Strain Gage Wind Tunnel Balances
Modern Machine & Tool Co., Inc. is a designer and manufacturer of Multicomponent Wind Tunnel Balances for the aerospace industry. Our one-piece compound balances offer significant advantages in accuracy, reliability, and cost over multi-piece balances. Typical features of Six-Component Wind Tunnel Balances are as follows:

Simultaneous and independent measurement of Normal Force, Axial Force, Pitch Moment, Roll Moment, Yaw Moment, and Side Force

Strain Gage Bridge Resistances available from 120 Ohms to 5000 Ohms

Maximum Excitation Voltage Capabilities to 20 Volts

Output Voltage Ranges from 5mv to 20mv Full Scale

Temperature Compensation for Span and Zero Errors from -20oF to +180oF

Calibration of All First and Second Order Interaction Terms

Overload Safety Factors Greater than 2 to 1

Combined Linearity, Hysteresis, and Repeatibility Accuracies of 0.1% to 0.5% Full Scale

Hundreds of Stock Designs available

Unique Balance Designs to Meet Special Load or Installation Requirements

Custom Model and Sting Attachment Designs

Other Specialized Force and Moment Measuring Balances and Sensors

External Multicomponent Balances

Custom Load Cells

Rotating Multicomponent Balances

Control Surface Hinge Moment Sensors

Rotor Test Stand Multicomponent Balances

Powered Model Motor Torque and Thrust Balances

Waterproof Internal Six-Component Balances

Strain Gaged Composite Wings, Control Surfaces and Rotor Blades

Semiconductor Strain Gaging for Measurement of Low Level Dynamic Signals
Specialized multicomponent balances for use in cryogenic environments.
Helicopter rotor balance for six-componentmeasurements of rotating model rotor systems.
Integral force and moment balances for aerodynamic model control surfaces.

TYPICAL SIX-COMPONENT BALANCE SPECIFICATIONS
DIA
"D"
INCHES
LENGTH
"L"
INCHES
LOAD ABOUT MOMENT CENTER OF THE BALANCE (LB OR IN-LB )
NORMAL
FORCE
AXIAL
FORCE
PITCH
MOMENT
ROLL
MOMENT
YAW
MOMENT
SIDE
FORCE
0.400
3.750
3
2
5
3
3
2
0.500
4.700
75
15
75
15
25
25
0.750
6.250
150
30
200
50
100
75
1.000
8.375
400
100
600
100
200
100
1.250
10.000
600
200
1500
400
700
300
1.500
11.500
1500
300
2500
800
1200
600
1.750
12.250
2000
400
3500
1500
2000
800
2.000
12.750
3000
500
7500
3000
3000
1200
3.000
21.500
3000
500
25,000
10,000
10,000
1100
4.000
24.250
5500
500
40,000
35,000
25,000
1500
5.000
26.000
7500
3500
90,000
24,000
12,000
1000
For More Information, Please Contact;
sales@mmtool.com
• Toll Free (800) 482-1835 • Phone (757) 873-1212 • Fax (757) 873-8239 •

Modern Machine & Tool Company Inc.
11844 Jefferson Avenue
Newport News, Va. 23606-2587
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