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Technical Specifications & Documentation L1 Stationary Vertical Wind Tunnel

The following technical information presented is considered "general information". Sensitive information about the design & construction of the L1 Vertical Wind Tunnel will be released to Pre-Qualified Buyers after signing a Nondisclosure Agreement with Vertical Wind Tunnel Corporation.

  1. Site
  2. Air Column
  3. Motor & Control Systems
  4. Sound Measurements
  5. Airspeed Readings
  6. Power Consumption
  7. Efficiency

This page last updated:
3/21/05

  1. Site
    Size in Feet: approx 110 - 170L X 50W X 20T
    The overall shape of the site is rectangular, and the tunnel itself can be mostly buried.
    Length varies depending on the configuration you choose for your application.
     
  2. Air Column
    Nozzle: 12.8 foot diameter
    Expansion of the column has been officially measured at 13 feet
     
  3. Motor & Control Systems
    Manufactured by General Electric
    5 year Warrantee Included from GE
    Custom Order- Lead Time 12 months
     
  4. Sound Measurements
    Exit from 35 ft away:
    -500 rpms under 80 db
    -650 rpms under 95 db
    Exit from 2 ft away:
    -500 rpms 110db
    -650 rpms 115db
    Inside Motor Room:
    -500 rpms 90db peak/80db average
    -650 rpms 90db peak/85db average
    Spectator Area: 66 ft away
    -500 rpms 78 db
    -650 rpms 83 db (quiet enough to carry on a cellphone conversation)
     
  5. Airspeed Readings (Averages)
    550 rpms = 110 mph
    575 rpms = 115 mph
    600 rpms = 120 mph (our most commonly requested speed)
    650 rpms = 125 mph
    675 rpms = 128 mph
    700 rpms = TBA
    720 rpms Max RPMs = TBA/+-140 mph expected
    Average airspeeds must be calculated as the temperature & density of the outside air can dramatically affect the air column in regards to speed.
     
  6. Power Consumption
    550 rpms = 45.1 %
    575 rpms = 50.6 % (Half Power)
    600 rpms = 57.1 %
    650 rpms = 66 %
    675 rpms = 70%
    700 rpms = TBA
    720 rpms Max RPMs = TBA/+-140 mph expected
     
  7. Efficiency is the measure of how much energy goes in, compared to the work that is done. To a VWT operator it is how much fuel is used to produce the jet (flight area). A wider or faster jet has more energy and so requires more power to produce. Basically, if the jet has 1000 kW of energy, and the VWT is 70 % efficient, a 1300 kW motor is required. A less efficient VWT will require a larger motor and so costs more to operate per hour.

    RPMs

    Jet MPH

    Shaft HP

    % Power

    Kilowatts

    Jet HP

    Efficiency %

    505

    100

    1065

    35.5

    882

    855

    80.2

    535

    106

    1212

    40.4

    1004

    1017

    83.9

    550

    110

    1355

    45.1

    1123

    1137

    83.9

    575

    115

    1520

    50.5

    1260

    1300

    85.1

    600

    118

    1715

    57.1

    1422

    1477

    86.1

    670

    128

    TBA

    70.0

    TBA

    TBA

    TBA

    Additional measurements will be posted as they become available


 

 

 

 


 

This L-1 is at it's highest efficiency at it's design speed of 120 MPH, which is more than adequate for flyers at all stages.  L1 can be adjusted to optimal efficiency at other airspeeds depending on your application.

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