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A blog for aeroplanes and all about the flying experience,also any news updates from margate airport.
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About Me
- k.j.carter
- Im a pilot at zero four flight school in margate,currently studying for my commercial pilots licence. I really love muscle cars and hope to oneday own a 1967 mustang fastback,its also my dream to get into an international airline as the pilot in command.
23/08/2011
22/08/2011
The Ipad is the pilots best friend
For Delta, the iPads act as a lighter, more efficient and more up-to-date version of the little leather trolley case pilots usually have to haul around with pounds of flight plans, weather charts, and other paperwork they need to fly airliners. It's part of a bigger digital overhaul for Delta, which has integrated Gogo's in-flight Wi-Fi to its domestic fleet, enabling pilots to get up-to-date information and even company emails as they fly... and Delta's also experimented with loaning iPads as entertainment units to customers.
All Delta's pilot's tablets have the same core software, which contain charting apps, company flight manuals in PDF format, a custom meteorology app from Delta which includes the company's own real-time radar data, an app for writing notes, and crew rest calculators for longer flights. The company can also push real-time security updates to all its iPad crew in-flight, and even direct them into new re-routes as they fly.
But while Delta is going down the custom app route, the huge suite of apps for pilots in the App Store proves that it's a massive industry. ForeFlight Mobile HD is a good example, claiming to be the "perfect pilot-companion: in-flight or on the ground," it's typical of the more full-featured apps. In addition to offering flight planning that's infinitely easier than is usually required--it integrates routing information and weather into a single display that you simply have to touch ("drag your route line around weather")--it also incorporates downloadable packages that report airport procedures and maps, it also lets you check fuel prices, airspace restrictions, and weather forcasts are presented as interactive maps before you fly. Because it's a real-time service, it's actually a subscription app--and there's a more expensive Pro edition that actually tracks you in-flight, keeping "tabs on groundspeed, tract and geometric altitude" all with the "standard pinch to zoom and panning gestures."
Back in July 2010, Plane And Pilot Mag profiled 20 apps that were useful for pilots, ranging from the free and simple AeroWeather to Jeppesen, a professional grade app that details the approach procedures for airports around the globe, and one that Delta is using as part of its trial.
Everything from pre-flight planning to in-fight emergency weather updates can be delivered via the iPad--and if there's an emergency, the manuals are all electronic and searchable, potentially saving vaulable time instead of having pilots flick through a paper copy.
Proof positive that the iPad's innovation is also changing the entire flight industry comes from British Airways: It's trialing them as dynamic, real-time data tools for senior flight crew--helping them move passengers to connecting flights and replacing the paper-based manifests that have been law since commercial flying began.
Bonus: American Airlines, during its iPad trial program, suggested that by ditching the heavy paper-based pilot flight bags for iPads, they'd save enough weight to reduce their annual fuel bill by $1.2 million. Which also means less polluting fuel is burned.
16/08/2011
VOR tracking beacons
VORs are assigned radio channels between 108.0 MHz (megahertz) and 117.95 MHz (with 50 kHz spacing); this is in the VHF (very high frequency) range. The first 4 MHz is shared with the ILS band (See Instrument landing system). To leave channels for ILS, in the range 108.0 to 111.95MHz, the 100 kHz digit is always even, so 108.00, 108.05, 108.20, and so on are VOR frequencies but 108.10, 108.15, 108.30, and so on, are reserved for ILS.
The VOR encodes azimuth (direction from the station) as the phase relationship of a reference and a variable signal. The omni-directional signal contains a modulated continuous wave (MCW) 7 wpm Morse code station identifier, and usually contains an amplitude modulated (AM) voice channel. The conventional 30 Hz reference signal is on a 9960 Hz frequency modulated (FM) subcarrier. The variable amplitude modulated (AM) signal is conventionally derived from the lighthouse-like rotation of a directional antenna array 30 times per second. Although older antennas were mechanically rotated, current installations scan electronically to achieve an equivalent result with no moving parts. When the signal is received in the aircraft, the two 30 Hz signals are detected and then compared to determine the phase angle between them. The phase angle by which the AM signal lags the FM subcarrier signal is equal to the direction from the station to the aircraft, in degrees from local magnetic north, and is called the "radial."
This information is then fed to one of four common types of indicators:
VORTACs and VOR-DMEs use a standardized scheme of VOR frequency to TACAN/DME channel pairing so that a specific VOR frequency is always paired with a specific co-located TACAN or DME channel. On civilian equipment, the VHF frequency is tuned and the appropriate TACAN/DME channel is automatically selected.
