Wind tunnel vacuum: Hoover® Windtunnel Rewind Pro Vacuum Cleaner

Hoover WindTunnel 2 High Capacity Bagless Upright Vacuum

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Clean your home in high performance mode with this powerful upright vacuum from Hoover. Designed with exclusive WindTunnel2 technology that lifts and removes dirt embedded in your carpets and floors through two channels of suction. Features a reusable, easy-rinse filter and includes an accessory pack to help tackle stairs, furniture and upholstery.

Product Details

Model Number: UH70805

SKU(s): 810325334


  • Model number: UH70805
  • 13″L x 14″W x 44″H
  • Material: Plastic
  • Wattage: 1440
  • Cord length: 25′
  • Hose length: 8′
  • UL® listed

California Customer WARNING: Cancer and Reproductive Harm. For more information go to :


  • Includes vacuum, extension wand, crevice tool, turbo tool and dusting brush
  • Exclusive WindTunnel 2 Technology creates 2 – channels of suction to lift and remove embedded dirt
  • High capacity dirt cup holds more dirt, dust and debris
  • Convenient bottom-release cup
  • Reusable easy rinse filter for long-lasting use
  • Dual-cyclonic air passes through 2 – cyclonic stages to filter dirt and debris from the air path
  • High efficiency particulate air filter traps 99.7% of dirt, dust and pollens
  • Features above floor cleaning reach up to 10′
  • 5 – Position height adjustments
  • 13.5′ Cleaning path


  • Assembly required: Yes

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Standard Delivery

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HOOVER UH71300 Upright Vacuum Wind Tunnel Cord Rewind Bagless Corded Standard Filter Multicolored

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Collection Type



10 lb




Extension Wand, Rubber Bumper

Defective Code




WiFi Connected


Run Time

24 hr

Corded or Cordless



11. 9″

Sub Brand

Wind Tunnel Cord Rewind

Cord Length

25 ft.



Cleaning Path Width


Product Type

Upright Vacuum

Filtration Type

Standard Filter


12 Amps

Each Weight

19.900 LB

Hazardous Material


Alternative UPC


Hoover Wind Tunnel Cord Rewind Pro Upright Vacuum is perfect for whole home cleaning from floor to ceiling. The hassle-free 25 ft. power cord automatically retracts in seconds, so you never have to wrap a cord again. The multi-floor brush roll, paired with a 5-level height adjustment, provides an optimal clean on any surface. The multi-purpose tools efficiently clean corners, crevices, stairs, furniture and more.

Wind tunnel in Moscow – fly in the attraction of Sokolniki Park, the large wind tunnel Vacuum

Wind tunnel in Moscow – fly in the attraction of Sokolniki Park, the large wind tunnel Vacuum

Moscow, Bogorodskoe highway, 18s9

from 10:00 to 23:00, seven days a week



Book a flight


Moscow, Bogorodskoe highway, 18s9

from 10:00 to 23:00, seven days a week

in Sokolniki

Specialized complex for flights, recreation, entertainment and professional training of skydivers.

This is a place that inspires, because here you can do everything: get off the ground and take off, have fun and just have a good time! We create an atmosphere of friendly warmth, safety and drive, in which dreams come true, boundaries are erased and new opportunities open up.

Welcome to the world of flying!

Flight stages

  • Recording

    Book a convenient time through the website, social networks or by phone:
    +7 (499) 444-14-81

  • Arrival

    Arrive at the complex 40 minutes before the flight to fill out the questionnaire

  • Equipment

    Get stylish, comfortable equipment (overalls, helmet, shoes, disposable caps)

