Airplanes stay level at higher velocities?

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    Airplanes
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Discussion Overview

The discussion revolves around how a winged airplane maintains level flight at increased speeds, particularly focusing on the relationship between lift, drag, and pilot control mechanisms. It touches on concepts of aerodynamics and flight control surfaces, with implications for both civil and military aircraft.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant questions how an airplane can remain level while increasing speed, noting that increased velocity generates more lift and inquiring about the fate of this lift when a pilot desires to maintain altitude.
  • Another participant mentions that modern aircraft have adjustable wing configurations, such as flaps and slats, which are used during takeoff and landing but are retracted during normal flight to reduce drag.
  • A different participant provides links to resources on flight control surfaces, suggesting that pilots can adjust the pitch of the aircraft using elevators to manage lift and maintain level flight.
  • Further elaboration is provided on how pilots can manipulate the yoke to adjust the elevator flaps, which affects the aircraft's pitch and lift, and mentions the use of trim to sustain these adjustments without continuous input on the yoke.

Areas of Agreement / Disagreement

Participants provide various insights into the mechanisms of maintaining level flight at higher speeds, but there is no consensus on the specific dynamics involved or the implications of increased lift in this context. The discussion remains exploratory with multiple viewpoints presented.

Contextual Notes

Some assumptions about aerodynamic principles and pilot control techniques are present, but the discussion does not resolve the complexities of lift management at varying speeds.

pug
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Hi,

I was wondering- how would a normal winged airplane (jet/propeller) stay level as it increased in speed? In other words, increasing the velocity over an airfoil will generate more lift. But what if a pilot just wants to go faster and not higher? Where does that increased upward force from induced drag over a wing because a pilot wants to go faster go? thanks!
 
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Modern aircraft both civil and military have adjustable wing configuration depending on the present situation.
The most obvious examples being flaps on the rear of the wing and slats on their leading edge.
This is good for take off and landing, but they get tucked back into the main wing structure for normal flight as they just create needless drag on the aircraft.
 
They can push the yoke ('steering wheel') forward, which pushes down the elevator flaps on the tail, which in turn pushes the tail up, thereby pointing the plane's nose down a bit. That reduces the lift from the wings as well as directing some of the propulsion of the jets towards pushing the plane downwards.

If they want to sustain this setting they can change the 'trim', which activates little extra flaps on the ends of the elevator flaps. 'Trim down' makes these little flaps go up, which makes the airflow push the elevators down (hence removing the need to use the yoke to do this), which in turn points the plane downwards.
 

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