Ja, in der Luftfahrt wird grundsätzlich j = 1,5 verlangt. Es gibt natürlich auch Einzelparagrafen die höhere Sicherheiten verlangen, aber 1,5 ist der Grundregel.
@dr.wilfriedhitzler1885Ай бұрын
@@AntaresFilm Danke, habe selbst Verkehrszulassung betrieben, da war j auch 1,5. Ich wollt’s bloß wissen weil ich schon lang was ganz anderes mache.
@Yamdres212 ай бұрын
I love it
@user-lg3sk5fq8g2 ай бұрын
😂😂 die haben wirklich ein Flügel zerstört für nichts 😡🤷♂️
@IvanGavr8 ай бұрын
Super.
@phe92388 ай бұрын
Hammer Technik
@Marty-uv9cd8 ай бұрын
Was demonstriert dieser Demoflug? Dass man die Antriebseinheit im Flug in und außer Betrieb nehmen kann und dass die Lüftung ein akustisches Signal liefert, wenn sie offen ist?
@AntaresFilm8 ай бұрын
Wenn wir die Zeit finden, werden wir versuchen, einen neuen Beitrag mit detaillierteren operativen Visualisierungen zu erstellen. Im Moment können die folgenden Aspekte beobachtet werden: -If we can find the time, we will try to create a new edit with better detailed operational visuals. For now, the following aspects can be observed: kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=tk3hjjBAm8hqefyS&t=36 Rollen mit elektrischem Antrieb. Lenkung über lenkbares Spornrad. -Taxiing under electric power. Steering via steerable tailwheel. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=s30D0DGR0Ojaomg0&t=70 Elektrischer Eigenstart mit hoher Beschleunigung und kurzer Startstrecke. -Electric self launch with high acceleration and short takeoff run. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=e74FVybHUgm8Vyyx&t=85 Hohe Steigrate durch leistungsstarken Elektromotor und steigungsoptimierten Propeller. -High rate of climb due to powerful electric motor and climb optimized propeller. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=wsREV1env9OovH8X&t=113 Elektrohydraulisches Einziehfahrwerk mit Einzelschalterbedienung und Software-Sicherheitsalgorithmen. -Electrohydraulic retracting landing gear with single switch operation and software safety algorithms. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=I8fjaVh5DWc5jfwT&t=324 Wolkenlandschaft von oben, ein ungewöhnlicher Anblick aus einem Segelflugzeug. -Cloudscape from albove, an unusual sight from a glider. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=oKHCYQlgIxDWHxEd&t=400 Motorbremsung, Zentrierung und Einfahren. Keine Vorkühlung des Motors erforderlich. Sehr geringer Höhenverlust. -Motor braking, centering and retraction. No motor pre-cooling required. Very little loss in altitude. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=gdhMezct-sWQg228&t=425 Motorausfahren und Leistungswahl mittels Einhebelbedienung Vollständiges Ausfahren des Hydraulikmotors innerhalb von 8 Sekunden, 10 Sekunden bis zur Leistung. Geschätzter Höhenverlust von 2 m für die Inbetriebnahme des Antriebs. -Motor extension and power selection by means of single lever control Complete hydraulic motor extension within 8 seconds, 10 seconds to power. estimated 2 m altitude loss for propulsion activation. Mehrfache Wiederholungen mit schöner Wolkenlandschaft im Hintergrund, um anständiges Filmmaterial für Präsentationen und ähnliches zu bekommen. Einige schöne Segelflugszenen ohne ernsthafte Versuche des Thermikfliegens. -Multiple repeats with beautiful cloudscape in the background in order to get decent footage for presentations and similar. Some nice gliding scenes with no serious attempts at thermalling. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=EcRGEXOUzIhKC2XX&t=692 Hydraulischer Ausfahrvorgang des Fahrwerks. Es ist zu beachten, dass zum Ausfahren keine (elektrische) Pumpenleistung erforderlich ist. Das Fahrwerk ist ein federbelasteter Mechanismus, der zum Ausfahren lediglich das Öffnen eines Ventils erfordert. -Hydraulic landing gear extension, Note that no (electric) pump power is needed for extension. The landing gear is a spring loaded mechanism which only requires the opening of a valve in order to extend. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=YEfbp4F7zUaJ2np5&t=735 Landung. Eine "lange Landung" mit Verlassen der Startbahn über Rollweg Delta wird beantragt und genehmigt. -Landing. A "long landing" with exit over Taxiway delta is requested and approved. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=nPs148m9VmJqZWzX&t=838 Kontrolliertes Verlassen der Startbahn mit Hilfe des lenkbaren Spornrads. -Controlled exit from runway by means of steerable tailwheel. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=CI1NP3iq2cvIR-mk&t=847 Ausfahren des Motors für das Rollen zurück zum Werk. Es ist zu beachten, dass die Antares mit ein abgelegten Flügelspitze gerollt wird. Je nach Bedingungen kann das Hauptrad nahe am Rand der Rollbahn gehalten werden. -Motor extension for taxiing back to the factory. Note that the Antares is taxied with one wingtip down. Depending on conditions, the main wheel may be kept close to the edge of the taxiway. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=xhpVmQ8_IFulOarm&t=862 Für zusätzlichen Komfort kann die Antares mit geöffneter Haube gerollt werden. -For added comfort, the Antares can be taxied with the canopy open.
