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Supercritical airfoils feature four main benefits: they have a higher drag-divergence Mach number, [21] they develop shock waves farther aft than traditional airfoils, [22] they greatly reduce shock-induced boundary layer separation, and their geometry allows more efficient wing design (e.g., a thicker wing and/or reduced wing sweep, each of which may allow a lighter wing).
Food safety agencies, such as the United States' Food Safety and Inspection Service (FSIS), define the danger zone as roughly 40 to 140 °F (4 to 60 °C). [1] [2] [3] The FSIS stipulates that potentially hazardous food should not be stored at temperatures in this range in order to prevent foodborne illness [a] and that food that remains in this ...
After World War II, NACA research began to focus on near-sonic and low-supersonic airflow.After considering the sudden drag increase which a wing-fuselage combination experiences at somewhere around 500 mph (800 km/h), Whitcomb concluded that "the disturbances and shock waves are simply a function of the longitudinal variation of the cross-sectional area" – that is, the effect of the wings ...
The Food Safety and Inspection Service (FSIS), an agency of the United States Department of Agriculture (USDA), is the public health regulatory agency responsible for ensuring that United States' commercial supply of meat, poultry, and egg products is safe, wholesome, and correctly labeled and packaged.
The Center for Food Safety and Applied Nutrition (CFSAN (/ ˈ s ɪ f ˌ s æ n / SIF-san)) is the branch of the United States Food and Drug Administration (FDA) that regulates food, dietary supplements, and cosmetics, as opposed to drugs, biologics, medical devices, and radiological products, which also fall under the purview of the FDA.
Dr. Jose Emilio Esteban is the 6th and current Undersecretary of Food Safety. He was sworn in on January 4, 2023. [6]Previous Under Secretaries include Dr. Mindy Brashears (March 2020–January 2021), Dr. Elisabeth Hagen (August 2010–December 2013), Richard Allen Raymond (July 2005–January 2009), Elsa A. Murano (October 2001–December 2004) and Catherine Woteki (July 1997–January 2001).
Supercritical fluids have found application in a variety of fields, ranging from the extraction of floral fragrance from flowers to applications in food science such as creating decaffeinated coffee, functional food ingredients, pharmaceuticals, cosmetics, polymers, powders, bio- and functional materials, nano-systems, natural products ...
Designers at Armstrong-Whitworth took the sonic area rule a step further in their proposed M-Wing, in which the wing was first swept forward and then to the rear. This allowed the fuselage to be narrowed in front of the root as well as behind it, leading to a smoother fuselage that remained wider on average than one using a classic swept wing.