Podcasts about autorotation

In dieser Podcast-Episode wird Gordon begrüßt, der Einblick in die Ausbildung und den Werdegang eines Polizeihubschrauberpiloten gibt. Themen reichen von den Einstellungstests und der Qualifikation über die Steuerung eines Hubschraubers und die Schwierigkeiten von Hovern, Autorotation und der Arbeit mit Außenlasten. Gordon erklärt auch Unterschiede zu anderen Hubschraubern, wie Gyrocoptern, und beantwortet Fragen zu Themen wie dem Sitzen des Piloten, dem Fliegen bei Nacht und besonderen Einsätzen. Die Episode schließt mit interessanten Geschichten und einem Hubschrauberflug nach EDDF.

Da Andreas und Tim beim letzten Mal nicht fertig geworden sind, laden sie euch heute zu Notverfahren Teil 2 ein. Diesmal geht es über ihre persönlichen Lieblingsnotverfahren, die da wären Probleme mit der Heckrotorsteuerung und Autorotation. Es geht um Grundsätze, die bei allen Notverfahren gelten und eingehalten werden sollten und den Ablauf bei "großen" Notverfahren, wie Triebwerksausfall. Wann muss so ein Notverfahren geflogen werden, wie läuft das ab und welche verschiedenen Möglichkeiten habe ich mein Luftfahrzeug sicher an den Boden zu bringen. Aus ihrer persönlichen Erfahrung und vielen hunderten Stunden Training lassen die beiden tiefe Einblicke in eins der spannendsten und herausforderndsten Themen in Ausbildung und jährlichen Checkflügen zu. Viel Spaß bei Abgehoben - der Hubschrauber Podcast

Autorotation's some people love them others, well they practice them just because you never know when you might be able to save yourself from a re-kit.   The gang is all here this week, mostly here anyway Dan is still sick with COVID.  Please stand 6 feet away from the speaker while listening to this episode!  We do the usual what have we been up to this week, and then we pick Scott and Devin's brain with the ins and outs of learning and perfecting autorotation's.  You will get to hear thoughts on entry to aerobatic autorotation's as well,  We hope you enjoy this episode! https://rchelinationv3.locals.com Visit www.rchnv3.com to find links to various pod catchers so you never miss an episode.  Find us on Facebook at https://www.facebook.com/RCHNV3

Join me for a summary of Madhur's lecture on the biomechanics and aligners, where he describes the fundamentals biomechanics of aligners, explains the reason for the shortcomings of aligners and his tips to reduce them. How do aligner work? Two approaches Shape moulding effect – shape driven Move position of teeth to ideal Invisalign 80% through shape moulding Attachments 20% force delivery Perpendicular surface with Invisalign When shape moulding is considered 2g/mm2 of stress, with attachments 20g/mm2, higher stress to aligner, which is a downside How to aligners treat malocclusions Deep bite “Water-melon seed effect” – squeeze a seed and it compression it moves left or right Squeezing through shape moulding effect Aligners can apply force through to the centre of resistance of the tooth Openbite Advantages in aligners when compared to fixed Draw bridge effect Relative extrusion through Retroclination 60% drawer bridge effect Harris 2020 Lever principle Autorotation effect 28% Harris 2020 Space closure Common lateral openbite in space closure, why this happens Equal moment to posterior and anterior segment during space closure Counterclockwise posterior segment, clockwise anterior segment = BOWING EFFECT Does not commonly happen in fixed due to archwire rigidity How good are aligners at moving teeth Root movement NOT OBSERVED! Space closure Extraction of 4 premolars - Dai 2019 Molars 2mm unplanned anchorage loss 6 degree molar tipping Incisors Retrocline 6 degrees more No incisor root retraction – uncontrolled tipping Root movement Conclusion: Roots cannot be moved with aligners such appliances cause tooth movement by tilting motion Zhang 2015 Why can't aligners move teeth as efficiently as braces? First principles based understanding Interplay of dumping and counterplay of moment = bodily tooth movement Braces – create AND CHANGE couple and counter couple through size of wire, material Aligner – cannot change material properties Material factors Stress-relaxation 80% of force lost after 100 minutes Fang 2019 AJODO Modulus of elasticity – ability to transfer energy Higher modulus – greater tooth movement Niti 45GPa, Aligner 1-2GPa Khoda 2013 Inferior in delivering energy Viscoelastic material Absorbing shock, dissipating energy in the form of heat Ideal for retainer – force dampener Biomechanics is the law – everything else is just a recommendation Madur's lecture in full available on youtube: https://www.youtube.com/watch?v=ycNokW1ojIY&t=3s&ab_channel=orthobites.org

