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2. List of vacuum cleaners - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_cleaners

   Vax Mach Air; Vax Airlift; Shark Rotator Series (NV3xx, NV4xx, NV5xx, NV6xx, NV7xx) Shark Apex Series (AZ1xxx) Shark Vertex Series (AZ2xxx) Vax Air Stretch; Vax Air Reach, Pet, Pets and Family, total home; Hoover Windtunnel Bagless

3. List of wind tunnels - Wikipedia

   en.wikipedia.org/wiki/List_of_wind_tunnels

   Located at Arnold Air Force Base and operated by the United States Air Force: Aircraft Research Association [6] Operational 2.74 m × 2.44 m × 3.66 m (9 ft 0 in × 8 ft 0 in × 12 ft 0 in) Transonic United Kingdom Transonic closed circuit, continuous flow wind tunnel. Mach number 0 - 1.4. Reynolds Number 3.5 to 16.7 million/m [7]

4. Vacuum cleaner - Wikipedia

   en.wikipedia.org/wiki/Vacuum_cleaner

   Patent model of Daniel Hess's carpet sweeper. In 1860 a manual vacuum cleaner was invented by Daniel Hess of West Union, Iowa. Called a "carpet sweeper", it gathered dust with a rotating brush and had a bellows for generating suction. [4] [5] Another early model (1869) was the "Whirlwind", invented in Chicago in 1868 by Ives W. McGaffey. The ...

5. Wind tunnel - Wikipedia

   en.wikipedia.org/wiki/Wind_tunnel

   A scale model light aircraft showing helium-filled bubbles which follow pathlines of the wingtip vortices. Smoke; Carbon dioxide injection; Tufts, mini-tufts, or flow cones can be applied to a model and remain attached during testing. Tufts can be used to gauge air flow patterns and flow separation.

6. Supersonic wind tunnel - Wikipedia

   en.wikipedia.org/wiki/Supersonic_wind_tunnel

   Engineers check an aircraft model before a test run in the Supersonic Wind Tunnel at Lewis Flight Propulsion Laboratory. Schlieren photography is often used to capture images of gas flow and shock waves in supersonic wind tunnels. Here, Mach 4 flow over a pitot probe is observed by schlieren optics in the Penn State Supersonic Wind Tunnel. The ...

7. Hypervelocity Wind Tunnel 9 - Wikipedia

   en.wikipedia.org/wiki/Hypervelocity_Wind_Tunnel_9

   AEDC Hypervelocity Wind Tunnel 9 is a hypersonic wind tunnel owned by the United States Air Force and operated by National Aerospace Solutions The facility can generate high Mach numbers and high Reynolds for hypersonic ground testing and the validation of computational simulations for the Air Force and Department of Defense.