This collection consists of the materials relating to Bruce Del Mar's airplane cabin pressurization and air quality engineering work, including: 82 3.25 by 4 inch glass lantern slides featuring images, graphs and charts of Del Mar's cabin pressurization work including work on the Douglas DC-4E (possibly for a lecture); reports; drawings; correspondence; and issues of Douglas' internal management newsletter. There are also several reports on air transportation of large cargo, including vehicular trailers.
Biographical / Historical:
Bruce Del Mar (b. 1913) graduated from the University of California, Berkeley, in 1937 with a Bachelor of Science in Mechanical Engineering. During his college summer breaks, Del Mar had worked at Douglas Aircraft Company, and after his graduation he returned to to Douglas full-time. At Douglas he worked with other scientists on airplane cabin pressurization, which would allow passengers to comfortably fly above 10,000 feet without oxygen masks. Del Mar, along with Douglas engineer Wolfgang Klemperer, held the patent for the first pressurization system of a commercial aircraft. In 1952, Del Mar used the money he received from royalties on his patents and inventions to found Del Mar Engineering Laboratories in Santa Monica, California. His company, later renamed Del Mar Avionics, built targeting systems for military aircraft. During later years, the company produced HydraSet, a hydraulic lifting device used to hoist space shuttles onto 747s for transport to Cape Kennedy and to move fuel rods in nuclear power plants. Besides his work in the aviation field, Del Mar also had great success in the medical field and in 1963 he was the first to patent and produce the Holter monitor, an electrocardiogram system that allowed physicians to track their patients' hearts continuously.
Provenance:
Bruce E. Del Mar, Gift, 2012
Restrictions:
No restrictions on access.
Rights:
Material is subject to Smithsonian Terms of Use. Should you wish to use NASM material in any medium, please submit an Application for Permission to Reproduce NASM Material, available at Permissions Requests
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
Douglas DC-4 (N88935 Registration History) [Documents]
Collection Creator:
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
Douglas DC-4 (N88935 Registration History) [Photos]
Collection Creator:
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
Douglas DC-4 (N88935 Registration History) [Negatives]
Collection Creator:
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
Douglas DC-4, Sabena Swing-Tail Cargo Modification [**No File**]
Collection Creator:
National Air and Space Museum. Archives Division. Search this
Type:
Archival materials
Collection Restrictions:
The majority of the Archives Department's public reference requests can be answered using material in these files, which may be accessed through the Reading Room at the Steven F. Udvar-Hazy Center in Chantilly, Virginia. More specific information can be requested by contacting the Archives Research Request.
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"[Photo] Prototype Douglas DC-4 which was sold to Japan and subsequently crashed. (Only one built.) The succeeding DC-4 (had single fin and rudder) became the C-54. ( See "Janes" 1942)." Source:
Collection Creator:
Wright-Patterson Air Force Base (Ohio) Search this
Container:
Box D608, Folder D52.1 Douglas / 1424
Type:
Archival materials
Date:
[1942]
Scope and Contents:
Douglas DC-4
Collection Restrictions:
No restrictions on access
Collection Rights:
Material is subject to Smithsonian Terms of Use. Should you wish to use NASM material in any medium, please submit an Application for Permission to Reproduce NASM Material, available at Permissions Requests
""Flying Hotel Surpasses all Test Promises". Story on test flight of the Douglas DC-4 airplane." Source: Newspaper clipping,
Collection Creator:
Wright-Patterson Air Force Base (Ohio) Search this
Container:
Box D609, Folder D52.1 Douglas / 1665
Type:
Archival materials
Date:
Oct. 7, 1938.
Scope and Contents:
Airplanes - Douglas - DC-4
Collection Restrictions:
No restrictions on access
Collection Rights:
Material is subject to Smithsonian Terms of Use. Should you wish to use NASM material in any medium, please submit an Application for Permission to Reproduce NASM Material, available at Permissions Requests
![view Airplane Cabin Pressurization Collection [Del Mar] digital asset: Finding aid](https://ids.si.edu/ids/deliveryService?max=170&id=https://sirismm.si.edu/siris/findingaid.gif "Finding aid")
