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   The beginning is always a delicate matter.
   The beginning is always a delicate matter.
    
    
   It often does take several restarts and new approaches.
   It has been true for each one of us debuting and struggling with our plane,
   This has been true for this writing...
   the same it has been to design the LILO-LOWI-Adrenaline "parcours"<ref>[1]parcours              - french word for track, journey, route, course and even
                              of a new urban sport.</ref> ...
  and the writing of this article just took several missed approaches !
    
    
   It has been true for the creation of the LILO-LOWI-Adrenaline "parcours" ...
   We all have been at that point, is it not ?
  and it is a stressing truth for all the pilots debuting and struggling with their plane.
    
    
   We all have been at that very start point, is it not ?
   Landing ... We all did manage to bring the plane back on the ground ...
    
    
  Trying to land in a satisfying manner, failing, and trying again, repeatedly.
 
  CFIT(Controlled Flight Into Terrain) on final approach, bumpy landing, complicating
  with Tortoise oscillations(1), Runway Excursions, are quite constant.
   [[File:RWY-Excursion at VQPR-292-978×549.png|978x549|frameless|Excursion at Paro (Buthan)]] [[File:800_Thirsty_Horses_-_screen-009.png|978x549|frameless|Missed Taxiway]]
   [[File:RWY-Excursion at VQPR-292-978×549.png|978x549|frameless|Excursion at Paro (Buthan)]] [[File:800_Thirsty_Horses_-_screen-009.png|978x549|frameless|Missed Taxiway]]
  '''Wrong Mind - Wrong Landing'''
  - "...oh, it is just a simulator... With a bit of training, we should get there..."
 
  But despite my best will and patience it was not "getting there" !
    
    
   Several users from, Flightgear Community come spontaneously to help with advises
   But doing it in a way that leave us satisfied demand a bit more practice
   and demonstrations. I have review my techniques and improved my skills. So I can
   and knowledge too.
  only thank them for the care and time spent on me.
     
  But I was still needing to understand the why...


   '''Never give up!'''
   '''Never give up!'''


   I did not give up.
   I did not give up and tried with patience many flying configurations, weather,  
 
   weight... The results was continuing average.
  Modifying flying configurations, weather, weight, retrying, questions  and  new
   searches led me to find an amazing explanation by a retired flight instructor !
    
    
   Crazy simple sketches and just a few words but very clear !  
   My search for explanation led me to find an amazing explanation by a retired flight
  instructor ! Crazy simple sketches and just a few words but very clear !  
    
    
   Any aerospace engineer student will surely study the same with a greater detail.
   Of course, any student aerospace engineer will surely study the same with way higher
  But pilots and engineers are different and it this is where Rob explanation earn  
  detail. But pilots and engineers are different in this, and it is where Rob's
  a big point.
  explanation earn a strong point !


   '''Landing is not continuing to descend until the ground - it is a controlled stall'''
   '''Landing is not <big><big>continuing</big></big> to descend until the ground - it is a <big><big>controlled stall</big></big>.'''


   My 1st reaction : "...no... no ways !"
   My 1st reaction was : "...no... no ways !"
    
    
   But the doubt got quickly away !
   But the doubt got quickly away !
    
    
   Figure out a little motorboat changing direction :  
   Figure out a little motorboat changing direction :  
   (top view)
   (view from top)
    
    
   [[File:Landing - Explanation - 1.png|361x264px|frameless|Landing - Explanation - 1]]
   [[File:Landing - Explanation - 1.png|361x264px|frameless|Landing - Explanation - 1]]
Line 72: Line 57:
   · Air    : even more elastic, more drift for the wished track.
   · Air    : even more elastic, more drift for the wished track.


   (Side view)
   (view from Side)
    
    
   Same thing,
   Same rule,
   the plane do not '''''"change  immediately  direction"''''' because of the ground.
   the plane do not '''''"change  immediately  direction"'''''  
  because of the ground.
    