@pilotmiami19 ай бұрын
Bravo perfect
@jocave1282 Жыл бұрын
Ich erinnere mich an PKW - schleppversuche mit einer "Fregatte " und Ka6. Ging, aber für ne Platzrunde hat es nicht gereicht:) Es war in den 60igern. Ha!
@weaponeer2 жыл бұрын
if I ever win the lottery I'll buy an electric glider for video production to promote gliders in the USA. I was working towards my Glider Lic. back when I was a teen (I'm 56, so it was a LONG time ago lol), but got involved in videography, and now I'm a retired Disabled Army Veteran with time on my hands but no money roflol
@SoaringExperience2 жыл бұрын
Wie hoch sind die Kräfte in Newton, die oben dran ziehen? Als das was der Kran oben zieht.
@helmutpohl2762 Жыл бұрын
... für mich bitte in Kilogramm, - weder der arme Newton noch der arme Watt wären mit ihrem Namens - MISSBRAUCH einverstanden ....mir reicht schon der Mist von km/h und mph und kt ......genauso wie Links / Rechtsverkhr, verschiedene Steckdosen und Stromsysteme ... und das in unserer Zeit !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
@SoaringExperience Жыл бұрын
@@helmutpohl2762 Mag sein. Newton ist aber die SI-Einheit für die Kraft und das hilft mir mehr. Und Kilogramm "ziehen" nur mit Hilfe der Erdbeschleunigung daran. Also Newton passt schon gut.
@PureGlide3 жыл бұрын
Hi any chance I can use a clip from your video in a video about different launch methods for gliders? Full credit and link to your video would be included. Can you email me [email protected] to confirm if that is OK or not? Thanks in advance! Tim
@nash04273 жыл бұрын
Terrible and loud music
@AntaresFilm3 жыл бұрын
Music taste can be discussed. We would have preferred no music, but the GoPro had a problem with audio recording. If you can find us some good licence free music, then we will consider it next time we are forced to add music. With regard to loudness, you should be able to adjust this on your device. If it is a PC running Windows, then look for the little loudspeaker icon, bottom right.
@nash04273 жыл бұрын
@@AntaresFilm what I intend saying is that the sound should ideally be of the glider, the wind, etc as if the viewer is with you on the flight. This could be superimposed with extremely light backgroud music, bach, vivaldi, Beethoven etc.... on the other hand I've got a pertinent question, whats the smallest airstrip needed for a safe autonomous takeoff with water (max auw), whats the ground roll for electric autonomous take off on grass?
@TechnoComposites3 жыл бұрын
Toller Test! Ist halt immer wieder interessant, wie hoch belastbar Material aus Faserverbundwerkstoff in anderen Sparten auch ist. 👍Composites rocks!
@lucywucyyy3 жыл бұрын
stronk
@rickdc34 жыл бұрын
Is there a parachute on the end of the line to slow it down after release, or do you just let it fall onto the runway? How fast is the car going?
@AntaresFilm4 жыл бұрын
When we tested Autotowing for the Antares 18T, we used a parachute that used to serve as a brake chute extractor for the MIG 21. With the chute in place, we hade the problem of the chute opening whenever the car stopped accelerating during gear changes. With the Antares 23T testing, there was no parachute installed. This meant that the rope would fall a bit faster, but it removed the problem of premature chute deployment. Seeing that the installation we used had no way of pulling in the tow rope as it fell, there was no great advantage to a parachute. Also; with a parachute installed, any crosswind would make the tow rope drift further to the side of the runway. With regards to car speed: The car speed is adjusted over the course of the tow so that the glider flies at optimal IAS the whole time. The speed of the car will thus very much depend on the wind conditions at altitude. While the driver must force him(or her)self to accelerate briskly, the speeds involved are rather unspectacular.
@dvr13374 жыл бұрын
that test is stupid. do it back and forth really fast like in a real flight+ add the kerosine into them and u will see what happens.
