Engineer, volume 28.

Box 4 Folder 2

Hovgaard, W. "Lectures on the theory of elasticity", 1931

Conrad's notes. 357 pages.

CV's, CL's, CA's, 1938

Box 4 Folder 3
Tactical trials, U.S.S. Philadelphia, 1938 August 12-15

62 sheets of curves, 1 page of data.

Box 4 Folder 3
Tactical trials, U.S.S. Yorktown (CV-5), 1938 November 22-23

60 sheets of curves, 1 page of data.

Torpedo Bulkhead Systems, 1919-1938

Box 4 Folder 4
Memorandum, 1933 October 23

Subject: Torpedo defense bulkhead design for new battleships.

Box 4 Folder 4
Memorandum, 1935 November 8

Subject: Strength of riveted joints.

Box 4 Folder 4
"Underwater explosions and torpedo bulkhead systems", 1919-1935

Collection of memoranda and letters. 75 pages.

Box 4 Folder 4
Memorandum for file, 1937 May 10

Subject: Effect of stress waves on damage due to underwater explosion..." 7 pages.

Box 4 Folder 4
"Brief review of torpedo bulkhead tests conducted by C&R, with specific reference to construction of BB 43-44 and to tests of relative merits of British and U.S. systems", undated

21 pages.

Box 4 Folder 4
"Experimental half-scale caissons", 1936 February 1936

1 sheet of drawings.

Box 4 Folder 4
Notes, 1937-1938

4 pages.

Torsional Strength of Ships, 1935, undated

Box 4 Folder 5
Hovgaard, W. "Torsion of rectangular tubes", undated

From Journal of Applied Mechanics. 5 pages.

Box 4 Folder 5
Notes from Westergaard's memoranda re Floating dry dock, circa 1935

30 pages.

Longitudinal Ship Girder Strength, 1931-1937

Box 4 Folder 6
"Strength of ships - general solution for any wave position", 1934-1937

Conrad's notes. 52 pages.

Box 4 Folder 6
Kell, C.O. "Investigations of structural characteristics of destroyers Preston and Bruce", 1931

From Transactions of the Society of Naval Architects and Marine Engineers, volume 39. 23 pages.

Box 4 Folder 6
Roop, W.P. "Elastic characteristics of a naval tank vessel", 1932

Advance paper. 14 pages.

Box 4 Folder 6
Memorandum for Chief Constructor, USN, forwarding copies of advance report on strength tests of Preston and Bruce, 1933 April 10
Box 4 Folder 6
"Strength - 6: cruisers", 1933 May 17-June 5

3 memoranda in 1 envelope.

Box 4 Folder 6
"Preliminary strength calculation - outline of method", 1937

3 procedure descriptions in 1 envelope.

Box 4 Folder 6
"Strength - destroyers", 1933 November 1-1937 June 14

2 reports, 1 letter, and 1 page of notes in 1 envelope.

Box 4 Folder 6
"Strength data on battleships", undated

14 sheets of tables.

Box 4 Folder 6
Miscellaneous tables, 1934 July-1936 January

5 sheets.

Box 4 Folder 7

Dynamic Turret Tests - Models, 1939 January 18-May 22

12 memoranda, letters, and project descriptions.

Turret Foundations, 1917-1938

Box 5 Folder 1
"16 inch turret, No. II", 1917 March 22

4 drawings.

Box 5 Folder 1
Thorbecke. "Der Aufbau schwerer Geschutzurme an Bord von Schiffen", undated
Box 5 Folder 1
"History of design of turret structure", 1925

27 pages.

Box 5 Folder 1
Eggert, E.F. "Comments on report of the Bureau of Standards in connection with the firing of a 14" - 45 gun on July 8 and 13, 1920", undated

7 pages.

Box 5 Folder 1
"Turret strength calculations for BB 55-56", 1937 March

24 pages.

Box 5 Folder 1
"Turret support stresses - and abstract of correspondence between Captain Eggert and the Bureau concerning his analysis of the California firing tests...", 1926

37 pages. Charts.

Box 5 Folder 1
Notes, 1937-1938

51 pages. 2 sheets of curves.

