Projects:EASA PPL/Units & General: Difference between revisions
(Created page with "== Distances == * 1 NM = 1,852 km * 1 NM = 6080 ft * 1 m = 3,28 ft * 1 statute mile = 1,609 km == Weight == * 1 kg = 2.205 pounds == Volume == * 1 US-Gal = 3.785 L * 1 Imp-Gal = 4.546 L == Pressure == * Standard Pressure = 1013.25 hPa * 1hPa = 27ft == Sphere == * Big circle: 1° = 60NM == Speed == * ICE-T ** Indicated Airspeed *** ↓ correct for instrument error ** Calibrated Airspeed *** ↓ correct for compressibility (negligible below 200kts and 10.000ft ) **...") |
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* ICE-T | * ICE-T | ||
** | ** '''I'''ndicated Airspeed | ||
*** ↓ correct for instrument error | *** ↓ correct for instrument error | ||
** | ** '''C'''alibrated Airspeed | ||
*** ↓ correct for compressibility (negligible below 200kts and 10.000ft ) | *** ↓ correct for compressibility (negligible below 200kts and 10.000ft ) | ||
** | ** '''E'''quivalent Airspeed | ||
*** ↓ correct for altitude and non-ISA temperature (~ +2% for each 1000ft | *** ↓ correct for altitude and non-ISA temperature (~ +2% for each 1000ft | ||
** | ** '''T'''rue Airspeed | ||
== Altitude == | == Altitude == | ||
| Line 37: | Line 37: | ||
* Density Altitude (corrected for temperature) | * Density Altitude (corrected for temperature) | ||
* True Altitude | * True Altitude | ||
== Q-Codes == | |||
{| class="wikitable" summary="Most common Q codes used in aviation for altimeter settings, including meaning and sample use" | |||
|+ Altimeter settings | |||
! Code !! Meaning | |||
|- | |||
| '''QNH'''|| Atmospheric pressure at mean sea level (may be either a local, measured pressure or a regional forecast pressure (RPS)). When set on the altimeter it reads altitude. | |||
|- | |||
| '''QFE'''|| Atmospheric pressure measured at the airport station. <br> When set, the altimeter reads the height above the station. Not in common use. | |||
|- | |||
| QNE || Indicated altitude at the landing runway threshold when 1013.25 hPa or 29.92 inHg (atmospheric pressure at sea level in the International Standard Atmosphere) is set as altimeter setting. | |||
|- | |||
| (QFF) || Atmospheric pressure at a place, reduced to MSL using the actual temperature at the time of observation as the mean temperature. | |||
|} | |||
{| class="wikitable" summary="Most common Q codes used in aviation for radio navigation, including meaning and sample use" | |||
|+ Radio Navigation | |||
! Code !! Meaning | |||
|- | |||
| '''QDM'''|| Magnetic bearing ''to'' a station (DM...direction magnetic) | |||
|- | |||
| '''QDR''' || Magnetic bearing ''from'' a station (R...reciprocal) | |||
|- | |||
| QUJ || True bearing/track ''to'' a station | |||
|- | |||
| QTE || True bearing/track ''from'' a station | |||
|- | |||
| QFU || Magnetic bearing of the runway in use | |||
|- | |||
| QDL || Series of bearings taken at regular intervals | |||
|- | |||
| QGE || Distance | |||
|- | |||
| QTF || Position in relation to a point of reference or in latitude and longitude | |||
|} | |||
== Angles == | == Angles == | ||
Latest revision as of 12:48, 18 January 2023
Distances
- 1 NM = 1,852 km
- 1 NM = 6080 ft
- 1 m = 3,28 ft
- 1 statute mile = 1,609 km
Weight
- 1 kg = 2.205 pounds
Volume
- 1 US-Gal = 3.785 L
- 1 Imp-Gal = 4.546 L
Pressure
- Standard Pressure = 1013.25 hPa
- 1hPa = 27ft
Sphere
- Big circle: 1° = 60NM
Speed
- ICE-T
- Indicated Airspeed
- ↓ correct for instrument error
- Calibrated Airspeed
- ↓ correct for compressibility (negligible below 200kts and 10.000ft )
- Equivalent Airspeed
- ↓ correct for altitude and non-ISA temperature (~ +2% for each 1000ft
- True Airspeed
- Indicated Airspeed
Altitude
- Indicated Altitude (set to QNH)
- Pressure Altitude (set to 1013.25)
- Density Altitude (corrected for temperature)
- True Altitude
Q-Codes
| Code | Meaning |
|---|---|
| QNH | Atmospheric pressure at mean sea level (may be either a local, measured pressure or a regional forecast pressure (RPS)). When set on the altimeter it reads altitude. |
| QFE | Atmospheric pressure measured at the airport station. When set, the altimeter reads the height above the station. Not in common use. |
| QNE | Indicated altitude at the landing runway threshold when 1013.25 hPa or 29.92 inHg (atmospheric pressure at sea level in the International Standard Atmosphere) is set as altimeter setting. |
| (QFF) | Atmospheric pressure at a place, reduced to MSL using the actual temperature at the time of observation as the mean temperature. |
| Code | Meaning |
|---|---|
| QDM | Magnetic bearing to a station (DM...direction magnetic) |
| QDR | Magnetic bearing from a station (R...reciprocal) |
| QUJ | True bearing/track to a station |
| QTE | True bearing/track from a station |
| QFU | Magnetic bearing of the runway in use |
| QDL | Series of bearings taken at regular intervals |
| QGE | Distance |
| QTF | Position in relation to a point of reference or in latitude and longitude |
Angles
GAGA HHAG SCTA