Manuscripts
Liquid splash formation, U.S. Army Ballistic Research Laboratory
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Supersonic wind tunnel and equipment at the U.S. Army Ballistic Laboratory
Manuscripts
Four unidentified men working with the supersonic wind tunnel, Ballistics Research Laboratory. Note in the hand of Grace (Burke) Hubble: "EPH Supersonic Wind Tunnel, Huntington Library Collection."
mssHUB 1044 (1)

Resistance testing of a missile, U.S. Army Ballistic Laboratory
Manuscripts
Resistance testing of a missile, U.S. Army Ballistic Laboratory. Note in the hand of Grace Burke Hubble: "EPH, Huntington Library Collection."
mssHUB 1044 (6)

Measuring instruments at the U.S. Ballistic Laboratory, Aberdeen Proving Ground
Manuscripts
Machinery, Ballistics Research Laboratory. Photographer: Photographic Measurements Section, U.S. Army Ballistic Laboratory. Note in the hand of Grace (Burke) Hubble: "EPH, Huntington Library Collection." Possible measuring instruments, in three compartments, labeled Pitch, Lift, Drag.
mssHUB 1044 (9)

Diagram of the Flexible nozzle supersonic wind tunnel for the U.S. Army Ballistic Research Laboratory
Manuscripts
Diagram of proposed flexible nozzle supersonic wind tunnel for the U.S. Army Ballistic Research Laboratory, Aberdeen, Md. Note in the hand of Grace Burke Hubble: "EPH Huntington Library Collection". The image's label reads: "Flexible nozzle supersonic wind tunnel, Ballistics Research Laboratory, Aberdeen Proving Ground, MD." In the lower left-hand corner is a label that reads: "Prepared by Pictorial Branch, The Ordnance School, A.P.G., MD." Below this label is written "A28464".
mssHUB 1044 (17)

Equipment and machinery at the U.S. Army Ballistic Laboratory
Manuscripts
Equipment and machinery in the U.S. Ballistic Laboratory. Photographer: Photographic Measurements Section, Ballistic Research Laboratory Note in the hand of Grace (Burke) Hubble: "EPH, Huntington Library Collection."
mssHUB 1044 (5)

Eight-inch blassistic shell 150 feet beyond muzzle, U.S. Army Ballistic Laboratory
Manuscripts
Eight inch shell about 150 feet beyond muzzle, just after being fired, Ballistics Research Laboratory. Note in the hand of Edwin Powell Hubble: "8-inch shell about 150 ft beyond muzzle, velocity about 2300 ft/sec. Microflash exp. @ 1/1,000,000 second." Note in the hand of Grace (Burke) Hubble: "EPH Huntington Library"
mssHUB 1044 (18)