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Old 10-06-2015, 07:24 PM   #21
jonboede
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When you pull the stick back to round-out the airplane prior to landing, the term for this is "to flare" or "landing flare".

If you do this with too quickly the aircraft will rise and this is called "ballooning". I am sure this is what you mean by the term "parachuting".

I have 400+ hours in the L-39ZA and am friends with Jan Vlček's son, Václav who was an engine specialist for Aero (now works for Honeywell, I think).

If you are interested, I have some phrasing and grammar suggestions for the manual.

One thing I noticed right away is that the L-29 is called "Dolphin" in the beginning. While no doubt this is correct, I have always seen it spelled Delphin, even in English.
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Old 10-06-2015, 08:09 PM   #22
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Quote:
Originally Posted by jonboede View Post
...
One thing I noticed right away is that the L-29 is called "Dolphin" in the beginning. While no doubt this is correct, I have always seen it spelled Delphin, even in English.
Fixed, thanks!
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Old 10-07-2015, 05:11 AM   #23
Zhivuchiy
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Quote:
Originally Posted by Pikey View Post
OK!
pg 164
While airplane descends towards the ground by pulling the stick create landing angle so that airplanes lands on two main wheels without parachuting.

I think parachuting should be stalling, it could mean ballooning, not sure.

pg 174
When speed of 160-165 km/h reached and stick is pulled all the way back, airplane normally lowers nose and enters parachuting mode with gradual speed increase to 200-220 km/h.

I'm not actually sure what this means but sounds more like stalling which is the context.

As for articles, huge task, every page, most sentences as the author probably knows!
Quote:
Originally Posted by jonboede View Post
When you pull the stick back to round-out the airplane prior to landing, the term for this is "to flare" or "landing flare".

If you do this with too quickly the aircraft will rise and this is called "ballooning". I am sure this is what you mean by the term "parachuting".
In Russian word "parachuting" means that airplane is descending at higher AoA with decreasing/increasing airspeed and increasing vertical speed, thus it is not "flaring" or "balloning". It should be avoided during landing, therefore it is mentioned in sentence: "without parachuting"

While airplane descends towards the ground by pulling the stick create landing angle so that airplanes lands on two main wheels without parachuting.

What is the correct English word for that?

http://www.aviaport.ru/directory/dic...=240&type=Term

For those who can Russian from:
http://flyguy.ru/avia/wp-content/upl...0%BE%D1%80.pdf

Поэтому когда угол атаки достаточно увеличился, подъемная сила становится меньше веса самолета
и он начнет «проваливаться», опуская капот. Если летчик попытается еще увеличить угол атаки, то самолет
станет «проваливаться» плашмя, т. е. парашютировать. Однако при парашютировании самолет трудно
удерживать от кренов. А так как эффективность элеронов на больших углах атаки сильно ослаблена, то
сохранить поперечное равновесие обычно не удается, и самолет сваливается на крыло, стремясь перейти в
штопор.
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Old 10-11-2015, 05:41 PM   #24
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Here is the current updated version of pages 8-68.

Please let us know if you find any errors or odd-sounding sentences.
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Last edited by derelor; 12-05-2015 at 10:06 AM.
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Old 10-16-2015, 09:00 AM   #25
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ED L-39 Flight Manual (PDF), Page 138

Can someone explain what the "take-off mode" exactly is? Never heard that before, could that be a manual error (using "take-off mode" instead of "landing mode")? Thanks in advance.
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Old 10-16-2015, 09:38 AM   #26
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ED L-39 Flight Manual (PDF), Pages 140/141

  • Numbers of both the "Bottles Interconnect Valve" and the "Oxygen Valve" are reversed
  • There is a contradiction between closed and opened valves, which particular valve is meant to be opened or closed?
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Old 10-16-2015, 10:02 AM   #27
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ED L-39 Flight Manual (PDF), Page 141

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This should be read "7. PITOT SYSTEM LINES OPEN, FAILURE SIMULATION SWITCHES OFF" or "7. OPEN / OFF"

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This should be read "9. «0» or «δ»" (depending on navigational desire)

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This should be read "8. ALL ON" or "8. ON" with yellow square around «NETW», «SIGNAL», «ARMS» and «INTERCOM GROUND» switches.
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Last edited by Lino_Germany; 10-16-2015 at 10:09 AM.
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Old 10-16-2015, 01:57 PM   #28
Zhivuchiy
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Quote:
Originally Posted by Lino_Germany View Post
Attachment 124830

ED L-39 Flight Manual (PDF), Page 138

Can someone explain what the "take-off mode" exactly is? Never heard that before, could that be a manual error (using "take-off mode" instead of "landing mode")? Thanks in advance.
Take-off mode here is the position of throttle and engine operation mode, thus should remain take-off mode, but can be rephrased to make it more clear.

Page 89:
To set required engine operation mode in both cockpits on the left panel the throttle is installed. Throttle in front cockpit has engine operation mode markings: «STOP», triangle mark (used when engine has to be started from emergency fuel system), «IDLE», «CR SPEED», «NOM», «TAKE OFF». This throttle has «STOP» latch, used for shutting off the engine.

Last edited by Zhivuchiy; 10-16-2015 at 02:06 PM.
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Old 10-16-2015, 02:23 PM   #29
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Quote:
Take-off mode here is the position of throttle and engine operation mode, thus should remain take-off mode, but can be rephrased to make it more clear.

Page 89:
To set required engine operation mode in both cockpits on the left panel the throttle is installed. Throttle in front cockpit has engine operation mode markings: «STOP», triangle mark (used when engine has to be started from emergency fuel system), «IDLE», «CR SPEED», «NOM», «TAKE OFF». This throttle has «STOP» latch, used for shutting off the engine.
Thank you very much. That's what I needed.

Btw, the throttle is marked with "TAKE UP". Strange.

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Old 10-17-2015, 08:49 AM   #30
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Quote:
Originally Posted by Lino_Germany View Post
Btw, the throttle is marked with "TAKE UP". Strange.
I noticed this, too, but according to the real flight manual and other references (e.g. http://www.aflyer.com/0903_c_planetalk.html) "TAKE UP" seems to be the correct marking.
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