Contact
About Us Library Blog Terms Final Approach Course

Low Rotor RPM From Live Tuesday

Nov 15, 2017

Kenny Keller has authored 7 books that have been a huge help to the aviation community. Check them out here by clicking these words: Amazon #1 best seller Kenny Keller

Low Rotor RPM from Live Tuesday

 Low Rotor RPM From Live Tuesday

 Here is what members are saying: (and if you send me something and do not specify, I always get your permission before posting it for others to see.)

"Hi Gary,  I wanted to let you know how much I enjoyed yesterday’s program.  I had to watch it after the fact but I think its one of the best you have done and the amount of good information it provided was great!   The informational section on low RPM was well put together but I also enjoyed hearing about the mishaps that you presented.  Presenting and discussing situations like this is extremely helpful and drives the points home far better than in a lecture format. I think it would be helpful to share things like this on a more regular basis as it adds tremendous additional education to your already great site. Thanks again from a newcomer here on the east coast.  Van Geraniotis"

Low Rotor RPM From Live Tuesday

Experienced CFIs talk about personal experiences with Low Rotor Rpm and roll a couple crash videos from YouTube, where the pilot flew into the ground with the low rotor RPM horn going off. No recovery of RPM, no auto rotation initiation, no flare..... just fly into the ground. We here at Helicopter Online Ground School try an keep up with what is killing helicopter pilots and adjust our training emphasis on those issues, while at the same time maintaining content that will help you pass your check ride. 

When you are training with your CFI, whether it is a BFR or you are working on a rating, do low RPM recovery exercises often enough to make it muscle memory to lower collective and roll on throttle. Especially if you are flying a Robinson with a governor, this is important.  As a CFI in the Robinson, I turn the governor off on the student periodically and guard the collective. I want to see him recognize the governor light illuminated and also manage the throttle without the governor.

On my R44 instructor endorsement ride with the examiner, he switched the governor off a dozen times at least and rolled the throttle down. He even did it in the hover taxi twice. This emphasis on low RPM recovery by the examiner, shows the priority that he gives it. He ranks RPM recovery ability pretty high in his decision to sign you off for instructing in the aircraft.

So many bad things come from Low rotor RPM. Retreating blade stall, LTE (loss of tail rotor effectiveness), excessive blade coning, and catastrophic stall of the main rotor blades. I can't emphasise enough, how important it is for the pilot to react promptly and appropriately to low rotor Rpm.

Low Rotor RPM From Live Tuesday

Chris discusses an Enstrom crash that started with a student allowing the RPM to drop below operating range. Chris took over and tried to recover and decided to do a run on landing when the RPM could not be restored. Due to the terrain, the helicopter rolled over.

Gary discusses a transmission failure in a Hiller that had no warning light or horn. He caught the engine and rotor rpm dropping and lowered collective to keep them in the green. He continued to lower until the needles eventually split and he landed safely with an auto rotation. The engine did not have enough power to keep power to the rotor system through a transmission that had bearings falling apart. By lowering collective to keep the rotor RPM in the operating range, the sprag clutch allowed the rotors to keep spinning despite the transmission falling apart and eventually bogging the motor to  a complete stall moments before landing.

Low Rotor RPM From Live Tuesday

Gary also has had a cog belt (rotor way transmission) break in flight. This caused an immediate split in the tach needles as the engine RPM went to red line and the rotor RPM began dropping. If the collective would not have been lowered completely within a couple seconds, the blades would have stalled at altitude. Gary also had a second belt failure in the same helicopter a couple years later, only this time the failure was gradual as the cogs stripped off the belt and the tach needles started separating gradually. As the belt lost more cogs, the collective had to be lowered more and more to keep rotor RPM in the operating range. Eventually the collective was all the way down and the throttle had to be reduced to save the engine from overspeed (full auto rotation). 

We do not know when these things are going to happen, but when they do, main rotor rpm is your priority. Our stored energy in the helicopter is altitude, airspeed, and RPM. We can deal with a lack of altitude and airspeed possibly, but a lack of RPM will most always end badly.

 Low Rotor RPM From Live Tuesday

Let Helicopter Online Ground School help you with all of your ratings! We have four FAA certified courses, Private Pilot, Commercial Pilot, Instrument Pilot, and Certified Flight Instructor. We have a bundle pack called Professional Pilot Lifetime Membership, which includes all this for life.

Any course completion will automatically award WINGS phase credits and you are on your way to satisfying the flight review requirement.

