Wind tunnel variable range balance

Details Wind tunnel variable range balance Wind tunnel variable range balance

1990-12-26

1992-05-19

Woodiel, Donald O.

Measuring and testing

Wind tunnel: aerodynamic wing and propeller study

7386204, G01M 900

Patent

active

051136961

ABSTRACT:
An improved wind tunnel six component balance that is capable of accurately measuring low loads and high loads. The variable range balance has low load axial elements that will measure low loads precisely. When the load is increased over the low range capability of the measuring elements, in either the positive or negative load direction, pressure is applied to either the forward or aft bellows that are mounted in the inner tubular rod of the balance. This pressure applies a counter balance in force that reacts against the load applied. The results of this force is that the low loads links will always stay on range.

REFERENCES:
patent: 2918816 (1959-12-01), Ormond
patent: 3878713 (1975-04-01), Mole
patent: 4688421 (1987-08-01), Pzsolla
patent: 4845993 (1989-07-01), Horne
patent: 4938059 (1990-07-01), Fauche et al.

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