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A320-Simulation of Azore glider emergency
In 2001, an Air Transat Airbus 330 had a complete engine failure due to a leak in the fuel line. At that time, the plane was about 120 km away from an island in the Azores and fortunately had such a high cruising altitude that it could glide to a military airfield without thrust. However, the problem was the heights
division during the final approach, because the pilots have flown too high and too fast. We flown this emergency in an A320 flight simulator from the Aachen University of Applied Sciences and were able to show that Safe2Land would have given the pilots the best possible support both during the approach and the subsequent landing.
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Safe2Land App in action
Safe2Land was implemented for Android and in the video above you can see how it works in case of an engine failure emergency. My means of the Smart Flight Director (SFD) even less experienced pilots will manage to safely glide with the airplane to an airfield that is within reach by the excess altitude over ground.
The SFD is very easy to use. By moving the stick or yoke the objective is to chase the disc and keep it centered within the "hole" of the primary flight. In this case, the airspeed corresponds to the best glide speed of the aircraft and the route's track error is zero. Thus the aircraft glides along the route optimized by Safe2Land and it will arrive in approx. 20ft over the threshold of the selected runway.
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Safe2Land controls a Garmin1000-Autopilot in X-Plane 11
Safe2Land can directly control an Autopilot to fly an emergency route in case of engine-out. This is demonstrated in an X-Plane 11 setup. We program the required heading and and sink rate by means of commands via UDP to the G1000 within a C172 airplane in the flight simulator. In the video the simulated engine-off emergency is south of EDLA and the Safe2Land App selected a route to the threshold of runway 23. In the Video you can see that this route can be easily flew by means of the autopilot connected to the G1000. Of course, we could also control an autopilot in a real airplane and in the near future we will demonstrate this by means of a research aircraft. Stay tuned!
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Real Emergency Landing Exercise with the brand-new Safe2Land with SFD
Another real emergency landing exercise with the Katana DV20. Again, this video shows a simulated emergency landing at Arnsberg-Menden Airport (EDLA or FAM). The pilot approached the airfield inbound to southeast and set the engine to idle at about 1600 ft above the center of the runway. Then he flew at the speed of best gliding (65-70 kn) guided by the integrated Smart Flight Director (SFD) of the Safe2Land App. Note that by means of SFD the pilot doesn't need to know the best gliding speed. Even laywoman oder -men are able to fly the airplane in case of an engine-out or pilot's incapacitation emergency. Although there was significant crosswind from the south, an unexperienced copilot easily managed control the airplay to the threshold of runway 23 at the perfect height for a landing flare. There is also a wind estimator and the Safe2Land's App glide path was permanently adapted to the updated wind situation. Besides the SFD there is also a flight path trend line over a moving satellite image. Note, that in case of an emergency, the pilot can select between a published runway of the EDLA airport and various emergency landing fields that are stored in a precomputed database. In an upcoming video we show that Safe2Land can also advise an Autopilot to fly the emergency route to the threshold.
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Engine-out in IMC with lack of ILS or during night flights
Emergency landing in blind flight. In this video you can see an emergency landing approach at Instrument Flying Conditions (IMC). Due to the high speed of the glide path calculation by our moving target method, it is possible to make an emergency landing even with complete loss of visibility and lack of any conventional instrument based approaches (FPV, ILS). This is demonstrated here on the flight simulator X-Plane 11 for an emergency landing on the airfield Santa Cilia De Jaca.
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Real Emergency Landing Exercise with an older ELA-Version
Real emergency landing exercise with a Katana DV20. This video shows a simulated emergency landing at Arnsberg-Menden Airport (EDLA or FAM). The pilot approached the airfield inbound to southeast and set the engine to idle at about 1600 ft above the center of the runway. Then he flew at the speed of best gliding (65-70 kn) along the route prescribed by ELA and reached the runway threshold at the right height for landing. The ELA glide path was calculated for the current wind situation (from 190 to 7kn) and is displayed in the navigation software AirNavigationPro.
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Fixed wing drone autopilot landing
In the video you see our latest achievements regarding autonomous engine-out emergency landing. The drone has an autopilot that is controlled by our moving target algorithm to safely guide the drone to an emergency landing field. In contrast to trochoid based approaches it is one million times faster and can run on an embedded microprocessor. The integration of the moving target algorithm into an autopilot-controlled fixed wing model airplane was realized as part of a master thesis by Nikolai Voget. We work towards to integrate it into a real airplane as well.
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Flare Assistant
The Flare Assistant (FA) helps pilots to make a smooth touchdown. Pilots are guided by a so called smart flight director SFD that indicates how they have to move the elevator. If the red disc is within the circle no action is required because the aircraft is on track for a perfect landing. Also audio signals announce the flare altitude and loud beeps require pulling the elevator. If there are no audio hints the aircraft is on track.
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Thermals Assistant
The Thermals Assistant (TA) visualizes the thermal situation around the sailplane. It leaves a trace of red or blue dots along the flight path. The red dots indicate upwind and should be circled it order to gain height. The small line in heading direction helps the pilots to accomplish this task.
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Circling Autopilot
On the following video you can see our "Circling Autopilot" in action. We developed that Autopilot in connection with a graphical tool called "Variomap" that illustrates the thermal situation around a sailplane and helps the pilot to get more lift out of the thermals. By means of the Circling Autopilot the human pilot has just to guide the airplane close to the thermal and then the Autopilot takes care for centering the thermal.