The VOR encodes azimuth (direction from the station) as the phase relationship of a reference and a variable signal. The omni-directional signal contains a modulated continuous wave (MCW) 7 wpm Morse code station identifier, and usually contains an amplitude modulated (AM) voice channel. The conventional 30 Hz reference signal is on a 9960 Hz frequency modulated (FM) subcarrier. The variable amplitude modulated (AM) signal is conventionally derived from the lighthouse-like rotation of a directional antenna array 30 times per second. Although older antennas were mechanically rotated, current installations scan electronically to achieve an equivalent result with no moving parts. When the signal is received in the aircraft, the two 30 Hz signals are detected and then compared to determine the phase angle between them. The phase angle by which the AM signal lags the FM subcarrier signal is equal to the direction from the station to the aircraft, in degrees from local magnetic north, and is called the "radial."
This information is then fed to one of four common types of indicators:
- An Omni-Bearing Indicator (OBI) is the typical light-airplane VOR indicator[3] and is shown in the accompanying illustration. It consists of a knob to rotate an "Omni Bearing Selector" (OBS), and the OBS scale around the outside of the instrument, used to set the desired course. A "course deviation indicator" (CDI) is centered when the aircraft is on the selected course, or gives left/right steering commands to return to the course. An "ambiguity" (TO-FROM) indicator shows whether following the selected course would take the aircraft to, or away from the station.
- A Horizontal Situation Indicator (HSI) is considerably more expensive and complex than a standard VOR indicator, but combines heading information with the navigation display in a much more user-friendly format, approximating a simplified moving map.
- A Radio Magnetic Indicator (RMI), developed previous to the HSI, features a course arrow superimposed on a rotating card which shows the aircraft's current heading at the top of the dial. The "tail" of the course arrow points at the current radial from the station, and the "head" of the arrow points at the reciprocal (180 degrees different) course to the station.
- An Area Navigation (RNAV) system is an onboard computer, with display, and up-to-date navigation database. At least two VOR stations, or one VOR/DME station is required, for the computer to plot aircraft position on a moving map, or display course deviation relative to a waypoint (virtual VOR station).
VORTACs and VOR-DMEs use a standardized scheme of VOR frequency to TACAN/DME channel pairing so that a specific VOR frequency is always paired with a specific co-located TACAN or DME channel. On civilian equipment, the VHF frequency is tuned and the appropriate TACAN/DME channel is automatically selected.
Seaweed as jet fuel
For airlines, the solution to soaring fuel prices might be as simple as seaweed.
Virgin Atlantic, Air New Zealand, and Boeing are working together to create the world’s first green aviation fuel made from pond-grown algae.
Higher fuel prices and growing concerns over environmental damage caused by conventional aviation fuel are driving plans to produce biofuels based on algae.
Virgin’s Sir Richard Branson says that the concept has “huge potential,” adding, that it’s a source of energy that “doesn’t lead to deforestation or take away land or water from the cultivation of essential food crops.”
Why algae? Scientists say it can grow incredibly fast – doubling in size in a few hours – and it does not need fresh water or good quality land.
Thick green algae produces at least 15 times more oil per hectare than alternatives such as palm oil, soya or jatropha, a nut-bearing shrub cultivated in several countries as a biofuel.
Separately, Continental Airlines, Boeing, and GE Aviation is hoping to flight test a type of biofuel in 2009. Green Car Congress reported in March that green fuels are ready for takeoff.
In February 2008, Virgin Atlantic, Boeing, GE Aviation, and Imperium Renewables successfully flight-tested a Boeing 747 equipped with GE engines using a 20 percent blend of a biojet fuel—a transesterified bio-kerosene — derived from babassu and coconut oil in one engine.
This sounds good. But with fuel prices likely to fall now that Saudi Arabia has decided to increase oil production, will these alternative fuel initiatives endure?
Only time will tell.
Virgin Atlantic, Air New Zealand, and Boeing are working together to create the world’s first green aviation fuel made from pond-grown algae.
Higher fuel prices and growing concerns over environmental damage caused by conventional aviation fuel are driving plans to produce biofuels based on algae.
Virgin’s Sir Richard Branson says that the concept has “huge potential,” adding, that it’s a source of energy that “doesn’t lead to deforestation or take away land or water from the cultivation of essential food crops.”
Why algae? Scientists say it can grow incredibly fast – doubling in size in a few hours – and it does not need fresh water or good quality land.
