Flight Demonstration Wind Tunnel

Product Code : SLE/EA/05
  • Aircraft able to move vertically and pitch about the quarter chord point independently.
  • Simulates take off , level fl ight, cruise and landing.
  • Demonstrations include aerofoil lift, stall, longitudinal stability and transient motion.
  • Includes electronic display of air speed, attitude, altitude, pressure and lift.
  • Tufts on the wing clearly demonstrate the phenomenon of separation and stall.
  • Brightly illuminated working section.
  • Adjustable centre of gravity of the model. 

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Laval Nozzle Pressure Apparatus

Product Code : SLE/EA/06
  • Demonstrates the thermodynamic and fluid mechanics of the adiabatic expansion of air through subsonic and supersonic nozzles. 
  • Includes interchangeable convergent, convergent - divergent Laval nozzles and convergent parallel nozzle.Compressed air passes through the pressure regulator and an isolating valve. 
  • The airflow then settles as it passes along a horizontal pipe, through an orifice and out to atmosphere. 
  • The temperature and pressure displays accurately measure temperatures and pressures at key points around the apparatus, including the pressures around the orifice which students use to determine overall mass flow. 
  • For ease of visibility and for good engineering practice, the analogue gauge also shows pressure in the chest. 
  • A stainless-steel probe on a manually adjustable, vertical traverse measures the pressure distribution along the axis of the nozzle. 
  • A digital indicator measures the probe position in the nozzle. 

Its floor-standing frame holds:

  • A pressure chest with a removable lid and nozzle traverse mechanism.
  • A useful worktop.
  • An instrument frame with digital pressure and temperature displays.
  • A pressure regulator to maintain the inlet/upstream pressure, with an analogue reference pressure gauge.
  • Three interchangeable, profiled and polished brass nozzles with mimics that fit on the traverse mechanism. 

Dimensions and weight:

  • Length 2900 mm x depth 600 mm x height 1730 mm and 123 kg 

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Flow Visulisation

Product Code : SLE/EA/07

Technical Specification:

  • Electrical Supply: 100 VAC to 120 VAC 50 Hz to 60 Hz,220 VAC to 240 VAC 50 Hz to 60 Hz
  • Smoke Generator dimension: 410 mm x 180 mm x 370 mm 
  • Weight: 14 kg
  • CO2 gas bottle and bracket: 07.5 kg
  • Smoke tunnel duct in three pieces including working section: 10.5 kg
  • Smoke oil: 2.5 litre
  • Pipe and exhaust duct: 2.5 kg
  • Total net weight: 37 kg
  • Approximate packed dimensions and weight: 0.32 m3; 42 kg
  • Storage temperature range: –25°C to +55°C
  • Operating temperature range :+5°C to +40°C
  • Operating relative humidity range: 80% at temperatures < 31°C decreasing linearly to 50% at 40°C

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Effect And Jet Flow

Product Code : SLE/EA/08
  • This module consists of an aerodynamically shaped nozzle from which a jet of air emerges. 
  • A second wall may be introduced at the other side of the jet, which may be switched from one side to the other, as is done in a fluidic flip-flop type switch. 
  • The effect of sealing the walls and adding a central splitter to the device are also investigated.
  • This flows against a wall to which it attaches. 
  • The wall may be rotated to show the deflection of the jet through large angles due to the effect. 

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Circuit Breaker

Product Code : SLE/EAM/11

The apparatus runs on safe, low-voltage DC and shows both a slow overload which operates the thermal trip together with a current surge overload operating the solenoid trip. 
This unit will prove invaluable for showing applications of electromagnetic devices (the solenoid) and bi-metal strips as well as bringing them all together to demonstrate the key principles of the modern domestic circuit breaker. 
The unit is contained in a robust tray with acrylic protective cover and requires a 12V DC supply through 4mm sockets.

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Joule Gun

Product Code : SLE/EAM/12

The control box provides five high value capacitors which can be switched into the charge circuit as required. 
This highly original apparatus offers an exciting application of topics such as energy storage, capacitor charging, mechanical energy, efficiency and electromagnetism. 
When the FIRE button is pressed the energy stored is released as a pulse into a low resistance coil to fire a small steel projectile. 
Mass 0.5kg
Variables include, voltage, time, capacity, distance, kinetic and potential energy. 
Dimensions 220 x 110 x 80mm excluding coil

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Vane Pump

Product Code : SLE/EFM/01
  • Dimensions: 300 mm x 300 mm x 300 mm (approx)
  • Weight: 9 kg 
  • For use with the Positive Displacement Pump Module this pump is ideal for student experiments, demonstrations and projects. 
  • The vane pump is a positive displacement pump. 
  • It has a fixed displacement balanced vane that delivers a given volume of fluid (oil) for each full rotation of the pump shaft. 
  • The pump rotation determines the flow direction, but you only test the pump in one direction, determined by the Universal Dynamometer. 
  • Self-sealing connections reduce oil spillage and simplify installing the pump to the pump module.

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Electromagnetic System

Product Code : SLE/EAM/13

Tappings at 100, 200, 300, 400, 500 and 600 turns
A self-contained unit allowing students to study the effect of current and number of coils on the strength of an electromagnet.
Ideal for use with the Science Lab Export Power Supplies.
Use paper clips as weights.
Requires a DC low voltage power supply

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