Photron Downloads

  1. Factors To Consider When Purchasing A High-Speed Video Camera

    There are many factors that are important to consider when you purchase a high-speed camera. Photron USA, Inc. discusses the important factors involved in selecting the appropriate high-speed video camera for your specific information.

  2. Understanding The Dynamics Of Droplets And Turbulence

    Turbulent flows laced with particles can be found everywhere, and include fuel droplets in combustion engines, airborne pollen, and water droplets in clouds. Even though they have been studied often, questions still remain that have to do with the particles’ inertia prohibiting them from following turbulence flow, making the Navier-Stokes equations insufficient for solving their equations. This white paper presents a project studying the dynamics of inertial droplets in a turbulent flow in a well-controlled environment. Measurements of droplet size distribution and turbulent dispersion rate in this study are done with interferometric particle imaging (IPI) and phosphorescent tagging techniques.

  3. Precision Of FLEET Velocimetry Using High-Speed CMOS Camera Systems

    Femtosecond laser electronic excitation tagging (FLEET) is an optical measurement technique that permits quantitative velocimetry of unseeded air or nitrogen using a single laser and a single camera. This paper seeks to determine the fundamental precision of the FLEET technique using high-speed complementary metal-oxide semiconductor (CMOS) cameras. 

  4. Development Of Background-Oriented Schlieren For NASA Langley Research Center Ground Test Facilities

    This paper provides an overview of recent wind tunnel tests performed at the NASA Langley Research Center where the Background-Oriented Schlieren (BOS) technique was used to provide information pertaining to flow-field density disturbances. The facilities where the BOS technique was applied included the National Transonic Facility (NTF), Transonic Dynamics Tunnel (TDT), 31-Inch Mach 10 Air Tunnel, 15-Inch Mach 6 High-Temperature Air Tunnel, Rotor Test Cell at the 14×22 Subsonic Tunnel, and a 13-Inch Low-Speed Tunnel.

  5. Laser Illumination For High-Speed Imaging

    An incorrect or poorly lit subject affects the image, regardless of camera system quality. Therefore, the illumination source is just as important as the camera's resolution and sensitivity. See how a laser can be used for illumination in these four high-speed imaging application examples.

  6. Using A Photron FASTCAM Camera For Particle Imaging Velocimetry (PIV)

    Particle imaging velocimetry (PIV) can be extremely useful for the analysis of turbulent flow, transient flow, micro flow, and 3D volumetric flow studies within automotive, aerospace, bio-tech/medical, marine propulsion, electronics, and scientific research industries. 

  7. Shadowgraphy Imaging Technique

    Using the backlight/shadowgraphy imaging technique can provide high-contrast object images for a better understanding of an object's shape or size. This application note looks further into this imaging method and walks through its optical setup and its application uses.

  8. Propulsion And Energy Research Laboratory Uses High-Speed Digital Cameras In Turbulent Combustion Studies

    This case study discusses the use of the FASTCAM SA-Z to effectively slow down the turbulent flow of motion through the acquisition of a large number of images played back at various slow speeds for frame by frame data analysis.

  9. Material Deformation Kinematics Captured By High-Speed Digital Cameras at 10,000 Frames Per Second

    This case study describes a study on material deformation using the high-speed camera FASTCAM SA4.

  10. High-Speed Imaging For Military Applications

    Studies involving ballistics, survivability, weapon launches, and small and large caliber arms have unique imaging requirements. Download the article to understand what those requirements are, and the high-imaging solutions that Photron has developed to meet them.