Air Balance

Air Balance for Wind Tunnel Testing - 2 air suppliesAeroFMS has 40+ years of experience with air (flow-through) balances. Air balances are used where power simulation is required but a subscale engine (simulator) cannot be used. Multiple air supply systems bridge the air across the metric gap of the balance, minimizing momentum effects. The balances can provide for suction at the inlet, exit nozzle flow (exhaust pressure), and the ability to vary the ratio. Each air supply can be individually controlled at pressures from 600 – 1000 psi. The air supply tubes run internal to the balance core.

 

 

 

 

Air Balance Assembly for Wind Tunnel testing with 3 air suppliesWe have accomplished extensive calibrations that resulted in balances of high quality and reliability. To support balances of these types, we have also done extensive research in fatigue life of bellows. The welded bellows design is incorporated with precision flanges.

 

 

 

 

 

 

 


Accomplished designs

 

Max. Dia. (in)

NF (lb)

PM (in-lb)

SF (lb)

YM (in-lb)

RM (in-lb)

AF (lb)

MC-24-1.50

1.50

2,400

4,000

2400

4000

750

-

MC-15-2.5

2.50

1,500

6,000

750

3,000

2,000

200

MC-16-3.0

3.00

1,600

6,750

500

2,000

1,000

60

MC-10-3.75

5.20

1,400

4,175

500

2,500

2,500

500

MC-59-3.5

7.50

5,900

17,711

1,800

5,400

8,000

800

MC-130-8.0

8.00

13,000

107,250

3,000

18,000

32,000

500

MC-30-8.80

9.50

3,000

18,000

3,000

18,000

4,000

400

 Air Systems

Balance ID

Number Air Supplies

Mass Flow (lb/sec)

Max. Pressure (psi)

MC-24-1.50

1

 

1000

MC-15-2.50

2

4.0, 1.25

500

MC-16-3.00

1

1.5

500

MC-10-3.75

3

7.5, 4.0, .2

500

MC-59-3.50

1

15.2

600

MC-130-8.0

2

13.0, 13.0

600

MC-30-8.80

2

9.9, 5.0

500 / 20

 

 

Air Balance Assembly for Wind Tunnel Testing with 3 air supplies Air Balance Input for Wind Tunnel Testing with 2 air supplies