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Power set or thrust set ?
Curious to see, we call out ‘power set’ after take off power is reached and ‘power loss’ in the event of a significant reduction or engine failure Never call out which engine until going through the checklist prior to shutdown What are your call outs in this regime ? |
"80 knots, thrust set."
"Engine failure" or "Engine fire" |
Regional Airline, Turboprop. Normal ops - Capt advances power levers, calls for FO to “set power” via the CTOT system. FO engages the system and responds “Power Set” when it is. (Other call outs omitted for simplicity). |
Power matters for propeller aircraft. Thrust matters for jet aircraft.
Everything after that is nit-pic. |
*cough* TPR *cough*
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Looking back at aircraft flown over the years, it does seem like power was the tuboprop wording "Max Power" and thrust was the jet terminology. Certainly thrust was never used in the turboprop world in my experience.
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Who gives a damm ? The particular bit of mouth music you use in your SOP is of little relevance as long as the engines are correctly set for take off and both pilots understand what has happened. |
You could say almost anything as long as the callout is SOP and indications are correct and checked.
Make turns for V2+20! V2+20 aye, Captain. |
Originally Posted by ImbracableCrunk
(Post 10203586)
You could say almost anything as long as the callout is SOP and indications are correct and checked.
Make turns for V2+20! V2+20 aye, Captain. |
Completely agree with this.
For the sake of the argument though: "Power" for both DHC-6 and -8. Thrust set for A320. So yes, it seems power for turboprops and thrust for jets |
Originally Posted by A and C
(Post 10203472)
Who gives a damm ? The particular bit of mouth music you use in your SOP is of little relevance as long as the engines are correctly set for take off and both pilots understand what has happened. For the sake of the argument though: "Power" for both DHC-6 and -8. Thrust set for A320. So yes, it seems power for turboprops and thrust for jets |
Still on take-off thrust, anyone with an idea why we advance thrust levers to 40%, or around 50% for some jets, before setting the full takeoff thrust? Anyone know of any other reasons apart from engine thermal stabilization and making sure that both engines are spooling at the same rate? I can't seem to find any other reasons online... |
Bear in mind that a turbofan or turbojet engine at high or max thrust is producing zero power if the aeroplane is not moving, unlike a turboprop.
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Originally Posted by dook
(Post 10206856)
Bear in mind that a turbofan or turbojet engine at high or max thrust is producing zero power if the aeroplane is not moving, unlike a turboprop.
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Originally Posted by dook
(Post 10206856)
Bear in mind that a turbofan or turbojet engine at high or max thrust is producing zero power if the aeroplane is not moving, unlike a turboprop.
As far as power transmitted to the airframe, a turboprop at standstill gives the same as a jet at standstill: zero. The power across the shaft (torque X rpm) is quite high, on the other hand. |
Power
We use throttle hold, thrust normal on the 737 |
Originally Posted by LADAN 2ALPHA
(Post 10206834)
Still on take-off thrust, anyone with an idea why we advance thrust levers to 40%, or around 50% for some jets, before setting the full takeoff thrust? Anyone know of any other reasons apart from engine thermal stabilization and making sure that both engines are spooling at the same rate? I can't seem to find any other reasons online... By advancing the thrust levers to some mid-thrust position gets away from that slow idle response regime that is characteristics of turbines. So the procedure is to set a mid N1/EPR, let the engines stabilize, then advance to TO (or engage autothrottle). Simples. |
Originally Posted by LADAN 2ALPHA
(Post 10206834)
Still on take-off thrust, anyone with an idea why we advance thrust levers to 40%, or around 50% for some jets, before setting the full takeoff thrust? Anyone know of any other reasons apart from engine thermal stabilization and making sure that both engines are spooling at the same rate? I can't seem to find any other reasons online... |
We used to use "smoke on" BAC1-11
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Forget power and thrust...just say "Pour on the coals":}
British pilots taught me that one |
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