Gary Cleveland, Chief Pilot

Helicopter Online Ground School

[email protected]

574-767-1797

 

Categories

All Categories #204 #233 #234 #256 #257 #258 #259 #260 #261 #263 #264 #265 #266 #267 #268 #269 #270 #271 #272 #273 #275 #276 #277 #278 #279 #280 #281 #282 #283 #284 #285 #286 #287 #288 #289 #290 #291 #292 #293 #294 #295 #296 #55 #59 #60 #79 #90 #certifiedflightinstructor #commercialpilot #finalapproachcourse #helicoptergroundschool #helicopterhoverauto #helicopterhovering #privatepilot #learningtohover #helicopteronlinegroundschool #helicopteronlinegroundschool #helicopterpilot #helicoptertraining #hogs #hoverauto #hoverautomistakes #hoveringautorotation #kennykeller #privatepilot #r44 #rating #robinsonr44 #vip 10 101 12 year sale 180 autorotation 180 degree turn 200 pilot hours 2018 flight instructor of the year 2019 heli expo 3rd class medical 40 hours 91.119 91.17 accident acs add on add on pilot reactions aeronautical afi aft cyclic air traffic aircraft aircraft accidents aircraft checks airline pilot to helicopter pilot airport ramp airspace airspace lessons airspace regulations airwork las vegas amazing helicopter pilots anniversary approach approaches autoroations autorotation autorotation overspeeds autorotations aviation weather aviation weather tools behind the scenes bell 47 bell jet ranger block time blueprint bonus book button buy a helicopter cabri cabri g2 cabri helicopter california california choppers california highway patrol canadian helicopter pilot training certified flight instructor cfi cfi time cfi training cfii check check ride check ride passed check ride prep check ride preparation check ride study guide check ride success check ride tips checklist checkride checks chicago class g vs class d clearing turns closed runway coffee with kenny coffeewithkenny cold weather flying collective angle collective control college degree commercial commercial check ride commercial helicopter pilot commercial pilot commercial pilot requirements communication copy cost of flying helicopters course crasg cross country cross country helicopter flight cyclic hovering cyclic speed cyclic trim dan "taz" christman danger day day 249 day 250 day 252 day 253 day 254 day 255 day 4 deal decision demo designated device doors doors off flying down downtown downtown chicago downtown flight dpe dynamic rollover ems ems helicopter jobs ems pilot ems pilots endorsements engine failure enstrom enstrom helicopter enstrom helicopter transition enstrom helicopters enstrom transition etl effective translational lift lesson examiner exclusive expense experience experimental helicopters eye exam eye test faa faa medical certificate exam faa safety faa wings faa wings credit faa written test fac fatal accident fatal helicopter accidents fatal helicopter crash fear of failure female pilot final final approach course first first class medical first flight fixed wing fixed wing add on fixed wing before rotor? fixed wing or helicopter fixed wing time flight flight computers flight instruction flight instructor of the year recommendation flight school flight school scams flight schools flight simulators flight trainging flight training fly flying flying at night flying in indiana flying with passengers and cargo foi's foreflight foreflight on ipad foreign helicopter student foreign student helicopter training free free helicopter ground school frequency of flying full future pilots gear golden gate bridge gopro governor vs throttle ground ground resonance ground school on any computer or device ground school podcast guarding the collective guimbal guimbal cabri g2 guimbal cabri g2 training h.o.g.s. hai hangar hangar safety hazards headsets helcopter helcopter ground schools heli expo heli expo 2019 helicopter helicopter abnormal vibrations helicopter accident helicopter accident review helicopter accidents helicopter add on helicopter add on rating helicopter aerobatics helicopter altitude helicopter approach helicopter approach and landing helicopter careers helicopter cfi helicopter cfi pilot helicopter cfii helicopter cfii pilot helicopter check ride helicopter check ride prepare helicopter check ride test tips helicopter check ride tips helicopter checklist helicopter chip light helicopter collective helicopter confined area landings helicopter controls helicopter cost helicopter cross country helicopter dolly helicopter dolly monster helicopter dreams helicopter ems jobs helicopter ems pilot helicopter engine failure helicopter faq's helicopter fatal accidents helicopter ferry flights helicopter flight helicopter flight control helicopter flight controls helicopter flight instructor helicopter flight instructor of the year helicopter flight lessons helicopter flight over water helicopter flight prep helicopter flight school helicopter flight schools helicopter flight time helicopter flight time hours helicopter flight tips helicopter flight training helicopter flight training schools helicopter flight training' helicopter flying at night helicopter flying careeres helicopter fuel helicopter fuel amount helicopter fuel gauge helicopter go around's helicopter ground helicopter ground school helicopter ground schools helicopter handbook helicopter hangar helicopter hems pilot helicopter hours helicopter hovering helicopter icing helicopter instructing helicopter instructor helicopter