Box 5 Folder 2

Record of Model and Caisson Tests up to 1930 - Stocker and Eggert, undated

218 pages.

Turret Armor (North Dakota Tests), 1924

Box 5 Folder 3
Letter from Board on North Dakota firing to Secretary of the Navy, 1924 June 24

Subject: Test of North Dakota turret. 17 pages.

Box 5 Folder 3
Notes, 1924

8 pages.

Armor - Target Tests, 1911-1938

Box 5 Folder 4
"Barbettes" material, 1937-1938

7 letters or memoranda, 15 drawings, 12 pages of notes.

Box 5 Folder 4
"Belt armor" material, 1937-1938

5 letters or memoranda, 4 drawings, 1 page of notes.

Box 5 Folder 4
"Conning tower" material, 1937-1938

6 letters or memoranda, 7 sheets of drawings, 8 pages of notes.

Box 5 Folder 4
"Armor-target tests" material, 1911-1938

5 memoranda, 5 drawings, 43 pages of notes.

Box 5 Folder 5

Rivet Shear Strength, 1938

6 letters and 2 graphs.

Riveted Joints, General, 1911-1939

Box 5 Folder 6
Hoefer, K. "The new material regulations of the German Lloyd", 1938 March 15

Excerpted from Schiffbau, Schiffahrt und Hafenbau, number 6.

Box 5 Folder 6
Wilson, W.M. et al. "Tests of joints in wide plates", 1931 November

University of Illinois Engineering Experiment Station Bulletin, number 239. 74 pages.

Box 5 Folder 6
Talbot, A.N. and H.F. Moore. "Tests of nickel-steel riveted joints", 1911 February

University of Illinois Engineering Experiment Station Bulletin, number 49. 55 pages.

Box 5 Folder 6
Wilson, N.M. and W.A. Oliver. "Tension tests of rivets", 1930 June

University of Illinois Engineering Experiment Station Bulletin, number 210. 38 pages.

Box 5 Folder 6
Hrennikoff, A. "Work of rivets in riveted joints", 1934

From American Society of Civil Engineers Transactions, volume 99.

Box 5 Folder 6
DuBose, W.G. "Important considerations in the use of high tensile steel rivets in shipbuilding", 1939

Advance paper. 32 pages.

Box 5 Folder 6
Montgomerie, J. "Further experiments on large size riveted joints", 1923

15 pages.

Box 5 Folder 6
Letters and memoranda, 1937 August 24-1939 November 15

4 letters and memoranda.

Box 5 Folder 6
Notes, 1939, undated

25 pages.

Design Data - Miscellaneous Charts, Curves and Reference Tables, 1905-1937, undated

Box 6 Folder 1
"Formulae for determining of scantlings for flat plating and stiffeners...", undated

18 pages.

Box 6 Folder 1
Miscellaneous curves and tables, 1905-1937, undated

9 documents.

Ship Strength - General Papers, 1921-1938, undated

Box 6 Folder 2
Vollrecht, E. "Das Festpunktverfahren im Schiffbau", 1937 December

From Schiffbau, Schiffahrt und Hafenbau, number 23.

Box 6 Folder 2
Dahlmann, W. "Beitrag zu den Festigkeitsfragen des Schiffskorpers", 1937

From Werft*Reederei*Hafen, number 22.

Box 6 Folder 2
Abell, T.B. "A study of the framing of a ship", 1921

From Transactions of the Institute of Naval Architects, volume 63.

Box 6 Folder 2
Mitchell, E.H. "The strength of ships' structures under compressive stresses", 1936

From Transactions of the Institute of Naval Architects, volume 78.

Box 6 Folder 2
Champness, E.L. "Further notes on the relative strength of fine and full cargo vessels", 1928

From Transactions of the Institute of Naval Architects, volume 70.

Box 6 Folder 2
Salet, G. "Strength of ships and materials. A method for determining the natural frequency of vibration for a girder of variable cross-section, and its experimental verification", 1938 April

From The Shipbuilder and Marine Engine-Builder.

Box 6 Folder 2
Notes, undated

19 pages of notes and 1 chart.