Thick green algae produces at least 15 times more oil per hectare than alternatives such as palm oil, soya or jatropha, a nut-bearing shrub cultivated in several countries as a biofuel.
Separately, Continental Airlines, Boeing, and GE Aviation is hoping to flight test a type of biofuel in 2009. Green Car Congress reported in March that green fuels are ready for takeoff.
The Continental Airlines biofuel flight will use a Boeing Next-Generation 737 equipped with CFM International CFM56-7B engines, using a blend of between 20%-50% of a second-generation biofuel in one engine.Although they have yet to select the type of biofuel to use, the partners say that it will be a second-generation fuel that does not impact food production. It will also be able to be produced in sufficient quantities to support a pre-flight test schedule that includes laboratory and ground-based jet engine performance testing to ensure compliance with stringent aviation fuel performance and safety requirements.
In February 2008, Virgin Atlantic, Boeing, GE Aviation, and Imperium Renewables successfully flight-tested a Boeing 747 equipped with GE engines using a 20 percent blend of a biojet fuel—a transesterified bio-kerosene — derived from babassu and coconut oil in one engine.
This sounds good. But with fuel prices likely to fall now that Saudi Arabia has decided to increase oil production, will these alternative fuel initiatives endure?
Only time will tell.
Two missing planes
Five helicopters, including an SA Air Force Oryx, which was dispatched from the Hoedspruit Airforce Base, lifted off at about 40 minute intervals throughout the afternoon, searching in vain in mountainous terrain.
By 5pm yesterday, the search was called off.
"They are currently rerouting the helicopters to the centre and there has been no indication of a crash site yet,"Greater Mopani District Municipality spokesperson Mashadi Mathosa said.
At about 4.30pm, the Oryx left with a team of four search and rescue members on board, taking another stab at finding the two Albatros aeroplanes.
On its return, rescue team members, of whom many had to sleep in the veld overnight on Sunday, were fed dinner and coffee.
They were debriefed and had the night to rest, before regrouping to start the search at 6.30am.
Yesterday's search and rescue efforts continued in an atmosphere of tense efficiency, as every bit of information coming in to the centre was plotted on a map, and coordinates of any possible sighting sent to a helicopter.
The helicopter then swooped down to pick up a team of four rescuers, and headed out to the search areas, where the teams were dropped to search on foot.
The search included more than 100 members from various organisations such as the Limpopo Emergency Services, the SAAF, police, the Off Road Rescue and Mountain Rescue units and private pilots. It stretched over an area of between 180km² and 210km² in mountainous and vegetated terrain between Maake and George's Valley in the Wolkberge.
Low cloud cover and heavy fog limited visibility to about 10m, and caused the helicopters to be ineffective as search platforms, and could only be used to ferry search teams.
Aviation authorities lost contact with the two Albatros aircraft, confirmed to be carrying 13 passengers, at around 3pm on Sunday.
The planes were returning to Rand Airport from an airshow organised at the Tarentaal airstrip, about 15km outside Tzaneen.
By 5pm yesterday, the search was called off.
"They are currently rerouting the helicopters to the centre and there has been no indication of a crash site yet,"Greater Mopani District Municipality spokesperson Mashadi Mathosa said.
At about 4.30pm, the Oryx left with a team of four search and rescue members on board, taking another stab at finding the two Albatros aeroplanes.
On its return, rescue team members, of whom many had to sleep in the veld overnight on Sunday, were fed dinner and coffee.
They were debriefed and had the night to rest, before regrouping to start the search at 6.30am.
Yesterday's search and rescue efforts continued in an atmosphere of tense efficiency, as every bit of information coming in to the centre was plotted on a map, and coordinates of any possible sighting sent to a helicopter.
The helicopter then swooped down to pick up a team of four rescuers, and headed out to the search areas, where the teams were dropped to search on foot.
The search included more than 100 members from various organisations such as the Limpopo Emergency Services, the SAAF, police, the Off Road Rescue and Mountain Rescue units and private pilots. It stretched over an area of between 180km² and 210km² in mountainous and vegetated terrain between Maake and George's Valley in the Wolkberge.
Low cloud cover and heavy fog limited visibility to about 10m, and caused the helicopters to be ineffective as search platforms, and could only be used to ferry search teams.
Aviation authorities lost contact with the two Albatros aircraft, confirmed to be carrying 13 passengers, at around 3pm on Sunday.
The planes were returning to Rand Airport from an airshow organised at the Tarentaal airstrip, about 15km outside Tzaneen.
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