Computer program reduces and provides profile plot of surface plate calibration data

Computer program which yields CRT displays will decrease the time and labor required to reduce and provide a profile plot of surface plate calibration data. The displays depict actual and resolved data points for each individually calibrated line

Suspended chains damp wind-induced oscillations of tall flexible structures

Hanging-chain system, which is a form of impact damper, suppresses wind-induced bending oscillations of tall cylindrical antenna masts. A cluster of chains enclosed in a neoprene shroud is suspended inside the tip of the antenna mast, forming a simple method of damping structural vibrations

Viscous pendulum damper Patent

Mercury filled pendulum damper for controlling bending vibration induced by wind effect

Viscous-pendulum damper suppresses structural vibrations

The viscous pendulum damper consists of a cylinder containing round trays on which round lead slugs rest. When assembled, the container is filled with a viscous liquid and attached, with axis vertical, to the structure. The device permits varying the damping of structural vibrations

Decoupler pylon: wing/store flutter suppressor

A device for suspending a store from a support such as an aircraft wing and more specifically for increasing the flutter speed of an aircraft flying with attached store and reducing the sensitivity of flutter to changes in the pitch inertia and center of gravity location of the store is described. It comprises softspring where the store pitch mode is decoupled from support modes and a low frequency active control mechanism which maintains store alignment. A pneumatic suspension system both isolates the store in pitch and, under conditions of changing mean load, aligns the store with the wing to which it is attached

Test unit free-flight suspension system Patent

Free flight suspension system for use with aircraft models in wind tunnel test

How Right-to-Work Laws Affect Wages

I examine the wage effects of Right-To-Work (RTW). Using state-level data, I estimate that, ceteris paribus, RTW states have average wages that are significantly higher than non-RTW states. This result is robust is across a wide variety of specifications. An important distinctive of this study is that it controls for state economic conditions at the time states adopted RTW. States that adopted RTW were generally poorer than other states. Failure to control for these initial conditions may be the reason that previous studies have not identified a positive wage impact for RTW.Right-to-Work

The Robust Relationship Between Taxes and State Economic Growth

I estimate the relationship between taxes and economic growth using data from 1970-1999 and the forty-eight continental U.S. states. I find that taxes used to fund general expenditures are associated with significant, negative effects on economic growth. Further, this finding is robust across (i) alternative variable specifications, (ii) alternative estimation procedures, (iii) alternative ways of dividing the data into ¡°five-year¡± periods, and (iv) allowing for individual-specific time and state effects. I also provide an explanation for why previous research has had difficulty identifying this ¡°robust¡± relationship.U.S. states; Economic development; Economic growth; Fiscal policy; Taxes; Tax burden; Panel data