  • briefing

    Take a pre-flight briefing with an instructor

  • Flight

    Enjoy flying with the support of an instructor


For children

Show all

Fly 2 minutes

1 person

2 min

1 600


90 002 Fly 4 minutes

2 people

4 minutes



Fly 6 minutes

3 pax

6 min



Fly 8 minutes

4 pax

8 minutes



Fly 2 minutes

1 person

2 minutes



Fly 4 minutes

9 0002 2 pers

4 min



Fly 6 minutes

3 pax

6 min



Fly 8 minutes

4 pax

8 minutes



Calculate your flight

And here we took care of you, so we offer
choose an individual convenient fare

Book a flight

Our administrator will contact you to confirm your booking

By clicking on the “Submit request” button, I accept the processing of personal data

Discover new facets of freedom with a flight certificate

Giving a gift certificate for a flight
in the wind tunnel, you can feel like a magician who gives wings behind your back

Order a certificate

We organize holidays that adults and children like

At your personal disposal there will be a playground of 500 sq. m., where everything is provided for fun and a real breakaway

Order a holiday

We organize sports training

We help athletes master the elements of any complexity in all wind tunnel disciplines of parachuting





A year ago I was shooting others in such a tube, it was so cool and then I had a desire to fly. Yesterday it turned out to fulfill the desire of both my own and my children) The birthday of adult children is really a problem, they all saw, were everywhere and grew out of animation. Our life consists of emotions, give them to yourself)
@vacuumfly thanks, you are cool!


First of all, flying is cool. Secondly, after a certain flight time, the body gets used to it and relaxes (this is infa for those who have terribly sore muscles). Thirdly, after the air turbine, you can understand whether you will skydive or not. I’ve made a decision – definitely not – I’m quite satisfied with a couple of meters. Fourthly, – the guys from @vacuumfly are great – a modern pipe, in the city, with a delicious cafe, a building in the park, their own photo / video support, panoramic windows. The trainers are amazing! I recommend! I will celebrate my next birthday with you @vacuumfly


Attractions from @bundeet in the wind tunnel – fire!

Leave your review

Bright moments of flight in a wind tunnel



What is the VACUUM Aerocomplex?

The VACUUM aerodynamic complex is a modern two-storey building with a stylish and dynamic design. On an area of ​​500 sq.m. all the necessary infrastructure is located. Flights are carried out in an armored glass tube. The height of the pipe is 11 m, and the diameter is 3 m.

Athletes choose VACUUM for their training because it maximally meets the requirements for training objects of a similar type. The secret is quite simple: the founder and one of the owners of this business, Andrey Panzhukov, the 2020 FreeFly Champion of Russia, is a professional parachutist and understands perfectly well what a high-quality simulator should be like.

Here athletes prepare for competitions and practice new flight skills under the supervision of the best wind tunnel and parachuting instructors.


Reliable support and care of titled instructors of wind tunnel and parachuting awaits you ov


Dmitry Plavutsky


Alexey Vasilenko

Sign up

Atmosphere of the complex

Location with its own free parking on the territory of Sokolniki Park

A conceptual space for recreation, entertainment and training for large companies and individual visitors

A place where a new reality is discovered


Stylish, comfortable flight equipment for which you do not have to pay (overalls, disposable caps, helmet, shoes)

Cozy cafe on the territory of the complex

Convenient transport accessibility within the city

Our chips

Wind tunnel with high-quality airflow

Low noise level in wind tunnel

The flight zone diameter is 3 m, height is 11 m.

The best instructors

Can fly in any weather


Show all

How to dress?

Wear or bring comfortable sportswear that allows you to move freely (T-shirt, light trousers or leggings). The instructor will provide you with a helmet, suitable overalls and, if you didn’t bring, sneakers. He will also give you a set of earplugs and tell you how to use them. You don’t have to worry about hygiene – shoe covers and disposable caps are provided for shoes and a helmet. More about preparation.

What do I need to bring?

Don’t forget to bring your identity document (passport or driver’s license). Of course, you can and should take friends or relatives with you with whom you can share your impressions.

Wind tunnel restrictions?

As with any attraction, the wind tunnel has a number of limitations. Children over 4 years old are allowed to fly. The flight is not recommended for pregnant women, people with cardiovascular diseases and various injuries, as well as people weighing more than 120 kg. People under the influence of alcohol and drugs are not allowed to fly. For the rest there are no barriers! More about contraindications.

