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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* 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 !! Sample use | |||
|- | |||
| 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. || Request Leeds QNH | |||
|- | |||
| QFE || Atmospheric pressure measured at the airport station. <br> When set, the altimeter reads the height above the station. Not in common use. || Runway in use 22 Left, QFE 990 millibars | |||
|- | |||
| 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 !! Sample use | |||
|- | |||
| QDM || Magnetic bearing ''to'' a station || (callsign) request QDM (callsign)<ref name="caa.co.uk">[http://www.caa.co.uk/docs/33/CAP%20413%20Radiotelephony%20Manual%2021%202%20complete.pdf CAP 413 Radiotelephony Manual 21 2 complete.pdf] {{webarchive |url=https://web.archive.org/web/20140508223114/http://www.caa.co.uk/docs/33/CAP%20413%20Radiotelephony%20Manual%2021%202%20complete.pdf |date=May 8, 2014 }}, p.12</ref> | |||
|- | |||
| QDL || Series of bearings taken at regular intervals || | |||
|- | |||
| QDR || Magnetic bearing ''from'' a station || (callsign) request QDR (callsign)<ref name="caa.co.uk"/> | |||
|- | |||
| QFU || Magnetic bearing of the runway in use || Runway 22 in use, QFU 220<ref>[http://acronyms.thefreedictionary.com/QFU QFU on The Free Dictionary]</ref> | |||
|- | |||
| QGE || Distance || | |||
|- | |||
| QGH || Controlled Descent through Clouds ([[Royal Air Force]] use) || | |||
|- | |||
| QTE || True bearing/track ''from'' a station || (callsign) request QTE (callsign)<ref name="caa.co.uk"/> | |||
|- | |||
| QTF || Position in relation to a point of reference or in [[latitude]] and [[longitude]] || | |||
|- | |||
| QUJ || True bearing/track ''to'' a station || | |||
|} | |||
== Angles == | == Angles == | ||
Revision as of 09:34, 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 | Sample use |
|---|---|---|
| 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. | Request Leeds QNH |
| QFE | Atmospheric pressure measured at the airport station. When set, the altimeter reads the height above the station. Not in common use. |
Runway in use 22 Left, QFE 990 millibars |
| 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 | Sample use |
|---|---|---|
| QDM | Magnetic bearing to a station | (callsign) request QDM (callsign)<ref name="caa.co.uk">CAP 413 Radiotelephony Manual 21 2 complete.pdf Template:Webarchive, p.12</ref> |
| QDL | Series of bearings taken at regular intervals | |
| QDR | Magnetic bearing from a station | (callsign) request QDR (callsign)<ref name="caa.co.uk"/> |
| QFU | Magnetic bearing of the runway in use | Runway 22 in use, QFU 220<ref>QFU on The Free Dictionary</ref> |
| QGE | Distance | |
| QGH | Controlled Descent through Clouds (Royal Air Force use) | |
| QTE | True bearing/track from a station | (callsign) request QTE (callsign)<ref name="caa.co.uk"/> |
| QTF | Position in relation to a point of reference or in latitude and longitude | |
| QUJ | True bearing/track to a station |
Angles
GAGA HHAG SCTA