Turret Models - 1/8 Scale Static Tests, 1937-1939, undated

Box 6 Folder 3
"Turret model - 1/8 scale, undated

2 sheets of drawings.

Box 6 Folder 3
Letter from E.F. Eggert to Commandant, Navy Yard, Philadelphia, 1938 April 7

Subject: U.S.S. North Carolina (BB-55) and U.S.S. Washington (BB-56) 1/8 scale model for turret foundation - proposed changes in method of deadweight loading.

Box 6 Folder 3
Letter from Conrad to N.W. Gokey commenting on paper written by Gokey, 1939 April 4
Box 6 Folder 3
Fiegehen, E.G. "Load distribution upon crane slewing rollers", 1939 February 24

From Engineering.

Box 6 Folder 3
Notes, 1937-1939

82 pages.

Theory of Ship Waves and Wave Resistance, 1930-1938

Box 6 Folder 4
Havelock, T.H. "Wave patterns and wave resistance, 1934

13 pages.

Box 6 Folder 4
Weinblum, G. "Beitrage zur Theorie des Schiffsoberflache", 1929

From Werft*Reederei*Hafen, number 22/23.

Box 6 Folder 4
Weinblum, G. "Beitrag zur Systematik der Schiffslinien, 1930

From Werft*Reederei*Hafen,number 22.

Box 6 Folder 4
Weinblum, G. "Anwendungen der Michellschen Widerstandstheorie", undated
Box 6 Folder 4
Weinblum, G. "Schiffsform und Wellenwiderstand", 1931
Box 6 Folder 4
Weinblum, G. "Uber den Einfluss der Schiffsform auf die Bewegungen eines Schiffes im Seegang", 1933

From Werft*Reederei*Hafen, number 19/20.

Box 6 Folder 4
Weinblum, G. "Undersuchungen uber den Wellenwiderstand volligerer Schiffsformen", 1934

From Mitteilungen der Preussischen Versuchsanstalt fur Wasserbau und Schiffbau, number 17.

Box 6 Folder 4
Weinblum, G. "Exakte Wasserlinien und Spantflackenkurven, undated

From Mitteilungen der Preussischen Versuchsanstalt fur Wasserbau und Schiffbau, number 8/9.

Box 6 Folder 4
Wigley, W.C.S. "Effects of viscosity on the wave-making of ships", 1937
Box 6 Folder 4
Weinblum, G. "Rechnerische Entwicklung von Schiffsformen", 1938

From Schiffbau, Schiffahrt and Hafenbau, number 8.

Box 6 Folder 4
Weinblum, G. "Schiffsform und Widerstand", undated
Box 6 Folder 4
Wigley, W.C.S. "Ship wave-resistance", 1935

From Transactions of the Institute of Naval Architects, volume 77.

Box 6 Folder 4
Wigley, W.C.S. "Ship wave-resistance: progress since 1930", 1935

From Transactions of the Institute of Naval Architects, volume 77.

Box 6 Folder 4
Wigley, W.C.S. "Ship wave resistance", 1930

From Transactions of the Institute of Naval Architects, volume 72.

Box 6 Folder 4
Notes, undated

4 pages.

Wake and Thrust Deduction, 1920-1938

Box 6 Folder 5
Weitbrecht, H.M. "Thrust deduction on wake (suction)", 1938 June 1

Translation from Schiffbau, Schiffahrt und Hafenbau.

Box 6 Folder 5
Kempf, G. "Ortliche Nachstromregelung", 1920

From Werft und Reederei, number 24. Also includes the English translation "Local control of wake."

Box 6 Folder 5
Baker, G.S. "Ship wake and the frictional belt", 1929

Advance paper. Also, Discussion. 30 pages.

Box 6 Folder 5
Dahlmann, W., et al. "Messung der Wassergeschwindigkeiten neben der Schiffswand", 1926 September 7

From Werft*Reederei*Hafen, number 17.

Box 6 Folder 5
Kempf, G. and W. Sottorf. "Messung der Wassergeschindigkeiten neben der Schiffswand", 1925 November 22

From Werft*Reederei*Hafen, number 22.