How to get to the complex?

We are located on the territory of Sokolniki Park at Bogorodskoye Highway 18, building 2. You can also get to us from the nearest metro station Sokolniki by tram 4p or 25 (to the stop Bolshaya Shiryaevskaya street). View the address of the wind tunnel on the map.

Do you have discounts?

Yes, we provide our clients with exclusive bonuses and free minutes! There are special rates for athletes.

Ask your question



We are 5 years old!

Wind tunnel schedule for the New Year holidays

Changes in flight fares



Geolocation QR code:


Moscow, Bogorodskoe highway, possession 18, building 9 (Sokolniki park)


+7 (495) 260-85-58 9000 3

Operating mode:

from 10:00 to 23:00, seven days a week

Aerodynamics from STL / Sudo Null IT News

Why (because you need to feed the ballistic model)

Data is needed to plot the trajectories of the spacecraft and their carriers. First of all – aerodynamic. They are needed when determining the forces and moments acting on the spacecraft (or its stage), as well as for assessing the thermal state of the structure. Characteristics depend on the appearance of the spacecraft and flight parameters and usually look like extensive sheets with dependencies of the corresponding coefficients on angles of attack, Mach numbers, altitudes and much more.

There are several ways to get these numbers:

  1. CFD. All sorts of ANSYS, floEFD, solidWorks flow simulation and so on. Large and serious software packages with a serious price tag. And for a startup sawing its shuttle in the garage, such software will cost about the same as the garage itself.

  2. Approximate graphic-analytical methods. Because people have been launching a variety of devices into the air and vacuum for a long time. Data on their flow around pipes and free flow are listed in reference books, tabulated and parameterized by extensions, sweep angles, profile thicknesses, and so on and so forth. The problem with such approaches is the need to work “by eye” with various books and atlases of characteristics, transfer numbers from paper to electronic form and suffer, suffer, suffer when the geometry takes on forms other than “cylindrical body with a thin wing”

  3. Approximate methods based on local flow parameters. They occupy an intermediate position between the first two and are based on dividing the geometry of the studied aircraft into fragments, the interaction between which can be neglected. Since disturbances in the flow cannot propagate faster than the speed of sound and beyond the shocks, such methods work best at high speeds (M ~ 8-10 and higher). We will deal with them

The two main methods are the tangent wedge method and Newton’s method. In each of the methods, the aircraft surface is divided into elementary areas, then the local angle of attack (between the plane and the oncoming flow) is determined. In the method of local shocks, the angle of attack is compared with the maximum allowable (after which the shock moves away from the surface), then the degree of pressure increase in the flow is determined.

N.F. Krasnov. Aerodynamics. volume 1.
Theta is the angle of deviation of the shock, beta is the angle of inclination of the surface that creates the shock, delta is a parameter that depends on the adiabatic exponent. By solving this equation by Newton’s method, we obtain the necessary jump angle and flow transformation parameters.

In Newton’s method, it is assumed that all that part of the specific impulse of the flow that was normal to the streamlined surface will turn into excess pressure.

Fundamentals of Newton’s method.
N.S. Arzhannikov, G.S. Sadekova. “Aircraft Aerodynamics”

If the angle is negative, then the flow experiences rarefaction, which is well approximated for small angles. If the angle is exceeded, then the flow when flowing around an obtuse angle is rarefied to a vacuum (in any case, the pressure on the surface becomes zero)

Knowing the dimensions of the aircraft, it is possible to determine its washed surface and the characteristic dimension. With these figures, based on the calculation and experimental data, it is possible to calculate the friction coefficient of a flat plate and supplement it with the drag coefficient of the aircraft.