    
   [[File:Landing - Explanation - 2.png|361x264px|frameless|Landing - Explanation help - 2]]
   [[File:Landing - Explanation - 2.png|361x264px|frameless|Landing - Explanation help - 2]]
    
    
   The plane accumulate energy during the descent. When he touch the ground,  
   The plane accumulate energy during the descent.  
   this energy tend to push the plane <big><big>'''''lower then the ground !'''''</big></big>
  When he touch the ground,  
   the not completely "used" descent energy  
  will tend to push the plane <big><big>'''''lower then the ground !'''''</big></big>
 
  Is it bad ?
  Well, that is why you have gear shock absorbers... but :
 
  Gear shock absorbers cannot absorb any infinite amount of energy,
  they have limits.
    
    
   Gear shock absorbers will try to absorbing this '''''excess''''' of energy.
   If the "remaining" energy is '''''still too much''''' :
   But, what if this energy is stronger then the gear shock absorber ?
  - or you have a crash and a belly landing ;
   - or a "bump bump bump" and then probably a crash too.<ref>[2]Tortoise oscillations - Succession of quick oscillations where the plane will
                            become quickly impossible to control and almost ever
                            resulting in a crash.</ref>
    
    
   [[File:Landing - Explanation - 6.png|361x264px|frameless|Landing - Explanation Help - 6]]
   [[File:Landing - Explanation - 6.png|361x264px|frameless|Landing - Explanation Help - 6]]
    
    
   Case 1. - The shock absorber and or the landing gear crash.  
   If this happen, FIREWALL! and Go Around !<ref>[3]"Firewall! Firewall!  - Instruction/information given by one pilot to the other
            You have a belly landing.
                              where the thrust lever  is  beaten at the physical edge,
                              resulting  in  engines delivering  the absolute maximum
                              thrust power !
                              It is an extreme evasive maneuver that should only last
                              a few seconds. (about 6 ~ 8 for most engines).
                              It is one step beyond then the  "unleash  the beast" !
                              Engines must come back to normal thrust levels in order
                              to avoid irreversible damages.</ref>
  If you do not, and you survive, you are going
  to be known the rest of your life as '''''Captain Kangourou'''''.
    
    
   Case 2. - The shock absorber release so many energy that plane start bumping
   Another crash will happen if you stall from too high.
            As soon as you have cognition of the bump up - do not hesitate :
            - Firewall ! Firewall ! (2)
            - Go Around !
            - Detente.
            You are going to be known as '''''Captain Kangourou''''' for the rest of
            the times, but your passengers, your crew, you plane and you, are
            going to be safe.
 
  A quite equivalent disastrous result will be caused by a too high stall.
    
    
   [[File:Landing - Explanation - 5.png|361x264px|frameless|Landing - Explanation Help - 5]]
   [[File:Landing - Explanation - 5.png|361x264px|frameless|Landing - Explanation Help - 5]]
    
    
   The plane stall from an height that still demand too much absorption by the shock  
   Gear shock absorbers can <big><big>'''''not'''''</big></big> absorb this.
  absorber, resulting in a more hazardous belly landing.


  <big><big>'''The Proper way'''</big></big>


   '''The Proper way'''
   Rob was writing something like ... :
 
   ----------------------------------
  Exhaust the descent energy before to touch ground.
   "This energy that in the air is your friend,  
 
  on the ground become your enemy".
  About this, Rob wrote :
   Leave this energy there, exhaust it !"
   ---------------------
   "This energy that in the air is your friend and keep you alive, on the ground become
  you enemy".
   "You can not just leave it there. You have accumulated it - you have to exhaust it !"
    
    
   [[File:Landing - Explanation - 3.png|361x264px|frameless|Landing - Explanation Help - 3]]
   [[File:Landing - Explanation - 3.png|361x264px|frameless|Landing - Explanation Help - 3]]
    
    
   Only then you become able to land ...and by landing i do mean, able to brake, steer
   That is why we "round up", "we retard", "we flare".
   and control your plane on land !
   Landing is never direct.
    
