Flight computer CR3 for heading and groundspeed
September 26, 2024
https://youtu.be/vDNed0RtKsg?si=ptqWLjadc-CUR0w0 Read More
[NAV] Great circle, Small circle, Rhumb line
August 25, 2024
Great circle select two points on a sphere, and the largest possible circle that can be drawn around the sphere Great circle track feature shortest distance between any two points on the surface of a sphere constantly changing track direction as a result of convergency Small circle select two points on a sphere, and draw Read More
[NAV] Latitude, Longitude, Prime meridian, Anti-meridian – position reference system
August 25, 2024
Latitude a position on the line of latitude Longitude a position on the line of longitude Line of latitude imaginary lines along the earth parallel to each other (but perpendicular to lines of longitude) indicate your angular position north or south of equator (on equator is 0 degree) Line of longitude imaginary lines from Read More
[NAV] The earth radius and circumference 地球半徑及地球圓周
August 25, 2024
Equatorial radius (major semi axis) of the earth is 6378 km while Polar radius (minor semi axis) of the earth is 6357, and so Equatorial circumference is around 2 x 3.14 x 6378 = 40054 – i.e approx 40,000 km (21,600 NM) Geographic pole-to-pole circumference is around 2 x 3.14 x 6357 = 39922 (21,556 Read More
口訣勿背錯: True Direction – Magnetic Direction – Compress Direction
March 30, 2024
Magnetic Direction 東減西加 轉 Compress Magnetic Direction 東加西減 轉 True Tommy = M+E C = M-E (我無左E就係死屍) Read More
What’s Triangle of veolocities?
March 29, 2024
Reference : HKU Space materials Ans: it is using a vector concept to explain the relationship between HDG/TAS, TMG/GS and WV Since the wind ‘blows’ the aircraft from its air position (expected final position) to its ground position (actual final position), it is acceptable to assume that if the air position and the ground Read More
What’s fix ? Pinpoint ?
March 29, 2024
Refer HKU SPACE materials Ans: Fix – the geographical position of an aircraft at a specific time determined by either visual reference to the ground or by navigation aids Pinpoint – fix determined by direct observation of the ground. Read More
Air Navigation
March 29, 2024
What is the 5 basic elements in air navigation? Ans: Direction Distance Speed Wind Time Air navigation can be basically divided into 2 part: Flight Planning and Flight Monitoring. It is talking about foresee and actual! Flight planning First of all, we need to set a route (where are we going to fly to) Read More
How can we know the variation?
March 29, 2024
Reference: HKU Space material Ans: get the variation from chart Isogonal(s) are the lines on map showing equal magnetic variation. Both FAA and Airservices Australia have issued “aeronautical chart user guide”. Variation in Australia Chart Variation in USA Chart What’s Variation, Deviation? Read More
What’s Variation, Deviation?
March 29, 2024
Reference : HKU Space Material True poles are the location of the geographic poles. Rightly, the true north pole is not at same location of magnetic north pole. Variation : angular difference between true direction and magnetic direction Deviation : angular difference different between magnetic direction and compass direction How can we know the variation? Read More
Quick fact: Date, Time, Direction in aviation industry
March 29, 2024
Reference : HKU Space Material Date, Time are taking reference from coordinated universal time (UTC), also known as “Zulu” Time Date: three pair of digit – year-month-day (e.g 010131 -> 2001 Jan 31) TIme: four-figure group – HH:MM (e.g 2300Z, 2359Z, 0000Z) Direction: three way to describe direction – True direction, Magnetic direction, Compass direction; Read More
What’s Heading? What’s Track?
March 29, 2024
Reference: HKUSPACE Course Heading? Ans: Heading (HDG) refers to the direction in which the aircraft is pointing. Track? (= Track Required, TR) Ans: Direction over the ground in which the aircraft is required to travel Read More :- 10 *** Important: Drift is NOT the Track Error. Drift is the difference between heading Read More
What’s UTC?
March 29, 2024
Reference : HKUSPACE Course Material UTC – coordinated universal time – the time is based on the prime (or 0 degree meridian of longitude) through Greenwich near London. Read More
一次搞清楚 Q-code and Altitudes (Altimetry)
March 4, 2024
Ref Ace the technical pilot interview 2/E QFE : refer to the height (vertical distance) above ground level (with no relation to mean sea level) QNH : Altitude – refer to the height (vertical distance) above mean sea level QNE : Pressure Height = Flight level – refer to the height (vertical distance) above 1013 Read More
