More warm and dust free activities.

I always have a calibration instrument with me to the field for a local check of the airspeed measurement of the Taurusses.
To limit the amount of documents to take with me I incorporated two more calculations in my programmable calculator.
First the formula to calculate the airmass/density, with inputs barometric pressure, relatieve humidity and temperature.
Second calculation of dynamic pressure, with use of airspeed and airmass/density.

Also these calculations I can combine with the "solver" of the HP 42S, for example calculate airspeed when dynamic pressure and density are known.
A provit of a calculator also is, I do not have to interpolate as we normaly did in the past with data tables.

The barometric pressure can I have from a local television and radiostation

More to come, but, preparations for field equipment for calculations are nearly finished now.
Next step is wake up MODIS again and that can be interesting because MODIS is asleep for many years.

Cees