@AntaresFilm4 жыл бұрын
This test is required by aviation authorities in order to obtain certification. What is being tested is the maximum bending load that the wing will withstand before breaking. This loadcase can occur (for example) when the pilot flies into windshear while pulling maximum g in order to recover from a dive. Moving the wings back and forth really fast is a different problem, and it is called "flutter". Flutter can reduce a carbon fiber wing to a cloud of powder in a matter of miliseconds (aluminum wings are merely reduced to a cloud of tinfoil). Therefore, aircraft are designed not to flutter in the first place. The certification testing for flutter is done in actual flight, because it can not be accurately tested on the ground (although eigenfrequency-tests are usually performed ahead of time). Finally, seeing that the Antares 20E is a battery powered aircraft, we do not see why we should be adding kerosine to the wings. Please enlighten us.
@helmutpohl2762 Жыл бұрын
Hi dvr 1337, - why don´t You go in the testing compartment and tell them personally what to do ? ----> I think, they are waiting for You .........................
@alexandertheissl55175 жыл бұрын
Mich würde mal interessieren ob bei so einer starken Durchbiegung die Querruder überhaupt noch Steuerbar sind, bzw bleibt das Querruder Gestänge und die Klappenansteuerung dauerhaft geschädigt ? ( natürlich bei einer nicht so starken Durchbiegung wie gezeigt , sondern beim max zulässigen Last vielfachen ) ???
@AntaresFilm5 жыл бұрын
Die Gängigkeit der Steuerung wurde im Vorversuch bis zur Belastungsgrenze (j=1) getestet. Die Steueranlage war gängig und wurde hierbei nicht dauerhaft verformt. In English: Alexander Theissl wrote: “I would be interested to know whether the ailerons are still controllable with such a strong deflection, or does the aileron linkage and the flap control permanently suffer damage? (Of course with a not as strong deflection as shown, but multiples at the maximum allowable load) ???” Answer: The mobility of the controls was tested in a preliminary test which reached limit load (j = 1). The control system retained full mobility and was not permanently deformed by this test.
@berndp34265 жыл бұрын
Bei "1.8" gibt die innere strukturelle integrität nach. Innerer Bruch der Struktur. Der Flügel bleibt aber noch in Form. Bei "2.3x" erfolgt die Überschreitung der Biegegrenze und endgültiger destruktiver Bruch.
@AntaresFilm5 жыл бұрын
Bei j=1.8 löst sich ein Verklebung in die Lasteinleitung (Versuchsaufbau). Die Lasteinleitung verschiebt sich aber nicht, da diese durch eine Sicherheitseinrichtung mechanisch in Position gehalten wird. Das Versuch geht weiter, und bei j=2.32 versagt dann der Flügel. English: Bernd P: "At "1.8", the internal structural integrity gives way. Inner failure of the structure. The wing is still in shape. At "2.3x", the bending limit is exceeded and the final destructive break occurs." At j = 1.8, a glue-joint in the test jig fails. However, the jig does not shift as it is mechanically held in position. The load-test continues, and at j = 2.32 the wing fails.
@uwebutterhof42295 жыл бұрын
Warum wird der test nicht mit Kerosin oder Ersatzweise Wasser das sich im Flügel befindet gemacht ? oder sind in den Flügel keine Tanks ?
@motivase5 жыл бұрын
Das ist ein Elektromotorsegler. In den Flügeln sind Akkus
@helmutpohl2762 Жыл бұрын
Hallo Uwe, wir sind stolz auf Dich und Deine Ideen : wäre doch toll, wenn das Wasser in den " Flügeln" auch noch gefroren wäre !!!
@glidingpassiongermany4075 жыл бұрын
Muss man noch eine extra Berechtigung machen, oder darf man das auch mit Windenberechjtigung?
@raphaelcrick7546 жыл бұрын
What is the altitude you reached with this autotow...
@vintagesurvivor6 жыл бұрын
What is the number he's counting off?
@AntaresFilm6 жыл бұрын
This is an ultimate load test, which means that the wing is loaded until it fails. The wing has been designed for a limit load; the maximum load that the wing is expected to see in service. The ultimate load must be a minimum of 1.5 x limit load. Safety factor = ultimate load / limit load. This wing was designed for a safety factor of 2 (other aspects were driving the design), and it actually reached 2.32. The voice in the video is calling out the safety factor at the given time.
@shakalpb11646 жыл бұрын
Amazing what sience is capable of !
@AntaresFilm6 жыл бұрын
Amazing what engineering is capable of :)
@e30kitty5 жыл бұрын
Amazing for what they waste energy, we have big problems on this planet but just invent more shit
@helmutpohl2762 Жыл бұрын
@@e30kitty----> Hi Kitty, world is waiting for You to be saved ! I am proud of You !!
