Projects:EASA PPL/Units & General: Difference between revisions

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* ICE-T
* ICE-T
** Indicated Airspeed
** '''I'''ndicated Airspeed
*** ↓ correct for instrument error
*** ↓ correct for instrument error
** Calibrated Airspeed
** '''C'''alibrated Airspeed
*** ↓ correct for compressibility (negligible below 200kts and 10.000ft )
*** ↓ correct for compressibility (negligible below 200kts and 10.000ft )
** Equivalent Airspeed
** '''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
** True Airspeed
** '''T'''rue Airspeed


== Altitude ==
== Altitude ==
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{| class="wikitable" summary="Most common Q codes used in aviation for altimeter settings, including meaning and sample use"
{| class="wikitable" summary="Most common Q codes used in aviation for altimeter settings, including meaning and sample use"
|+ Altimeter settings
|+ Altimeter settings
! Code !! Meaning !! Sample use
! 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. || Request Leeds QNH
| '''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. || Runway in use 22 Left, QFE 990 millibars
| '''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. ||
| 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. ||
| (QFF) || Atmospheric pressure at a place, reduced to MSL using the actual temperature at the time of observation as the mean temperature.  


|}
|}
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{| class="wikitable" summary="Most common Q codes used in aviation for radio navigation, including meaning and sample use"
{| class="wikitable" summary="Most common Q codes used in aviation for radio navigation, including meaning and sample use"
|+ Radio Navigation
|+ Radio Navigation
! Code !! Meaning !! Sample use
! Code !! Meaning  
|-
|-
| 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>
| '''QDM'''|| Magnetic bearing ''to'' a station (DM...direction magnetic)
|-
|-
| QDL || Series of bearings taken at regular intervals ||
| '''QDR''' || Magnetic bearing ''from'' a station (R...reciprocal)
|-
|-
| QDR || Magnetic bearing ''from'' a station || (callsign) request QDR (callsign)<ref name="caa.co.uk"/>
| QUJ || True bearing/track ''to'' a station  
|-
|-
| 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>
| QTE || True bearing/track ''from'' a station
|-
|-
| QGE || Distance ||
| QFU || Magnetic bearing of the runway in use
|-
|-
| QGH || Controlled Descent through Clouds ([[Royal Air Force]] use) ||
| QDL || Series of bearings taken at regular intervals
|-
|-
| QTE || True bearing/track ''from'' a station || (callsign) request QTE (callsign)<ref name="caa.co.uk"/>
| QGE || Distance
|-
|-
| QTF || Position in relation to a point of reference or in [[latitude]] and [[longitude]] ||
| QTF || Position in relation to a point of reference or in latitude and longitude  
|-
| QUJ || True bearing/track ''to'' a station ||
|}
|}


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

Altitude

  • Indicated Altitude (set to QNH)
  • Pressure Altitude (set to 1013.25)
  • Density Altitude (corrected for temperature)
  • True Altitude

Q-Codes

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.
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.
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

GAGA
HHAG
SCTA


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