Join me for part 2, where Jae Park describes how to plan either extrusion or intrusion movements, the key evidence around AOB closure and TADs, aligners and orthognathic surgery. Conclusion Resting tongue position is the main soft tissue factor. For increased LAFH, posterior intrusion with tads is indicated. Invisalign for mild AOBs, correction is achieved with incisor extrusion mainly. TADs for intrusion should be placed in the palate should be as distal as possible. If intruding upper molars with TADs, lower molars will erupt unless an appliance is used. 80% of vertical relapse with posterior intrusion occurs in 1st year after debond. How to plan intrusion posterior teeth Vs extrusion of anterior teeth Extrusion: No autorotation Increase incisal show Effects of intrusion: Autorotation of mandible Reduction in LAFH Reduced posterior tooth show CONSIDER EFFECTS ON OCCLUSAL PLANE WITH POSTERIOR INTRUSION If too steep = occlusal interference If too flat = reverse smile How to plan extrusion / intrusion: Upper incisor tip positioned 4mm from the upper lip tip Evidence of AOB closure with TADs Posterior intrusion of 2mm in the upper and 1mm in the lower 1mm, with 3mm of autorotation. Deguchi 2011 TADs and intrusion less stable, 1mm or 30% relapse Sugawara 2002 If intrude upper posterior teeth, use lower fixed or VFR to prevent lower posterior over eruption. Aligners Correct AOBs through 1.5mm incisor extrusion, minimal posterior changes. Khosravi 2017 Orthognathic surgery Reduced stability due to Stylomandibular and medial pterygoid muscles. Solution Strips muscles in surgery

#284 AUTOROTATION: Throttle Chop or Smooth Roll Off? Welcome to day 284 Coffee with Kenny! Today is a quick one on this Saturday! Answering a question from a member asking about surprise throttle chops and asks about autorotations and auto power on/power off. Of course, first I will say, it depends on the aircraft you are flying and the procedures in the POH. With that being said, there may be times where you need to veer from what the manufacturer says. I'll explain in the following video.

Robinson R-66 first flight and autorotation Day 173 Coffee With Kenny! We have an awesome video for you today! Our friends I met at Heli Expo stopped by with an R66 on their way through! They took me and Mark up for a ride, while Heather filmed on the ground! We got a great little interview with them as well on where they are from and what they have to offer in the helicopter world. Mark did his check ride today as well, we'll here from him! Great guys, what a fun day!

AUTOROTATION OVERSPEEDS will happen and need report to maintenance! First off thank you so much for your feedback from yesterday's video! Today I wanted to talk about autorotation overspeeds. The important thing is to fess up when this happens, and make sure your report it to your mechanic. Report the make and model, and it's just better to be safe and do the right thing when this happens. So, watch the video and share your experiences with us!

Initial aft cyclic upon autorotation entry | EMERGENCY PROCEDURES | Day 122 Reading a question from a member referring to an accident. We train to a standard and we train Half cyclic, you have to add that. Today I discuss good reasons that you need a half cyclic pull! Watch the video and let us know your experiences and questions below! Thanks for your support! #coffeewithkenny

Dr. Ben Lawner, medical director for Allegheny Lifeflight and EMS and emergency physician, presents his talk on advanced airway techniques and some clinical advice on improving success with different types of advanced airways.  Rotor Wash logo designed in conjunction with ECHO member Bud Lavin photo submission.  Check out our website for more information about upcoming events and announcements! ECHO HeliOps  Music provided by BenSounds.com

