Descriptive Finding Guide for the Wilhelm F. Schult Personal Papers
San Diego Air and Space Museum Library and Archives
2001 Pan American Plaza, Balboa Park
San Diego 92101
Language of Material:
San Diego Air and Space Museum Library and Archives
Title: Wilhelm F. Schult Personal Papers
Identifier/Call Number: SDASM.SC.10126
1.25 Cubic Feet
2 boxes 6” X 18” X 10”
Date (inclusive): 1895-1979
Abstract: Wilhelm Schult was a designer and researcher at Ryan Aeronautical who, in the 1930s, began his own independent research into
the flying wing aircraft design.
Conditions Governing Access
The collection is open to researchers by appointment.
Conditions Governing Use
Some copyright may be reserved. Consult with the library director for more information.
Immediate Source of Acquisition
The materials in this Collection were donated to the San Diego Air and Space Museum.
[Item], [Filing Unit], [Series Title], [Subgroups], [Record Group Title and Number], [Repository “San Diego Air & Space Museum
Library & Archives”]
Scope and Contents
This collection consists of 2 boxes 6” X 18” X 10” containing drawings, calculations, photographs, and negatives. One folder
in the collection is restricted for conservation reasons.
Northrop Grumman Subject Files
Horton Subject Files
Biographical / Historical
Wilhelm F. Schult was born in Winthrop, Massachusetts in 1895. He studied mathematics and engineering at Massachusetts Institute
of Technology. In 1927, he moved to San Diego and began work for Ryan Aeronautical Company and other companies. In the 1930s,
he began to do independent research in the design of flying wing aircraft. He built scale models and tested them in flight
and in wind tunnels. This collection contains his research. He passed away in 1979 and was buried in Massachusetts.
Subjects and Indexing Terms
McDonnell Douglas aircraft
Flying Wing Airplanes
Northrop Grumman Corporation
Boeing Airplane Company
Wright Aeronautical Corporation
Schult, Wilhelm F.
Ryan Aeronautical Company
Folder 01 – Plans and Drawings
Physical Description: 1. Booklet, Hartshorn Tie rods and Fittings (2 copies).
2. Pencil sketches, pursuit model.
3. Material list, model W800 parts.
4. Material list, all parts.
5. Drawings, sail plane, model S-1,Feb. 17, 1968.
6. Drawings, sail plane, model S-35.
7. Second copy, S-35.
8. American Standard nuts and bolts chart.
9. Fastener Diagrams.
10. Wing diagram, 132” chord.
11. Comparison Chart, ship vs. plane.
12. Magazine photo of “mystery,” racer.
13. Development problems and trends bibliography.
14. Magazine photograph, Curtiss all metal pursuit plane.
15. Table of blade angles.
16. Biography, Wilhelm F. Shult. (2 copies)
17. Analysis of fuselage loading conditions.
18. Installation diagram, Curtiss Jupiter engine
19. Installation diagram, cowling Jupiter engine.
20. Valve timing diagram Jupiter engine.
21. Exhaust manifold, Jupiter engine.
22. Drawing model 28 six passenger transport Nov. 4, 1955.
23. Single place sail plane model S-34 Feb. 17, 1968 (2 copies).
24. Single place sail plane model S-34 Feb. 17, 1968 with pilot (2 copies)
25. Ryan flying boat.
26. Installation drawing, Wright R975 engine.
27. Bending diagram.
Folder 02 – Photographs
Physical Description: 1. 72 Photographs depicting flying wing models and other items.
Folder 03 – Miscellaneous specifications and drawings
Physical Description: 1. Boeing 707 specifications
2. Boeing 747specifications.
3. Diagram, unidentified aircraft.
4. Articles, Aviation magazine, 1935- 1939.
5. Diagram target flying wing model S-30.
6. Diagram target flying wing model S-30 performance at various altitudes.
7. Diagram VSTOL flying wing tilt-wing type model S-32.
8. Performance diagram VSTOL flying wing S-32.
9. Diagram flying wing racer.
10. Wind tunnel test results.
11. Cards with mathematical equations.
12. Wind tunnel test results model S-26.
13. Midget recon wind tunnel test data.
14. 24 passenger flying wing Jan. 31, 1939.