@walkthedog467 жыл бұрын
Forces close to the fuselage would put the forces in shear. That's not the real world. Short distances contribute little to moment.
@rogser7 жыл бұрын
Hey Sandy. It seems like a distributed wingtip load test, the exactly opposite. Structural engineering at its finest.
@slowtraveler3 жыл бұрын
In fact you never have such forces close to fuselage, because whole wing is lifting device, so physically 'lifting point center' is at about middle of the wing. But as the force is distributed also further out of fuselage, where wing is not so strong as it is close to fuselage - they test it that way...
@helmutpohl2762 Жыл бұрын
Hi Sandy, - have a look to reality : Videos of gliders at high speed for example .----> looks same as in this test ....................
@rodfeher Жыл бұрын
there is not much force on the fuselage, one wing is attached directly to the other wing. the fuselage just hands below the strongest wing part (the union between wings).
@bertraminc94127 жыл бұрын
Shouldn't the bending force be applied more uniformly closer to the wing root at the same time simulated aerodynamic force is applied toward the wing tip?? I see the attachment points further toward the wing tip but aerodynamic lift force closer too the root also contributes to bending moment force at the wing root. Is this testing mid span failure mode only or are you evaluating the wing root/spar strength as well?
@lorss7 жыл бұрын
Nice video ; with 370 meters of dyneema what is the altitude you reached ? how log is the runway ? thanks !
@AntaresFilm7 жыл бұрын
We used a 370 m /1214 ft dyneema rope and 2 km / 1.24 miles of runway. With no water, we reached some 300 m / 980 ft altitude in a combination of fast tow (160 kph / 100 mph IAS) and some headwind (20/30 kph / 10-16 kts) At 902 kg / 1988 lbs, we maxed out at 250 m / 820 ft). A hard runway would probably improve these values. Friction on grass is one of the determining factors with regards to runway length vs. altitude. The idea is to get a safe semi-autonumous launch. The testing with the 18T idling during tow showed that cutting the engine mid tow still left the pilot with enough altitude for a shortened circuit and normal landing. We also view it as important to get the self-sustainer (which is not certified for launching) above minimum legal altitude from ground, so that no aviation authority can (rightly) claim that we use a self-sustainer engine for self launching. Applying engine power during the tow mainly led to issues with overrunning the tow rope and similar. It is therefore advisable to have an engine with throttle control (and a starter motor for safe ground starting). We are now in the process of getting our home airfield certified for car-towing, and I believe that being able to flight-test non-self launchers without getting a tow-plane in will be a nice in-house bonus.
@lorss7 жыл бұрын
Thanks for your answer ; with 160kph you mean car speed or glider speed ? Thanks
@AntaresFilm7 жыл бұрын
Hi lorss, IAS means Indicated Air Speed, thus the speed seen on the airspeed indicator in the aircraft. The effect of the headwind was thus to "extend" the length of the runway by allowing the car to go slower, and thus tow for a longer period of time before reaching the end of the runway.
@lorss7 жыл бұрын
Ok , understood . I have no experience in car towing . just to understand better : on winch we keep an average speed IAS of 110 Kph ( on my glider the VNE on winch is 130kph ) . My question is : why do not use a longer cable with pretty the same winch climbing ratio ? Thanks again !
@egidiobabbi90867 жыл бұрын
AntaresFilm a
@tomseim7 жыл бұрын
Liked the video, the music is horrible (I had to mute it). What type of tow line was used?
@AntaresFilm7 жыл бұрын
We used a 370 m long dyneema line. My apliogies for the music, it is hard to find acceptable music with proper licensing (We do not exactly have Hollywood budgets for our films).
@unibrein8 жыл бұрын
BMW 5 series?
@AntaresFilm8 жыл бұрын
We used a BMW 530d Touring with 258 hp and 4WD. The main issue is traction on grass when wet.
@unibrein8 жыл бұрын
+AntaresFilm I saw the 18T film just a minute later after posting my question, was at Reinsdorf during euroglide 2016, very cosy airfield!
@flightbase10 жыл бұрын
Lese ich etwas als einziger ein wenig Neid raus? Da hat man 4 Minuten Motorlaufzeit und nen 9 Stunden Flug ohne Motor - und dann ist hier Lärm das große Problem? Ich sags mal so: Mein Mitleid hält sich in Grenzen.
@gjsgfkdche11 жыл бұрын
manchen menschen ist echt nicht mehr zu helfen, leute wie du gehören sich sofort weggesperrt.