This episode uncovers a rich vein of vocal electronica thriving in the independent zones of post rock, trip-hop, idm, alternative and related genres. Plus some instrumental tracks we just had to share. Hosted by Voide.01 TheTrees - Odd One Out (UK)02 VFSix - Moscow (Russia)03 Voodoo Economics - In the next place, cement will float like trees. (USA)04 Re-Drum - Purple (France)05 Serkan Süleymaniye - Pir (Turkey)06 Autorotation - Ginger Pants (UK)07 Vienna Psychoanalytical Society - There Is No Normal (Canada)08 Fox Thomas - Dying (UK/Netherlands)09 Jane Silence - Ache (USA/Greece)10 Jennifer Delano - Amsterdam - Si Begg's Grumpy Old Dj Remix (Netherlands)11 Cwtch - Fragility (Wales/Australia)12 Max Waves - Double-U (t-phone mix) (Italy)13 Baskyl - Mrs. Sibah Reign (Germany)14 Distant Fires Burning - Messier 70 - NGC 6681 (Belgium)Duration: 1:31:49Click to play / right-click to download

Hand picked gems from the electronic soundscapes of Poland, UK, USA, Spain, Norway, Russia, Sweden, Australia and France. Deep eclectic sounds across genres like tech-house, ambient, post-rock, synthpop, trance, experimental, nu-jazz. Hosted by Voide.01 Baxandall IP - Zima (Original Mix) (Poland)02 Autorotation - Mittelschmertz - sp00 Remix (UK/USA)03 Von Hash - Keep People Stupid (Spain)04 Ugress - Time Travel (Norway)05 Beneva vs. Clark Nova - 88 kilos of excrement (Norway)06 THEreminGIRL - One Day (doyeq remix) (Russia)07 Voide - When The Skies Are Grey (Sweden)08 PIXSID - Paper Hearts (So Horny Mix) (USA/Australia)09 Reconsiderate - The Editor (feat. Mr Scott) (USA)10 Runman - tourney of matter (Australia)11 Snowy - Asia (UK)12 One Of Three - Trinity (USA)13 HealeyIsland - Your Final Journey (UK)14 PredWilM! Project - Lament (France) Duration: 1:50:52Click to play / right-click to download