Box 6 Folder 5
Lerbs, H. "Die Verteilung der Verdrangungsstromung neber der Schiffswand", 1928

From Werft*Reederei*Hafen, number 13.

Box 6 Folder 5
Kempf, G. and W. Sottorf. "the measurement of velocity distribution in the region of a vessel's side", 1926 August 26

From Shipbuilding and Shipping Record.

Box 6 Folder 5
Baker, G.S. "After end wake in way of screws", 1935 March 28

From Shipbuilding and Shipping Record.

Box 6 Folder 5
Abell, T.B. "A contribution to the photographic study of the mechanism of a ship's wake", 1933

From Transactions of the Institute of Naval Architects, volume 75.

Box 6 Folder 5
Telfer, E.V. "The wake and thrust deduction of single screw ships", 1936

Advance paper, 14 pages.

Box 6 Folder 5
"Methods of determining the thrust deduction of inboard propellers and outboard propellers separately for Twin Skeg, Four Screw Battleship, Model No. 3441", 1936 December

Report No. 428, U.S. Experimental Model Basin, Navy Yard, Washington, DC.

Box 6 Folder 5
Notes and drawings, 1929-1938

38 pages.

JJ - Materials - General Data, 1937-1940, undated

Box 6 Folder 6
Notebook: "Properties of materials curves", undated
Box 6 Folder 6
Ffield, Paul. "Alloys in shipbuilding", 1937

From Transactions of the Society of Naval Architects and Marine Engineers, volume 45.

Box 6 Folder 6
Begeman, M.L. "Hard-surfacing processes and materials", 1938 December

From Mechanical Engineering.

Box 6 Folder 6
Notes, 1940

4 pages.

Propulsion - General, 1927-1940

Box 7 Folder 1
"Pump propelled lifeboat", 1940 January

From Mechanical Engineering. 2 pages.

Box 7 Folder 1
Hughes, G. "Model experiments on twin-screw propulsion", 1936

From Transactions of the Institute of Naval Architects, volume 78, 8 pages.

Box 7 Folder 1
Kempf, G. "Economic propulsion of ships", 1927 July 23

Translation from Zeitschrift des vereines deutscher Ingenieure, number 30.

Box 7 Folder 1
Yamagata, M. "Model experiments of the combined effect of aft-body forms and propeller revolutions upon the propulsive economy of single-screw ships", 1934

From Transactions of the Institute of Naval Architects, volume 76.

Box 7 Folder 1
Van Lammeren, W.P.A. "Analyse der Voortsuwingscomponenten in Verband met het Schaaleffect bij Scheepsmodelproeven", 1938

Dutch Tank Publication #32.

Box 7 Folder 1
Mitchell, E.H. "The design and propulsion of fast double-ended screw vessels", 1928

From Transactions of the Institute of Naval Architects, volume 70, 7 pages.

Box 7 Folder 1
Notes on "Three-screw propulsion", 1930

5 pages.

Effective Width-Box Girders, 1938

Box 7 Folder 2
Reissner, Eric. "On the problem of stress distribution in wide-flanged box-beams", 1938 June

From Journal of the Aeronautical Sciences, volume 5.

Box 7 Folder 2
Notes and correspondence, 1938

9 pages.

General Mathematics, 1938-1940, undated

Box 7 Folder 3
Karmen, Th. von. "Some remarks on mathematics from the engineer's viewpoint", 1940 April

Copy from Mechanical Engineering, 7 pages.

Box 7 Folder 3
Skilling, H.H. "Tensors - in 'words of one syllable'", 1938 September

From Electrical Engineering.

Box 7 Folder 3
Hoffmann, Banesh. "What is tensor analysis?", 1938 January-March

From Electrical Engineering.

Box 7 Folder 3
Notes, undated

2 pages.

Box 7 Folder 4

Armor - Studies of Effect of Sloping, 1935-1937

7 pages of notes, 3 sheets of drawings/curves, 4 memoranda.

Box 7 Folder 5

Propeller Drawings, 1929-1932

86 sheets of drawings.