15. Unknown drawing and performance statistics.
16. Drawings, flying wing interceptor Dec. 7. 1946.
17. Wind Tunnel results model S-25 Oct. 1, 1945.
18. Chord diagram, unknown aircraft.
19. Concept drawing, flying wing bomber.
20. Flying wing bomber, performance statistics.
21. Model XB368 performance specs and bomb layout.
22. Mean line calculations, 9 pages.
23. Chart of national logarithms.
24. Mean line diagram
25. Wing section, three views.
Folder 04 – Single person sailplane drawing
Physical Description: One (1) item. Restricted for conservation reasons.
Folder 05 – Design and Stress Analysis of Model S-2
Physical Description: One (1) book, Design and Stress Analysis of High Speed Low Wing Monoplane model S-2, by Wilhelm F. Schult, engineer, general
specifications, performance and loading data, 82 pages.
Folder 06 – Design and Stress Analysis of Model S-1
Physical Description: One (1) book, Design and Stress Analysis of 5 Place High Wing Monoplane, model S-1, by Wilhelm F. Schult, engineer, loading
weight and balance calculations, 73 pages.
Folder 07 – Preliminary design of Flying Wing Pursuit
Physical Description: One (1) book, Preliminary Design of Flying Wing Pursuit with Allison 1000 to 1600 H.P. model S-6, by Wilhelm F. Schult, engineer,
descriptions and performance calculations, 19 pages
Folder 08 – Photographic negatives of pursuit and other models
Folder 09 – Books and Magazine Articles
Physical Description: 1. Concise Calculation Procedure for the Aeroelastic Problem. 8 pages.
2. By W. J. Gaugh and J. K. Slap.
3. Presentation, The Metalclad Airship by W. Fritsche , typed presentation, 34 pages.
4. Hand book of instructions for airplane designers, 25 pages.
5. Articles from Aviation Magazine from 1935 to 1939 in chronological order,
“Engine Power Factor”, editorials, article, “What Plane Shall we Take?”
6. Manual, M- 43.1, by Wilhelm Schult, aerodynamic calculations, 7 pages.
Folder 10 – Miscellaneous Calculations and drawings
Physical Description: 1. Article, “closure” 1 page.
2. Chassis details for Fokker D VIII, 1 page.
3. Development trends in rockets, 1 page.
4. Design drawings and calculations 5 pages.
5. Wing stress, 2 pages.
6. Pencil calculations, no aircraft identification.
7. Propeller calculations, 8 pages.
8. Air mail plane calculations, 1 page.
Folder 11 – Additional blueprints and drawings
Physical Description: 1. Airplane performance and design chart.
2. Installation diagram, Fowler flap wing.
3. Performance estimate for model S-12.
4. Schult XP 800 three view drawing S-5 April 1945.
5. Design drawing for pursuit or convoy escort, Feb. 6, 1935.
6. Propeller cross section for liberty engine.
7. Installation diagram, Curtiss OX 5 engine.
Folder 12 – Design Schult XP800
Physical Description: One (1) book, Preliminary Design and Stress Analysis of Schult XP 800 model S-5, by Wilhelm F. Schult, engineer, containing
drawings and calculations, 24 pages.
Folder 13 – Applied Transonic Aerodynamics
Physical Description: 1. One (1) book, Applied Transonic Aerodynamics, by W.L. Koch, engineer, North American Aviation, outline of problems
encountered in high speed flight, 73 pages.
2. One (1) book, Applied Transonic Aerodynamics, Wilhelm F. Schult, engineer, outline of problems encountered in high speed
flight, 24 pages.
Folder 14 – Principles of High Speed Flight
Physical Description: One (1) book Principles of High Speed Flight, by H.M. Conway, Jr. Southeastern Research Institute, Atlanta, Georgia, aerodynamic
studies and calculations, 48 pages.
Folder 15 – Preliminary Design Pursuit
Physical Description: One (1) book, Preliminary Design of Flying Wing Pursuit with Allison 2400 H.P. motor model S-11, By Wilhelm F. Schult, engineer,
containing performance and general specifications, 34 pages.
Folder 16 – Preliminary Design Heavy Bomber
Physical Description: One (1) book, Preliminary Design of Heavy Bomber with 4 P & W Twin Wasp motors, 4000 H.P. model S-12, by Wilhelm F. Schult,
engineer, performance and stability calculations, 42 pages.
Folder 17 – Photograph of Wilhelm Schult flying wing models in display case