Lift required to sustain a refueling jet

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In summary, a jet is being refueled by a tanker mid-air at a fuel flow rate of 20kg/s and a velocity of 30m/s. The fuel enters the aircraft at an angle of 30 degrees and has a density of 700kg/m^3. The question asks for the additional lift needed to overcome the additional force, which can be calculated using the equation F=ma and considering momentum and impulse.
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max1546
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Homework Statement


A jet is refueled in mid-air by a tanker. The fueling boom enters the aircraft at an angle of 30 degrees from its flight path. The fuel flow rate is 20kg/s at a velocity of 30m/s with respect to the two aircrafts. The density of the fuel is 700kg/m^3
What is the additional lift needed to overcome the additional force?


Homework Equations


F= ma

The Attempt at a Solution


As Force is kg m/s^2, wouldn't the force be mass flow x velocity?
Then just do sin 30 to the force to get the y component.
But somehow I think I've got the wrong method...
 
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  • #2
Think about this in terms of momentum and impulse.
 

FAQ: Lift required to sustain a refueling jet

What is lift and why is it important for a refueling jet?

Lift is the force that acts on an aircraft and helps it stay in the air. It is generated by the wings of the aircraft and is essential for the refueling jet to maintain its altitude and maneuverability.

How is the lift required for a refueling jet calculated?

The lift required for a refueling jet is calculated by taking into account factors such as the weight of the jet, the altitude and air density, and the desired speed and maneuverability. This calculation is typically done by the aircraft's designers and engineers.

Can the lift required for a refueling jet change during flight?

Yes, the lift required for a refueling jet can change during flight depending on several factors. For example, as the jet consumes fuel during flight, its weight will decrease and the lift required will also decrease. Additionally, changes in altitude and air density can also affect the lift required.

How does the angle of attack impact the lift required for a refueling jet?

The angle of attack is the angle at which the wings of the jet meet the oncoming air. As the angle of attack increases, the lift generated by the wings also increases. However, at a certain point, the angle of attack can become too high and cause the airflow to become turbulent, resulting in a decrease in lift. Therefore, the angle of attack must be carefully controlled to maintain the necessary lift for the jet.

Are there any technologies or techniques used to help a refueling jet maintain lift?

Yes, there are several technologies and techniques used to help a refueling jet maintain lift. One such technology is the use of flaps and slats on the wings, which can be extended to increase the surface area of the wing and generate more lift. Additionally, the pilot can also adjust the jet's speed and angle of attack to control the lift. Advanced flight control systems and autopilot systems also aid in maintaining the necessary lift for the jet.

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