Estimation of friction of an equivalent plate according to the Reynolds criterion

The case of a highly rarefied gas (determined by the Knudsen number, depending on the speed, density and dimensions of the aircraft) stands out separately. In this case, Newton’s method is modified taking into account the arbitrary movement of gas molecules after a collision with the surface

Everything will turn into triangles

Now we need to obtain data on the aircraft geometry. There are many formats, but STL seems to be the most convenient. Each entry exhaustively describes the elementary area on the surface of the body through the three points that form it, and the oriented normal vector. And Blender, which I know fairly well, can export models to it. However, there is a nuance – the STL generated by Blender is a binary file, the reading of which is slightly different from working with the usual text files (csv, json, and so on). But for such occasions, NodeJS has the Buffer class. And the binary STL itself is provided with detailed documentation.

To begin with, through the open method supplied in fs, we open the binary for reading, after which we select the size field from the received information and create the buffer we need for reading data.

This is the code for working with STL Nothing special, we just slide another 50 bytes to the right each time

Further actions are determined by the binary STL specification. The first 80 bytes are a header with information about the program in which the binary was created. They can be skipped. The next 4 bytes are critical – this is a 32-bit Unsigned Int that stores the number of triangles in the model. As soon as we know the number of triangles, we will begin to read them.

Each triangle consists of consecutive 32-bit Float Little Endian. The first three numbers are the normal reduced to the unit vector. Then triples of points (X, Y, Z) defining the plane. After 48 significant bytes comes another 2 bytes with a 16-bit Unsigned Int, which some editors use to store the surface color. But we obviously don’t need color to calculate the flow around.

Test 1. Obtuse body

For the first calculation, we choose a rounded cone with an obtuse stern. Firstly, on such a geometry it is possible to catch all possible cases from flow deceleration on a rounded toe to flow around the aft section with a rarefaction to vacuum. And secondly, for this geometry there are analytical calculation data and the results of aerodynamic blowing, which will serve as a standard (Unfortunately, the model is drawn in a size that does not match Reynolds)

This is a model This is a test model. Direction of flow – from right to left

At a qualitative level, the behavior of the normal and longitudinal force coefficients coincides with the theoretical calculation. At the quantitative level, there is a discrepancy of 5-10% with respect to theory:

Theory and modelSolid lines – calculated values, dots – theoretical calculationInitial data for starting the calculation. Still “Aerodynamics…” Arzhanikov and Sadekova

Test 2. Apollo

The next step is Apollo. Let’s compare the lift-to-drag ratio from the DSMC Simulations of Apollo Capsule Aerodynamics… article (which I used in the post about capsule ships) with the model one.

Aerodynamics of “Apollo” Line – model calculation, through points – data from the AIAA article. The graph we are interested in is black, for a continuous medium. Points taken from it

Graph of quality from a height of 85 km (where continuum methods are fully applicable) with model calculation. As in the previous case, one can see a confident convergence with an average error of ~5%. By the way, let’s pay attention to the red and blue quality graphs from the AIAA article – the lift-to-drag ratio for rarefied flows is rapidly decreasing.

Test 3. Wing with a thin profile

The main limitation of the method is low speeds, for which interactions between different parts of the streamlined body can no longer be neglected. This is especially noticeable when solving the problem of flow around a cone at low (M ~ 2 – 3) velocities. Here the method will give overestimated coefficients (especially resistances).

Calculation in the speed range M = 2 – 6 (lift coefficient from the angle of attack) Red graph – thin profile theory, blue – model calculation

The first graph – Mach 2, the second – Mach 4, the third – Mach 6. Angle of attack – in degrees ~ 90 km. However, the calculation shows good convergence starting from M=4, and the resulting lift-to-drag figures correlate well with the “Küchemann barrier” .

The solid line is the theoretical limit of the lift-to-drag ratio, the dots are the results of the model calculation. Horizontally – Mahi

And now – a bit of hooliganism (and a spoiler for the next series of articles). I think I’m starting to figure out how we can beat Elon Musk. And this is a zero step towards taking over the world.

A device for capturing the world, if something has an aerodynamic quality of the pepelats of the order of 2.