@kiramba12 жыл бұрын
leider geil...@ bshshf why not? antares fliegt auch auch ohne Elektro super. auserdem wiegen die Batterien ein paar Kilo und muessen auch immer wieder lange geladen werden. Mit den Elektrofliegen verdient man eben kein Geld. Und fliegen tun die antares super und in einer besseren Bauqualität und Detaillösungen als jeder anderer Hersteller es liefert.
@bshshf12 жыл бұрын
wer baut sich denn freiwilig einen verbrennungsmotor in seine antares wenn er ein elektrotriebwerk haben kann? ich packs nicht...
@OrmenKorte16 жыл бұрын
There are multiple aids and tools on the market to simplify tail dolly mounting. This Solution has the advantage that you mount the tail dolly before you lift the tail. since the lifting device attaches directly to the tail dolly, the lifting device cannot slip/fall over and damage the aircraft.
@OrmenKorte16 жыл бұрын
Modern self launcher designs tend to put a quite substantial weight on the tail wheel. The Antares 20E has the main landing gear far forward in order to maximize crash safety. This results in a 60 kgf load on the tailwheel when the engine is retracted. Lifting 60 kg with one hand while mounting the tail dolly with the other is a recipe for damaging both your back and the aircraft.
Пікірлер
Wird immer noch j=1,5 verlangt?
Ja, in der Luftfahrt wird grundsätzlich j = 1,5 verlangt. Es gibt natürlich auch Einzelparagrafen die höhere Sicherheiten verlangen, aber 1,5 ist der Grundregel.
@@AntaresFilm Danke, habe selbst Verkehrszulassung betrieben, da war j auch 1,5. Ich wollt’s bloß wissen weil ich schon lang was ganz anderes mache.
I love it
😂😂 die haben wirklich ein Flügel zerstört für nichts 😡🤷♂️
Super.
Hammer Technik
Was demonstriert dieser Demoflug? Dass man die Antriebseinheit im Flug in und außer Betrieb nehmen kann und dass die Lüftung ein akustisches Signal liefert, wenn sie offen ist?
Wenn wir die Zeit finden, werden wir versuchen, einen neuen Beitrag mit detaillierteren operativen Visualisierungen zu erstellen. Im Moment können die folgenden Aspekte beobachtet werden: -If we can find the time, we will try to create a new edit with better detailed operational visuals. For now, the following aspects can be observed: kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=tk3hjjBAm8hqefyS&t=36 Rollen mit elektrischem Antrieb. Lenkung über lenkbares Spornrad. -Taxiing under electric power. Steering via steerable tailwheel. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=s30D0DGR0Ojaomg0&t=70 Elektrischer Eigenstart mit hoher Beschleunigung und kurzer Startstrecke. -Electric self launch with high acceleration and short takeoff run. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=e74FVybHUgm8Vyyx&t=85 Hohe Steigrate durch leistungsstarken Elektromotor und steigungsoptimierten Propeller. -High rate of climb due to powerful electric motor and climb optimized propeller. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=wsREV1env9OovH8X&t=113 Elektrohydraulisches Einziehfahrwerk mit Einzelschalterbedienung und Software-Sicherheitsalgorithmen. -Electrohydraulic retracting landing gear with single switch operation and software safety algorithms. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=I8fjaVh5DWc5jfwT&t=324 Wolkenlandschaft von oben, ein ungewöhnlicher Anblick aus einem Segelflugzeug. -Cloudscape from albove, an unusual sight from a glider. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=oKHCYQlgIxDWHxEd&t=400 Motorbremsung, Zentrierung und Einfahren. Keine Vorkühlung des Motors erforderlich. Sehr geringer Höhenverlust. -Motor braking, centering and retraction. No motor pre-cooling required. Very little loss in altitude. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=gdhMezct-sWQg228&t=425 Motorausfahren und Leistungswahl mittels Einhebelbedienung Vollständiges Ausfahren des Hydraulikmotors innerhalb von 8 Sekunden, 10 Sekunden bis zur Leistung. Geschätzter Höhenverlust von 2 m für die Inbetriebnahme des Antriebs. -Motor extension and power selection by means of single lever control Complete hydraulic motor extension within 8 seconds, 10 seconds to power. estimated 2 m altitude loss for propulsion activation. Mehrfache Wiederholungen mit schöner Wolkenlandschaft im Hintergrund, um anständiges Filmmaterial für Präsentationen und ähnliches zu bekommen. Einige schöne Segelflugszenen ohne ernsthafte Versuche des Thermikfliegens. -Multiple repeats with beautiful cloudscape in the background in order to get decent footage for presentations and similar. Some nice gliding scenes with no serious attempts at thermalling. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=EcRGEXOUzIhKC2XX&t=692 Hydraulischer Ausfahrvorgang des Fahrwerks. Es ist zu beachten, dass zum Ausfahren keine (elektrische) Pumpenleistung erforderlich ist. Das Fahrwerk ist ein federbelasteter Mechanismus, der zum Ausfahren lediglich das Öffnen eines Ventils erfordert. -Hydraulic landing gear extension, Note that no (electric) pump power is needed for extension. The landing gear is a spring loaded mechanism which only requires the opening of a valve in order to extend. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=YEfbp4F7zUaJ2np5&t=735 Landung. Eine "lange Landung" mit Verlassen der Startbahn über Rollweg Delta wird beantragt und genehmigt. -Landing. A "long landing" with exit over Taxiway delta is requested and approved. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=nPs148m9VmJqZWzX&t=838 Kontrolliertes Verlassen der Startbahn mit Hilfe des lenkbaren Spornrads. -Controlled exit from runway by means of steerable tailwheel. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=CI1NP3iq2cvIR-mk&t=847 Ausfahren des Motors für das Rollen zurück zum Werk. Es ist zu beachten, dass die Antares mit ein abgelegten Flügelspitze gerollt wird. Je nach Bedingungen kann das Hauptrad nahe am Rand der Rollbahn gehalten werden. -Motor extension for taxiing back to the factory. Note that the Antares is taxied with one wingtip down. Depending on conditions, the main wheel may be kept close to the edge of the taxiway. kzread.info/dash/bejne/gYaKpriTc9WYfqw.htmlsi=xhpVmQ8_IFulOarm&t=862 Für zusätzlichen Komfort kann die Antares mit geöffneter Haube gerollt werden. -For added comfort, the Antares can be taxied with the canopy open.
Bravo perfect
Ich erinnere mich an PKW - schleppversuche mit einer "Fregatte " und Ka6. Ging, aber für ne Platzrunde hat es nicht gereicht:) Es war in den 60igern. Ha!
if I ever win the lottery I'll buy an electric glider for video production to promote gliders in the USA. I was working towards my Glider Lic. back when I was a teen (I'm 56, so it was a LONG time ago lol), but got involved in videography, and now I'm a retired Disabled Army Veteran with time on my hands but no money roflol
Wie hoch sind die Kräfte in Newton, die oben dran ziehen? Als das was der Kran oben zieht.
... für mich bitte in Kilogramm, - weder der arme Newton noch der arme Watt wären mit ihrem Namens - MISSBRAUCH einverstanden ....mir reicht schon der Mist von km/h und mph und kt ......genauso wie Links / Rechtsverkhr, verschiedene Steckdosen und Stromsysteme ... und das in unserer Zeit !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
@@helmutpohl2762 Mag sein. Newton ist aber die SI-Einheit für die Kraft und das hilft mir mehr. Und Kilogramm "ziehen" nur mit Hilfe der Erdbeschleunigung daran. Also Newton passt schon gut.
Hi any chance I can use a clip from your video in a video about different launch methods for gliders? Full credit and link to your video would be included. Can you email me [email protected] to confirm if that is OK or not? Thanks in advance! Tim
Terrible and loud music
Music taste can be discussed. We would have preferred no music, but the GoPro had a problem with audio recording. If you can find us some good licence free music, then we will consider it next time we are forced to add music. With regard to loudness, you should be able to adjust this on your device. If it is a PC running Windows, then look for the little loudspeaker icon, bottom right.
@@AntaresFilm what I intend saying is that the sound should ideally be of the glider, the wind, etc as if the viewer is with you on the flight. This could be superimposed with extremely light backgroud music, bach, vivaldi, Beethoven etc.... on the other hand I've got a pertinent question, whats the smallest airstrip needed for a safe autonomous takeoff with water (max auw), whats the ground roll for electric autonomous take off on grass?
Toller Test! Ist halt immer wieder interessant, wie hoch belastbar Material aus Faserverbundwerkstoff in anderen Sparten auch ist. 👍Composites rocks!
stronk
Is there a parachute on the end of the line to slow it down after release, or do you just let it fall onto the runway? How fast is the car going?