    
   So, which is the proper height to induce the stall ?
   When descent energy is "ended" then you become
 
  able to land, brake, steer and control your plane...
   "Any height that can be handled by the landing gear shock absorber."
 
  <big><big>'''So, what is the "proper height" to stall ?'''</big></big>
 
   "Any height that can be handled by the landing  
  gear shock absorber."
   "But, ideally, from 'Zero' feet above RWY."
   "But, ideally, from 'Zero' feet above RWY."
    
    
   [[File:Landing - Explanation - 4.png|361x264px|frameless|Landing - Explanation Help - 4]]   
   [[File:Landing - Explanation - 4.png|361x264px|frameless|Landing - Explanation Help - 4]]   
    
    
   Thank you Rob.
   The butter landing !


   '''A new approach'''
   <big><big><big>'''''Conclusion'''''</big></big></big>


   So, I was failing to have proper landings because  I was looking for a solution  in
   Stall '''''is''''' at the "edge" of the "flying envelope", '''''not''''' in the middle of the safe average.
  the average of the flying conditions whereas it was at the extreme edge, where  the
  plane start to stall.
    
    
   And this, for me, have been game changing.  
   That is why my landings was not so good.
  Knowing '''''the edge''''', the limits of our plane '''''is crucial'''''.
    
    
   I have learned the only way to master my chosen plane was exploring its limits.
   And this led me to the idea of a place where we could try, discover and test our plane, going at the edge, to the limit.
 
  Very low level flight, at '''''relatively high speed''''', we have tried, the '''''Adrenaline is at the <big>Rendez-vous</big> !'''''


   <big><big><big>'''''How is "this" related with LILO-LOWI-Adrenaline and Fun ?'''''</big></big></big>
   <big><big><big>'''''LILO-LOWI-Adrenaline was born ! '''''</big></big></big>


   '''LILO-LOWI Adrenaline''' is a theater where to explore and train your pilot skills "at the edge."
   <big><big>'''''But why a challenge for small planes and not big planes or military planes ? '''''</big></big>
 
 
   "...No one will do this "in the real life..."
   Does theses names from the real life are known to you  ? :
 
  Actually, this is not so sure.
    
    
   In real life, pilots have to train to react appropriately in extreme situations.
   Robert (Bob) Pearson, Tadeusz Wrona, Jerzy Szwarc, Chesley Sullenberger,  
  And yes, you already got it, they do it not in the real plane but in simulators !
   Jeffrey Skiles, Carlos Dardano and Dionisio Lopez.
 
   Well, here in Flightgear, it does seems we already have the simulator.
  What still was missing was a theater to train at the edge...
    
    
   Now, with LILO-LOWI-Adrenaline, we have it !
   They should !
 
  One could argue within himself, "yes but for the small planes only..."
    
    
   Well, small planes is the best way to learn the "habits" that save your life
   These are all heroes where with their outstanding pilot skills they have saved
   when later you fly a "big plane".
   lives !
    
    
  All the real life pilots :
   - "Gimli Glider, Captain Robert (Bob) Pearson, Air Canada flight 43, at Manitoba,  
   - "Gimli Glider, Captain Robert (Bob) Pearson, Air Canada flight 43, at Manitoba,  
       zero loss and minimal damage to the plane ;  
       zero loss and minimal damage to the plane ;  
Line 173: Line 163:
     on the grass levee at Michoud (New Orleans) May 1988 (Taca flight 110) ;
     on the grass levee at Michoud (New Orleans) May 1988 (Taca flight 110) ;
    
    
   all off them have, of course several things in common, but one have called for
   There are of course several more of them.
  my attention : countless hours of flight in small plane with the habit to take
  their small plane at the edge.
 