How do planes fly? How do planes fly? Backs up what Johnny was saying about how wings work (Explain That Stuff!) The physics of sailing (UNSW) You can sail into the wind, but not exactly upwind - The physics of sailing (Physics Buzz blog, Physics Central) The hipster PDA: Merlin Mann's index card system (43 Folders) What is turbulence? From a fluid dynamics perspective (Wikipedia) Turbulence - everything you need to know (Patrick Smith's Ask the Pilot) Air turbulence - how dangerous is it? (livescience) What is tacking in sailing? (Wikipedia) What is tacking in sailing? (School of Sailing) The spice routes were the 'maritime silk road' (UNESCO) The search for new sea routes for the spice trade really kicked off in the 1500s (Encyclopaedia Britannica) Trade routes followed the 'trade winds' (Wikipedia) Prevailing winds blow from a certain direction over a point on the Earth's surface (Wikipedia) How do planes fly upside down? (Physics StackExchange) Flying upside down (Air & Space, Smithsonian) Wing flaps & slats (NASA) More flaps: Wing flaps for lift augmentation in aircraft (Decoded Science) What is drag? (NASA) Aerodynamics, an introduction - including a description of drag (Explain That Stuff!) Four forces affect things that fly: weight, lift, thrust, drag (Smithsonian National Air & Space Museum) Powered aircraft (Wikipedia) Unpowered aircraft (Wikipedia) Unpowered flight (Wikipedia) Flight (Wikipedia) What is autorotation? (Wikipedia) The Gimli glider: Air Canada plane that glided to land on a race track after running out of fuel in 1983 (Wikipedia) The Gimli glider was recently sold...after a further 25 years of service! (Financial Post) Video of an aborted landing just a few feet off the ground - also shows how much wings flex (YouTube) Pilots have detailed checklists (Patrick Smith's Ask the Pilot) How a glider works...Remember the space shuttle? It was a glider! (NASA) Birds, thermals & soaring flight (Aerospaceweb.org) Birds of prey riding thermals (YouTube) Plane wings are pretty flexible (Wired) Turbulence & why you should buckle up (Civil Aviation Safety Authority) Headwinds & tailwinds (Wikipedia) Headwinds allow take off & landing on shorter amounts of runway (United Hub) Airport design & naming runways (NASA) Runway numbers explained (Atlas Obscura, YouTube) Airspeed versus ground speed (Aerospaceweb.org) Planes can levitate on the ground if it's windy enough (YouTube) How does a wind sock work? A pilot explains (YouTube) What is a jumbo jet? A Boeing 747 (Wikipedia) Flaps during takeoff & landing (Wikipedia) Thrust reversal (Wikipedia) Thrust reversal (Purdue University) Stopping the A380 (Air & Space Smithsonian) Rolls Royce jet engines (Rolls Royce) Picture: A Boeing 717 with 'petal' thrust reversal on engines (CQ Plane Spotting) A database of paper aeroplanes with folding instructions (Fold'NFly) What do winglets do? i.e. The flipped up bits on the end of plane wings (NASA) Winglets or 'wing tip devices' (Wikipedia) Why do golf balls have dimples? (livescience) Shark scales create tiny whirlpools for speedy swimming (livescience) Proper scientific paper: Shark-skin surfaces for fluid-drag reduction in turbulent flow (The Royal Society) Bros had flipped up fringes like winglets (Old School Pannini) What is a jet stream? (livescience) What is drift diving? (PADI) Flight times between New York & London slashed by jet stream's power (ABC Australia) The Flat Earth Society What is a 'great circle' & how are they used for flight routes? (AeroSavvy) Air distance & flight time calculator (Great Circle Mapper) There are flight routes over the North Pole, but probably not Antarctica (Wikipedia) Fonzie cool (YouTube) Chesley Sullenberger: the super cool pilot that landed the plane on the Hudson River (Wikipedia) US Airways flight 1549 that landed on the Hudson River (Wikipedia) British Airways flight 9 whose engines stalled in an ash cloud in 1982: Lucy was exaggerating slightly, it wasn't a 2-hour emergency...but still pretty serious (Wikipedia) Flying or driving: Which Is safer? (Science 2.0) Flying, driving or trains: Which Is safer? (AirlineReporter) Smithsonian National Air & Space Museum The Wright Brothers 'invented' aviation in 1903 (The Wright Bros) The Apollo Lunar Module landed on the moon in 1969 (Wikipedia) Sydney to London in 4 hours just got another step closer (News.com.au) Australian scientists just successfully launched a jet which could fly from Sydney to London in 2 hours (Business Insider Australia) The Concorde supersonic jet (Wikipedia) Concorde: 40 fascinating facts (The Telegraph) Corrections Sorry Lucy, you mixed up Newton's 3rd & 1st laws: The 3rd law is relevant to plane wings...'equal & opposite reaction' (NASA) Sorry Johnny, helicopters CAN fly without power via 'autorotation' (copters.com) Cheeky review? (If we may be so bold) It'd be amazing if you gave us a short review...it'll make us easier to find in iTunes: Click here for instructions. You're the best! We owe you a free hug and/or a glass of wine from our cellar

The difference between an expensive falling brick and a helicopter is rotor RPM. Pete Gillies talks about the importance of aft cyclic in autorotation entry to conserve rotor RPM in this episode. Depending on where you did your training this might come across as ‘yeah, of course, doesn’t everyone do this’. If that’s you then … Continue reading "RWS 41 – ‘Cyclic Back’ in an Autorotation Entry with Pete Gillies" The post RWS 41 – ‘Cyclic Back’ in an Autorotation Entry with Pete Gillies appeared first on The Rotary Wing Show Podcast.

With the ink still drying on his A&P licence Jerry landed a job at Robinson Helicopters and went flying on his first day on the job with Frank Robinson in R22 serial number 2. We cover several of the experiences from Jerry’s career in this episode. Jerry Trimble is today’s guest and is the owner … Continue reading "RWS 30 – Touchdown Autorotation Competition and more with Jerry Trimble" The post RWS 30 – Touchdown Autorotation Competition and more with Jerry Trimble appeared first on The Rotary Wing Show Podcast.

