Strain gauge cabling, conditioning, and sensitivity calculations for the CT-114 (Tutor) aircraft aft fuselage and empennage full-scale fatigue test
Abstract
The monitoring of strain on the aft fuselage and empennnage of the CT-114 is accomplished by the cabling, conditioning and sensitivity calculations described. Gauge types and locations simulate a subset of those which formed part of the CL-41 flight load survey strain gauge report by Canadair. Eighty-eight bridges are monitored. Eight of those include original flight load survey gauges. The effect of lead resistances are figured into the calculations of shunt strain simulation. Two data acquisition systems were employed. Sixty out of a 64 channel system manufactured by MTS Systems Corp QUAD system were used along with 30 channels on a Hewlett Packard system. Cabling and calculations spreadsheets as well as schematics of quarter, half and full bridge set-ups are included for each system.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- February 1990
- Bibcode:
- 1990STIN...9129534A
- Keywords:
-
- Aerodynamic Loads;
- Computers;
- Data Acquisition;
- Fatigue Tests;
- Strain Gages;
- Tail Assemblies;
- Circuit Diagrams;
- Communication Cables;
- Fuselages;
- Instrumentation and Photography