  If you still have doubts, think, is their out any aviation company or flight
  school that spent heavy money to train edge or extreme situations ?
 
  Not really, some company do it but they have started only after already lost
  so many lives !
 
  So, this is what have driven me.
 
  The creation of a theater where we all could exercise at the extreme and
  with a bit of chance and perseverance become better "virtual" pilots.
 
  My 1st idea was to call it  '''''"Disengage Auto-Pilot"''''' .
 
  But the first tries run by myself and others in the meanwhile I was designing the
  parcours(3) have revealed to be so fun and thrilling that the name come by itself
    
    
   '''''LILO - LOWI - Adrenaline'''''
   But what all off them have in common, is the countless hours of flight in small
  plane with the habit to take their small plane at the edge !


   <big><big>'''''Rendez-vous at the Start !'''''</big></big>
   <big><big>'''''Rendez-vous at the Start !'''''</big></big>
Line 202: Line 175:
   LoCall
   LoCall


  1) Tortoise oscillations - Succession of quick oscillations where the plane will
                              become quickly impossible to control and almost ever
                              resulting in a crash
  2) "Firewall! Firewall!  - Instruction/information given by one pilot to the other
                              where the thrust lever  is  beaten at the physical edge,
                              resulting  in  engines delivering  the absolute maximum
                              thrust power !
                              It is an extreme evasive maneuver that should only last
                              a few seconds. (about 6 ~ 8 for most engines).
                              It is one step beyond then the  "unleash  the  beast" !
                              Engines must come back to normal thrust levels in order
                              to avoid irreversible damages.
  3) parcours              - french word for track, journey, route, course and even
                              of a new urban sport.


[[User:LoCall/LILO-LOWI-Adrenaline/Download | Next page : LILO-LOWI-Adrenaline - Download  > ]]
[[User:LoCall/LILO-LOWI-Adrenaline/Download | Next page : LILO-LOWI-Adrenaline - Download  > ]]

Revision as of 10:14, 31 May 2020

LILO-LOWI-Adrenaline

LILO-LOWI-Adrenaline

Climb from "Corna" to "Liscidini"

Clock Around Santa Giustina Lake

3/4 Clock Around "Santa Giustina Lake" 

  Intro - Where it all have Started

  The beginning is always a delicate matter.
  
  It has been true for each one of us debuting and struggling with our plane,
  the same it has been to design the LILO-LOWI-Adrenaline "parcours"[1] ...
  and the writing of this article just took several missed approaches !
  
  We all have been at that point, is it not ?
  
  Landing ... We all did manage to bring the plane back on the ground ...
  
  Excursion at Paro (Buthan) Missed Taxiway
  
  But doing it in a way that leave us satisfied demand a bit more practice
  and knowledge too.

  Never give up!

  I did not give up and tried with patience many flying configurations, weather, 
  weight... The results was continuing average.
  
  My search for explanation led me to find an amazing explanation by a retired flight 
  instructor ! Crazy simple sketches and just a few words but very clear ! 
  
  Of course, any student aerospace engineer will surely study the same with way higher 
  detail. But pilots and engineers are different in this, and it is where Rob's
  explanation earn a strong point !

  Landing is not continuing to descend until the ground - it is a controlled stall.

  My 1st reaction was : "...no... no ways !"
  
  But the doubt got quickly away !
  
  Figure out a little motorboat changing direction : 
  (view from top)
  
  Landing - Explanation - 1
  
  blue - the wished direction ;
  red  - the obtained track.
  
  · Ground : a car would obtain an almost immediate "turn".
  · Water  : water is  elastic, you "drift" to the "wished" track.
  · Air    : even more elastic, more drift for the wished track.

  (view from Side)
  
  Same rule,
  the plane do not "change  immediately  direction" 
  because of the ground.
  
  Landing - Explanation help - 2
  
  The plane accumulate energy during the descent. 
  When he touch the ground, 
  the not completely "used" descent energy 
  will tend to push the plane lower then the ground !
  