Join James and Chris for a follow-up on the GY611 gyro setup from last week. They also discuss the uniflow fuel system, pitch curves, throttle curves, and how to prepare for and practice autorotations. Be sure to check out the video of the week too!Mentions:Video of the Week (YouTube)GY611 setup details (RCG forum post)Uniflow fuel system informationAutorotation setup and tipsAutorotation spot landingsMacr0t0r recap notes for Ep#23

Join James and Chris for a follow-up on the GY611 gyro setup from last week. They also discuss the uniflow fuel system, pitch curves, throttle curves, and how to prepare for and practice autorotations. Be sure to check out the video of the week too!Mentions:Video of the Week (YouTube)GY611 setup details (RCG forum post)Uniflow fuel system informationAutorotation setup and tipsAutorotation spot landingsMacr0t0r recap notes for Ep#23

In dieser Studie wurde eine individuelle faziale Weichteilprognose mit der Finiten-Elemente-Methode getestet und deren Validität und Prognosegenauigkeit geprüft. Zum Vergleich wurden die Messwerte mit einem zweidimensionalen Verfahren, dem Dentofacial Planner Plus Version 2.01, verglichen. Für die Erstellung der Weichteilprognose stellten sich 12 erwachsene Probanden zur Verfügung, bei denen eine kombiniert kieferorthopädisch-kieferchirurgische Behandlung durchgeführt wurde. Zur präoperativen Prognose der Weichteilveränderungen wurde ein Profilfoto mit einer digitalen Kamera der Firma Canon, EOS 10D, und ein Fernröntgenseitenbild für die Weichteilprognose des zweidimensionalen Verfahrens hergestellt. Nach Eingabe der kephalometrischen Messpunkte in das interaktive Softwaretool des Dentofacial Planners konnte die Operation simuliert werden. Dazu wurden die Werte der Modelloperation hinzugezogen. Nach Verschiebung der Maxilla und Mandibula in sagittaler und vertikaler Richtung errechnete die Software die Weichteilprognose, die als Profillinie zweidimensional visualisiert wurde. Für die digitale Gesichtserfassung der Probanden wurden mittels 3-D Laserscanner die fazialen Weichteile für das dreidimensionale Verfahren erfasst. Die akquirierten Punktwolken konnten vereinigt und über spezielle Algorithmen in ein CAD-Modell verarbeitet werden. Über diese CAD-Schnittstelle war es möglich ein Finite-Elemente-Modell zu generieren. Die Simulation zur fazialen Weichteilprognose erfolgte mit der Software Design Space (Ansys Inc.). Im Unterschied zum zweidimensionalen Verfahren besteht beim Finite-Elemente-Verfahren die Möglichkeit einer falschfarbenkodierten Visualisierung der regionalen Weichteilveränderungen im dreidimensionalen Raum. Es kann neben der Prognose der Profillinie auch eine ästhetisch wichtige Beurteilung der Wangen, der Nasenflügel und Nasiolabialfalten getroffen werden. Bei vergleichenden Messungen zwischen den beiden Prognoseverfahren zeigen sich bezüglich der Validität und der Prognosegenauigkeit eindeutige Unterschiede. Der durchschnittliche Gesamtfehler des Dentofacial Planners ist fast doppelt so hoch, im Vergleich zum Fehler des Finite-Elemente-Verfahrens. Es konnten regionale Unterschiede festgestellt werden. Im Mittelgesicht ist die Prognose der beiden Verfahren als gut einzustufen, währenddessen die Prognose des unteren Gesichtsdrittels mit dem Dentofacial Planner hohe Abweichungen zum postoperativen Gesichtsprofil aufweist. Diese Ergebnisse wurden von Fischer (2002) in einer Dissertation bestätigt. Die Prognosegenauigkeit des Finite-Elemente-Verfahrens ist im unteren Gesichtsdrittel höher. Jedoch wurde am Messpunkt Weichteilmenton Abweichungen in vertikaler Richtung mit Messwerten von über 1,5 mm aufgezeigt. Eine mögliche Erklärung dafür ist die geringe Simulation der Autorotation des Unterkiefers bei der Bearbeitung des Finite-Elemente-Modells. Es muss jedoch berücksichtigt werden, dass trotz der besseren Beurteilung der individuellen, fazialen Weichteilverhältnisse in allen drei Dimensionen des Raumes im Vergleich zum zweidimensionalen Verfahren keine absolut perfekte Weichteilprognose getroffen werden kann. Um dieses Verfahren der Finiten-Elemente-Methode zu verfeinern sollten bei der Herstellung des Finite-Elemente-Modells die Weichgewebsschichten und die Autorotation des Unterkiefers berücksichtigt werden.