Box 7 Folder 6

Society of Naval Architects & Marine Engineers Bulletin, 1932 December-1945 March

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Series 2: Notebooks, 1909-1954 Boxes 7-11

Series Description

Three-ring notebooks of notes, drawings, article reprints, tabular data, and curve diagrams. The materials pertain to ship hull forms, horsepower propeller design, and rudder design.

Series Arrangement

Arranged by volume number.

Box 7 Folder 7

Notebook 1: Form and E.H.P. (Standardized), 1929-1935

106 sheets of curves. Covers merchant ships, battleships, aircraft carriers, cruisers, destroyers, and submarines. Also includes section area and W.L. curves.

Box 8 Folder 1

Notebook 2: BB Hull Form - Vol. I, 1936-1937

73 sheets of curves and drawings, 64 pages of miscellaneous notes, 13 letters/memoranda, and 3 photographs.

Box 8 Folder 2

Notebook 3: BB Hull Form - Vol. II, 1934-1936

34 sheets of curves and drawings, 47 pages of miscellaneous notes, 4 memoranda, and 4 photographs.

Box 8 Folder 3

Notebook 4: Hull form and Propulsion of Destroyers, 1937 June

Text, plates, and notes on material to be added to volume.

Box 9 Folder 1

Notebook 5: Papers & Notes on Joints and Connections, 1935-1937

71 sheets of curves, drawings, and tables, 59 pages of notes, 10 memoranda, and 2 photographs.

Box 9 Folder 2

Notebook 6: Typical Ships - E.H.P. S.H.P. Lines Analysis, 1927-1937

5 sheets of curves and tables, 2 pages of notes.

Box 9 Folder 3

Notebook 7: Notes on Rudders & Steering, Notebook No. 1, 1917-1938

17 sheets of drawings, curves, and tables, 45 pages of notes, 19 reprints, papers, and memoranda.

Box 10 Folder 1

Notebook 8: Notes on Rudders & Steering, Notebook No. 2, 1954

1 sheet of curves, 74 pages of notes. Many blank pages interleaved with notes. Does not appear to be in Conrad's handwriting.

Box 10 Folder 2

Notebook 9: Papers on Propellers, 1927-1938

2 sheets of curves, 2 pages of notes, 19 reprints of articles, and 4 photographs.

Box 10 Folder 3

Notebook 10: General Notes - Form - Propulsion - Design Histories - Bossings Versus Struts, 1909-1937

6 sheets of curves and drawings, 65 pages of notes, 10 reprints of articles, and 3 memoranda.

Box 11 Folder 1

Notebook 11: Propeller Design - Charts and Forms, 1921-1940

16 sheets of tables, 22 sheets of curves, and 1 reprint of an article.

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Series 3: Supplementary Papers, 1930-1961 Boxes 11-12

Series Description

Documentation pertaining to the Society of Naval Architects and Marine Engineers' Hydrodynamics Committee, the American Towing Tank Conference, the International Towing Tank Conference, the David W. Taylor Model Basin, and the U.S. Navy Bureau of Ships. The materials in this series, many of which were produced in the decade after Conrad's death, were compiled by Harold E. Saunders.

Series Arrangement

Arranged by topic and corporate body.

Box 11 Folder 2-5

Society of Naval Architects and Marine Engineers - Hydrodynamics Committee, 1947-1961

Correspondence, reports, and meeting minutes relative to Conrad's work with the Hydrodynamics Committee.

Box 12 Folder 1-2

American Towing Tank Conference, 1938-1961

Correspondence, clippings and meeting minutes relative to the American Towing Tank Conference and its committees.

Box 12 Folder 3-4

International Towing Tank Conference, 1933-1961

Correspondence, reports, and meeting minutes relative to the International Towing Tank Conference and its committees.

Box 12 Folder 5

Navy - General, 1930-1961

Includes materials on the Bureau of Ships and Bureau of Naval Personnel, submissions for the Dictionary of American Naval Fighting Ships, and plans for a fire effect computer.

Box 12 Folder 6

Navy - Model Basin, 1930-1961

Materials pertaining to the David W. Taylor Model Basin.

Box 12 Folder 7

Navy - Outline of Scientific and Engineering Knowledge, 1930-1961

Proposed outline of scientific and engineering knowledge compiled for use at the Bureau of Ships.

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