When we tested Autotowing for the Antares 18T, we used a parachute that used to serve as a brake chute extractor for the MIG 21. With the chute in place, we hade the problem of the chute opening whenever the car stopped accelerating during gear changes. With the Antares 23T testing, there was no parachute installed. This meant that the rope would fall a bit faster, but it removed the problem of premature chute deployment. Seeing that the installation we used had no way of pulling in the tow rope as it fell, there was no great advantage to a parachute. Also; with a parachute installed, any crosswind would make the tow rope drift further to the side of the runway. With regards to car speed: The car speed is adjusted over the course of the tow so that the glider flies at optimal IAS the whole time. The speed of the car will thus very much depend on the wind conditions at altitude. While the driver must force him(or her)self to accelerate briskly, the speeds involved are rather unspectacular.
that test is stupid. do it back and forth really fast like in a real flight+ add the kerosine into them and u will see what happens.
This test is required by aviation authorities in order to obtain certification. What is being tested is the maximum bending load that the wing will withstand before breaking. This loadcase can occur (for example) when the pilot flies into windshear while pulling maximum g in order to recover from a dive. Moving the wings back and forth really fast is a different problem, and it is called "flutter". Flutter can reduce a carbon fiber wing to a cloud of powder in a matter of miliseconds (aluminum wings are merely reduced to a cloud of tinfoil). Therefore, aircraft are designed not to flutter in the first place. The certification testing for flutter is done in actual flight, because it can not be accurately tested on the ground (although eigenfrequency-tests are usually performed ahead of time). Finally, seeing that the Antares 20E is a battery powered aircraft, we do not see why we should be adding kerosine to the wings. Please enlighten us.
Hi dvr 1337, - why don´t You go in the testing compartment and tell them personally what to do ? ----> I think, they are waiting for You .........................
Mich würde mal interessieren ob bei so einer starken Durchbiegung die Querruder überhaupt noch Steuerbar sind, bzw bleibt das Querruder Gestänge und die Klappenansteuerung dauerhaft geschädigt ? ( natürlich bei einer nicht so starken Durchbiegung wie gezeigt , sondern beim max zulässigen Last vielfachen ) ???
Die Gängigkeit der Steuerung wurde im Vorversuch bis zur Belastungsgrenze (j=1) getestet. Die Steueranlage war gängig und wurde hierbei nicht dauerhaft verformt. In English: Alexander Theissl wrote: “I would be interested to know whether the ailerons are still controllable with such a strong deflection, or does the aileron linkage and the flap control permanently suffer damage? (Of course with a not as strong deflection as shown, but multiples at the maximum allowable load) ???” Answer: The mobility of the controls was tested in a preliminary test which reached limit load (j = 1). The control system retained full mobility and was not permanently deformed by this test.
Bei "1.8" gibt die innere strukturelle integrität nach. Innerer Bruch der Struktur. Der Flügel bleibt aber noch in Form. Bei "2.3x" erfolgt die Überschreitung der Biegegrenze und endgültiger destruktiver Bruch.
Bei j=1.8 löst sich ein Verklebung in die Lasteinleitung (Versuchsaufbau). Die Lasteinleitung verschiebt sich aber nicht, da diese durch eine Sicherheitseinrichtung mechanisch in Position gehalten wird. Das Versuch geht weiter, und bei j=2.32 versagt dann der Flügel. English: Bernd P: "At "1.8", the internal structural integrity gives way. Inner failure of the structure. The wing is still in shape. At "2.3x", the bending limit is exceeded and the final destructive break occurs." At j = 1.8, a glue-joint in the test jig fails. However, the jig does not shift as it is mechanically held in position. The load-test continues, and at j = 2.32 the wing fails.
Warum wird der test nicht mit Kerosin oder Ersatzweise Wasser das sich im Flügel befindet gemacht ? oder sind in den Flügel keine Tanks ?
Das ist ein Elektromotorsegler. In den Flügeln sind Akkus
Hallo Uwe, wir sind stolz auf Dich und Deine Ideen : wäre doch toll, wenn das Wasser in den " Flügeln" auch noch gefroren wäre !!!
Muss man noch eine extra Berechtigung machen, oder darf man das auch mit Windenberechjtigung?
What is the altitude you reached with this autotow...
What is the number he's counting off?
This is an ultimate load test, which means that the wing is loaded until it fails. The wing has been designed for a limit load; the maximum load that the wing is expected to see in service. The ultimate load must be a minimum of 1.5 x limit load. Safety factor = ultimate load / limit load. This wing was designed for a safety factor of 2 (other aspects were driving the design), and it actually reached 2.32. The voice in the video is calling out the safety factor at the given time.
Amazing what sience is capable of !
Amazing what engineering is capable of :)
Amazing for what they waste energy, we have big problems on this planet but just invent more shit
@@e30kitty----> Hi Kitty, world is waiting for You to be saved ! I am proud of You !!
Forces close to the fuselage would put the forces in shear. That's not the real world. Short distances contribute little to moment.
Hey Sandy. It seems like a distributed wingtip load test, the exactly opposite. Structural engineering at its finest.