  Is it bad ?
  Well, that is why you have gear shock absorbers... but :
  
  Gear shock absorbers cannot absorb any infinite amount of energy, 
  they have limits.
  
  If the "remaining" energy is still too much :
  - or you have a crash and a belly landing ;
  - or a "bump bump bump" and then probably a crash too.[2]
  
  Landing - Explanation Help - 6
  
  If this happen, FIREWALL! and Go Around ![3]
  If you do not, and you survive, you are going 
  to be known the rest of your life as Captain Kangourou.
  
  Another crash will happen if you stall from too high.
  
  Landing - Explanation Help - 5
  
  Gear shock absorbers can not absorb this.

  The Proper way

  Rob was writing something like ... :
  ----------------------------------
  "This energy that in the air is your friend, 
  on the ground become your enemy".
  Leave this energy there, exhaust it !"
  
  Landing - Explanation Help - 3
  
  That is why we "round up", "we retard", "we flare". 
  Landing is never direct.
  
  When descent energy is "ended" then you become 
  able to land, brake, steer and control your plane...

  So, what is the "proper height" to stall ?

  "Any height that can be handled by the landing 
  gear shock absorber."
  "But, ideally, from 'Zero' feet above RWY."
  
  Landing - Explanation Help - 4   
  
  The butter landing !

  Conclusion

  Stall is at the "edge" of the "flying envelope", not in the middle of the safe average.
  
  That is why my landings was not so good. 
  Knowing the edge, the limits of our plane is crucial.
  
  And this led me to the idea of a place where we could try, discover and test our plane, going at the edge, to the limit.
  
  Very low level flight, at relatively high speed, we have tried, the Adrenaline is at the Rendez-vous !

  LILO-LOWI-Adrenaline was born ! 

  But why a challenge for small planes and not big planes or military planes ? 

  Does theses names from the real life are known to you  ? :
  
  Robert (Bob) Pearson, Tadeusz Wrona, Jerzy Szwarc, Chesley Sullenberger, 
  Jeffrey Skiles, Carlos Dardano and Dionisio Lopez.
  
  They should !
  
  These are all heroes where with their outstanding pilot skills they have saved
  lives !
  
  - "Gimli Glider, Captain Robert (Bob) Pearson, Air Canada flight 43, at Manitoba, 
     zero loss and minimal damage to the plane ; 
  - Captain Tadeusz Wrona (+officer Jerzy Szwarc) - belly landed the B767 with no
    injuries to anyone (LOT Polish Airlines Flight 16, Nov 2011) ;
  - Captain Chesley Sullenberger (+officer Jeffrey Skiles) accomplishing that 
    controversial but impossible landing on the Hudson river (US Airways Flight 
    1549);
  - Captain Carlos Dardano (+officer Dionisio Lopez) achieve a dead stick landing
    on the grass levee at Michoud (New Orleans) May 1988 (Taca flight 110) ;
  
  There are of course several more of them.
  
  But what all off them have in common, is the countless hours of flight in small
  plane with the habit to take their small plane at the edge !

  Rendez-vous at the Start !
START
  Have fun, 
  LoCall


Next page : LILO-LOWI-Adrenaline - Download >

  1. ↑ [1]parcours - french word for track, journey, route, course and even of a new urban sport.
  2. ↑ [2]Tortoise oscillations - Succession of quick oscillations where the plane will become quickly impossible to control and almost ever resulting in a crash.
  3. ↑ [3]"Firewall! Firewall! - Instruction/information given by one pilot to the other where the thrust lever is beaten at the physical edge, resulting in engines delivering the absolute maximum thrust power ! It is an extreme evasive maneuver that should only last a few seconds. (about 6 ~ 8 for most engines). It is one step beyond then the "unleash the beast" ! Engines must come back to normal thrust levels in order to avoid irreversible damages.
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