2025年1月21日 · The four types of airspeed are Indicated Airspeed (IAS), Calibrated Airspeed (CAS), True Airspeed (TAS), and Equivalent Airspeed (EAS). These speed measurements are important for understanding an aircraft’s performance in varying conditions.

2021年5月28日 · Calibrated airspeed is indicated airspeed corrected for instrument and position error. The largest error occurs at high angle of attack when air enters the pitot tube at an excessive angle. It's important because it's the easiest to obtain fundamental indication of speed through the air that doesn't have some presumed error.

2023年5月8日 · pH and pOH are defined as the negative log of hydrogen ion concentration and hydroxide concentration, respectively. pOH is related to pH and can be easily calculated from pH.

2022年6月8日 · The POH is where you get your fuel burn per hour. That, combined with GS and ETE per leg (which you’ll get from TAS and winds aloft) will give you the fuel burn per leg, which is a critical part of your flight planning.

The difference between IAS and CAS varies greatly from level cruise to slow stall speeds/configurations. CAS is a correction for installation and instrument errors, so there will be more errors (for most airplanes) when the attitude is nose high and slow and that is why the CAS is so much higher than the IAS in your example.

2021年10月31日 · I understand an airspeed indicator shows the indicated airspeed (IAS), not the calibrated airspeed (CAS). Accordingly, there should be a small difference between the the indicated and the calibrated airspeed.

pOH is a measure of the hydroxide ion (OH -) concentration in a solution. pOH is always written with a lower case "p" and an upper case, or capital, "O" and "H"

2021年6月15日 · In chemistry, pOH is a measure of hydroxide ion concentration. The pOH scale is the reverse of the pH scale. pOH and pH are ways of describing how acidic or basic an …

The compliment to pH is pOH, a measure of the concen-tration of hydroxide ions: pOH= −log10[OH−]. A high pOH corresponds to an acidic solution, while a low pOH indicates a basic solution. pH and pOH are related as. Example: The Ka for nitrous acid, HNO2, is 4.0×10−4 . Determine the pH and pOH of 0.1 M nitrous acid.

The pOH scale is similar to the pH scale in that a pOH of 7 is indicative of a neutral solution. A basic solution has a pOH less than 7, while an acidic solution has a pOH of greater than 7. The pOH is convenient to use when finding the hydroxide ion concentration from a …