Cardi B: Tiny Desk Concert
In leather pants and a power blazer, Cardi B brings a humble and humorous spirit to the Desk as she runs through a set packed with hits.
Riots send shockwaves through French election
Presented by European Commission’s Directorate-General for Education, Youth, Sport and Culture By CLEA CAULCUTT with MAX GRIERA PRESENTED BY Send tips here | Listen to Playbook and view in your bro…
Instrumentation
3 min read Preparations for Next Moonwalk Simulations Underway (and Underwater) To measure airflow and sound, research teams at the NASA Glenn Research Center use special instrumentation like particle image velocimetry, hot wire anemometry, Raman spectroscopy, microphones in phased arrays or continuously rotating rakes. The global aviation noise reduction community relies on data from NASA GRC experiments to validate theory and noise prediction software. Rotating Rake Mode Measurement System (RRMS) Hear an annoying tone from your turbofan engine? Engineers might prescribe an advanced liner or specially tuned active noise control system to quiet it down. To get it right, though, more information about the modal content of the tone is needed. This kind of data can’t be measured with a stationary microphone, which is why NASA Glenn engineers pioneered procedures using rotating microphones in the 1990s. Rotating Microphone Rakes have been used by NASA Glenn researchers in a wide variety of tests ranging from low-speed proof of concept tests in the Advanced Noise Control Fan Rig and 9- by 15-Foot Low Noise Wind Tunnel to full-scale turbofan engine ground tests. Rotating Rake Mode Measur
Ukrainians and Sudanese with temporary legal status will keep protections for now
WASHINGTON — Immigrants living in the United States with humanitarian status from Ukraine and Sudan will retain their deportation protections and work authorizations for now, the Department of Homeland Security said over the weekend. More than 100,000 Ukrainians and roughly 2,000 Sudanese with Temporary Protected Status will keep their protections until “such an announcement is made,” the agency said.
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