instrument pilot helicopter instrument training helicopter insurance helicopter intro flights helicopter jobs helicopter knee board helicopter landing helicopter lesson helicopter lessons helicopter lift helicopter logging flight time helicopter maneuvers helicopter maximum performance take off helicopter mel and mmel helicopter motion sickness helicopter night vision goggles helicopter online flight schools helicopter online ground school helicopter online ground schools helicopter online school helicopter online training helicopter ownership helicopter pedals helicopter pilot helicopter pilot careers helicopter pilot education helicopter pilot flight risk assessment matrix helicopter pilot jobs helicopter pilot lessons helicopter pilot medication use helicopter pilot retirement helicopter pilot schools helicopter pilot training helicopter pilot weather decisions helicopter pilots helicopter pre flight helicopter preflight helicopter preheating helicopter private pilot helicopter private pilot cost helicopter radio call helicopter radio communications helicopter rating helicopter rental helicopter rides helicopter right pedal helicopter rotor blade safety helicopter running landing helicopter safety helicopter safety briefing helicopter safety procedures helicopter safety team helicopter safety tips helicopter schools helicopter seats helicopter set down helicopter set downs helicopter simulaters helicopter solo helicopter solo flight helicopter stuck pedal helicopter student helicopter student pilot helicopter student pilots helicopter students helicopter study notebook helicopter take off helicopter test flight helicopter throttle helicopter timer helicopter torque limits helicopter tour accidents helicopter tour business helicopter tours helicopter training helicopter training blueprint helicopter tree trimming helicopter trimming helicopter utility inspection pilot helicopter weather helicopter wire strikes helicopter written test helicopters heliport accident prevention - what you don't know can kill you! helmets high school graduate helicopter pilot hobbs time hogs hogs hangar hogs mobile app hogs vlog hogs wall of fame hour requirements hover hover pre take off checks hovering hovering autorotations hovering flight hovering with pedals how to become a helicopter pilot icarus iimc imc inadvertent imc inadvertent imc fatal accident review indy 500 instructor instrument instrument helicopter pilot instrument helicopter rating instrument pilot instrument pilot online course instrument pilot rating insurance requirements introduction just breathe ken keller field kenny kenny keller kenny keller creator kneeboard kobe bryant lake tahoe landing landing in snow landings law enforcement pilot learn to fly license live training live training tuesday loss of tail rotor effectiveness loss of tail rotor thrust low g low rotor rpm lte lte loss of tail rotor effectiveness lesson main and tail rotors maneuvers maximum performance takeoff medical cerificate medical certifcate member support mesh michael waltrip money motivation national guard helicopter pilot navy pier new book new york city helicopter tour pilot night flight goggles no no go normal off offer one-on-one online online ground school online helicopter ground school online helicopter ground schools online helicopter school online helicopter schools online helicopter training overwhelm paperback part 141 part 141 flight school part 61 part 61 flight school part 91 passion pencil whipping perfect pinnacle pic pick pilot pilot failures pilot in command pilot jobs pilot motivation pilot passion pilot shortage poh police helicopters post flight checks pre pre-flight checks preflight preflight checklist pressure altitude private private check ride private pilot private pilot 101 private pilot hours private pilot requirements professional helicopter pilot professional pilot pts pumping collective quick stops r-22 r-22 transition r-44 r22 training r22 vs r44 r44 r66 radio radio communication radio communications raido calls remote pilot required helicopter ems hours retreating blade stall ride robinson robinson helicopter robinson helicopters robinson r-22 robinson r-22 preflight robinson r-44 robinson r22 roman atwood rotor tips rotors colliding saftey save school schools schweizer helicopters scud running september11 set settling with power sfar73 awareness training shallow sightseeing signed skylines smile more llc soldier field solo solo flight start steep stirring the pot student student helicopter pilot student helicopter pilots student pilot student pilots study surprises tail rotor dangers tail rotor direction tail rotor failure tail rotor failures tail rotor malfunction tail rotor strikes tail rotor thrust take ten test testimonials the helicopter poscast throttle chop throttle chops tim tucker time tips top top ten check ride tips towered airports training training syllabus transition from r-22 turbine time turkey sandwich up updates vertiport vfr charts vfr in ifr vip vision vortex ring state vuichard recovery method weekend helicopter flying weight limitations written test prep yoda youtuber zero
Stay connected with news and updates!
Call To Action

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras sed sapien quam. Sed dapibus est id enim facilisis, at posuere turpis adipiscing. Quisque sit amet dui dui.

Call To Action