TT65 PRO – Biggest machine among commercially feasible

Best for image oriented or government ventures where business is secondary to vision, opportunity and publicity.

The groundbreaking indoor skydiving wind tunnel that offers an unparalleled flying experience and state-of-the-art safety features. Currently under construction in Qatar, this colossal wind tunnel boasts the second largest diameter in the world, setting new standards in the indoor skydiving industry. Its cutting-edge design and technology make it the ultimate choice for hosting world championships, including dynamic flying disciplines. Experience the future of indoor skydiving with the TT65 PRO.

World Championship Suitability

The TT65 PRO’s exceptional size and innovative design make it an ideal venue for hosting the world championship, including dynamic flying disciplines. Its spacious flight chamber can accommodate larger teams and more complex maneuvers, allowing athletes to push the boundaries of their skills and showcase the true potential of indoor skydiving.


Power Efficiency

Power efficiency is crucial for indoor skydiving projects, as it directly affects operational costs, environmental impact, and long-term sustainability. The TT65 PRO’s advanced engineering ensures that energy consumption is minimized without sacrificing performance or safety. This energy-efficient design translates into lower energy bills and reduced carbon footprint, making it an attractive option for environmentally-conscious operators.


Safety is paramount in the world of indoor skydiving, and the TT65 PRO incorporates several features to ensure a secure and enjoyable flying experience for all:
1. Flight chamber diffusion ratio of 2: This design aspect guarantees a smooth and stable airflow, minimizing turbulence and enhancing the overall flying experience.
2. Well-balanced safety net with large strokes close to the walls: This feature provides a cushioned landing surface, ensuring maximum protection in case of accidental falls or collisions.
3. Curved entrance to the flight chamber: This design prevents injuries by ensuring that potential strikes go tangential to the surface, reducing the risk of direct impact.
4. Noise levels of 55 dbA in close proximity to the flight chamber: This feature reduces disturbance for bystanders and contributes to a more enjoyable environment both inside and outside the wind tunnel.

As the only TT65 PRO is still under construction, our team of experts at TunnelTech are committed to providing unmatched installation experience and support throughout the entire process. We take pride in ensuring that every aspect of the project is completed to the highest standards, from design to construction and beyond.


General Parameters

Flight сhamber inner diameter 6.5 m (21’4″)
Glass height default 18m (59′)
Glass height maximum 36 m (118’11”)

Dimensions Double Loop

Height 37.7 m (123’7″)
Length 38.3 m (41’5″)
Width 14 m (45’9″)

Dimensions Single Loop

Height 45 m (147’6″)
Length 30 m (98’4″)
Width 12 m (39’4″)

Power Requirements

Power capacity (min) 3360 kW
Average time-weighted power consumption 1171 kW
Power consumption @ 180 km/h 857 kW
Standard power capacity 3360 kW
Advanced power capacity n/a
Beast power capacity n/a


Noise level 60 dBA (optional)
Darcy-Weissbach drag coefficient, Xi 0.27
Max. Speed @ Standard power capacity 275 km/h
Max. Speed @ Advanced power capacity 290 km/h

Flight Chamber

Diameter 6.5 m (21’3″)
Height (minimum) 21.5 m (70’5″)
Area 33.16 m (108’8″)
Default glass height 18 m (59′)
Glass type chemically strengthened, non-shattering
Glass total thickness ≥50 mm
Low iron glass yes
Optional maximum glass height up to 36 m (118’11”)
BASE jumping chamber height 19 m (62’3″)
Patented safety net maintains long stroke in close proximity to the walls
Safety net tensioner 2 per cable
Speed drop (Diffusion rate) 1.47
Portal entrance shape curved, collision safe
Portal entrance material impact-dampening rubber
Entrance area speed drop ≤1%

Decompression Chamber

Airlock doors automated
Airlock emergency exit yes
Smooth decompression yes
Transit time of customer groups to/from the flight chamber <1 min

Axial Fans

Supplier Tunneltech , Germany
Quantity 6
Power (per fan) @ Standard power capacity 560 kW
Power (per fan) @ Advanced power capacity n/a
Location return vertical airduct
Axel orientation vertical
Diameter 3.37 m (11′)
Effective crossectional area 7.68 m (25’2″)
Blades material carbon fibre
Blades count 8
Automated lubrication yes


Material of FC Airjet (FC Contraction) FRP
Material of FC Diffuser glass
Material of return vertical airducts FRP/steel

Climate Control

Ventilation (a.k.a. Passive Cooling) yes
Max ventilation to airflow ratio custom
Active Cooling System yes (optional)
Additional drag, caused by active cooling system 0 Pa (No drag)
Active Cooling type through turning vanes
Recommended Chiller Cooling Capacity 2400 kW (8,189,140 BRU/h))


Color LED backlight strips between glass panels yes, flicker-free (optional)
LED Strips power per m 10 W
LED Strips frame rate 60 fps
LED Projectors yes, flicker-free (optional)
LED projectors default number installed (optional) 8 – 32 (optional)
LED projectors max. power 90 W
LED projectors max. luminous flux power R:1950 G:2700 B:750 lumen
LED projector dimming capability 0 – 100%
LED control from Main Panel yes
LED anti-flicker function high frequency PWM
LED projector PWM frequency 1 kHz
LED color depth 24 bit, 16,777,216 colors
LED projector color depth 36 bit, 64 bln colors


Main panel control display 28″
Touch screen main panel yes
Flight chamber info display 31.5″
Operator desk speed controller autonomous knob
Waiting zone speed controller autonomous knob
Base chamber speed controller autonomous knob
Speed controller knob resolution 0,1%

Turning Vanes

Chord 500 mm
Chord-to-Spacing ratio ≥3:1
Material aluminium
Surface treatment anodized
Cooling channels 6
Turning vane heat transfer ratio, per meter @ 10-35m/s airflow speed >105 (±15) W/(m*K)


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