In fact you never have such forces close to fuselage, because whole wing is lifting device, so physically 'lifting point center' is at about middle of the wing. But as the force is distributed also further out of fuselage, where wing is not so strong as it is close to fuselage - they test it that way...
Hi Sandy, - have a look to reality : Videos of gliders at high speed for example .----> looks same as in this test ....................
there is not much force on the fuselage, one wing is attached directly to the other wing. the fuselage just hands below the strongest wing part (the union between wings).
Shouldn't the bending force be applied more uniformly closer to the wing root at the same time simulated aerodynamic force is applied toward the wing tip?? I see the attachment points further toward the wing tip but aerodynamic lift force closer too the root also contributes to bending moment force at the wing root. Is this testing mid span failure mode only or are you evaluating the wing root/spar strength as well?
Nice video ; with 370 meters of dyneema what is the altitude you reached ? how log is the runway ? thanks !
We used a 370 m /1214 ft dyneema rope and 2 km / 1.24 miles of runway. With no water, we reached some 300 m / 980 ft altitude in a combination of fast tow (160 kph / 100 mph IAS) and some headwind (20/30 kph / 10-16 kts) At 902 kg / 1988 lbs, we maxed out at 250 m / 820 ft). A hard runway would probably improve these values. Friction on grass is one of the determining factors with regards to runway length vs. altitude. The idea is to get a safe semi-autonumous launch. The testing with the 18T idling during tow showed that cutting the engine mid tow still left the pilot with enough altitude for a shortened circuit and normal landing. We also view it as important to get the self-sustainer (which is not certified for launching) above minimum legal altitude from ground, so that no aviation authority can (rightly) claim that we use a self-sustainer engine for self launching. Applying engine power during the tow mainly led to issues with overrunning the tow rope and similar. It is therefore advisable to have an engine with throttle control (and a starter motor for safe ground starting). We are now in the process of getting our home airfield certified for car-towing, and I believe that being able to flight-test non-self launchers without getting a tow-plane in will be a nice in-house bonus.
Thanks for your answer ; with 160kph you mean car speed or glider speed ? Thanks
Hi lorss, IAS means Indicated Air Speed, thus the speed seen on the airspeed indicator in the aircraft. The effect of the headwind was thus to "extend" the length of the runway by allowing the car to go slower, and thus tow for a longer period of time before reaching the end of the runway.
Ok , understood . I have no experience in car towing . just to understand better : on winch we keep an average speed IAS of 110 Kph ( on my glider the VNE on winch is 130kph ) . My question is : why do not use a longer cable with pretty the same winch climbing ratio ? Thanks again !
AntaresFilm a
Liked the video, the music is horrible (I had to mute it). What type of tow line was used?
We used a 370 m long dyneema line. My apliogies for the music, it is hard to find acceptable music with proper licensing (We do not exactly have Hollywood budgets for our films).
BMW 5 series?
We used a BMW 530d Touring with 258 hp and 4WD. The main issue is traction on grass when wet.
+AntaresFilm I saw the 18T film just a minute later after posting my question, was at Reinsdorf during euroglide 2016, very cosy airfield!
Lese ich etwas als einziger ein wenig Neid raus? Da hat man 4 Minuten Motorlaufzeit und nen 9 Stunden Flug ohne Motor - und dann ist hier Lärm das große Problem? Ich sags mal so: Mein Mitleid hält sich in Grenzen.
manchen menschen ist echt nicht mehr zu helfen, leute wie du gehören sich sofort weggesperrt.
leider geil...@ bshshf why not? antares fliegt auch auch ohne Elektro super. auserdem wiegen die Batterien ein paar Kilo und muessen auch immer wieder lange geladen werden. Mit den Elektrofliegen verdient man eben kein Geld. Und fliegen tun die antares super und in einer besseren Bauqualität und Detaillösungen als jeder anderer Hersteller es liefert.
wer baut sich denn freiwilig einen verbrennungsmotor in seine antares wenn er ein elektrotriebwerk haben kann? ich packs nicht...
There are multiple aids and tools on the market to simplify tail dolly mounting. This Solution has the advantage that you mount the tail dolly before you lift the tail. since the lifting device attaches directly to the tail dolly, the lifting device cannot slip/fall over and damage the aircraft.
Modern self launcher designs tend to put a quite substantial weight on the tail wheel. The Antares 20E has the main landing gear far forward in order to maximize crash safety. This results in a 60 kgf load on the tailwheel when the engine is retracted. Lifting 60 kg with one hand while mounting the tail dolly with the other is a recipe for damaging both your back and the aircraft.