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An airfoil has a lift coefficient and moment coefficient of \(-0.35\) and \(-0.050\) about quarter-chord at \(-6^{\circ}\) angle of attack. The airfoil has lift coefficient and moment coefficient of \(0.70\) and \(-0.040\) at an angle of attack of \(4^{\circ}\) about the same quarter chord. Find the location of the aerodynamic center.
An airfoil has a lift coefficient and moment coefficient of \(-0.35\) and \(-0.050\) about quarter-chord at \(-6^{\circ}\) angle of attack. …
aerodynamic center

airfoil

lift coefficient

techAir Asked on 22nd July 2021 in Aerodynamics.
- 1K views
- 1 answers
- 0 votes
A NACA 0012 airfoil having a chord of \(2.3\,m\) is in an airstream velocity of \(70\,m/s\) at standard sea level conditions. Find the angle of attack for this airfoil, if the lift per unit span produced is \(1400\,N\).
A NACA 0012 airfoil having a chord of \(2.3\,m\) is in an airstream velocity of \(70\,m/s\) at standard sea level …
airfoil

airspeed

lift

lift coefficient

lift force

Worldtech Asked on 22nd July 2021 in Aeronautics.
- 1K views
- 1 answers
- 0 votes
Can an airfoil fly upside-down ?
A positively cambered airfoil has a zero-lift angle of \(-3.5^{\circ}\). The lift slope for this airfoil is \(0.12\) per degree. …
airfoil

lift

lift and drag

lift coefficient

lift force

Kisan Kumar Asked on 13th July 2021 in Aerodynamics.
- 2K views
- 1 answers
- 0 votes
Find the circulation around a spinning circular cylinder in free stream flow of velocity \(40\,m/s\) at a standard sea level conditions, if the lift produced by the cylinder is \(8\,N/m\) of span.
Find the circulation around a spinning circular cylinder in free stream flow of velocity \(40\,m/s\) at a standard sea level …
Circulation

lift

Kumar59 Asked on 16th June 2021 in Aerodynamics.
- 915 views
- 1 answers
- 0 votes
An airplane is flying at an velocity of \(100\,m/s\). Find the pressure coefficient at a point on the surface of the wing where the flow velocity is \(140\,m/s\).
An airplane is flying at an velocity of \(100\,m/s\). Find the pressure coefficient at a point on the surface of …
Aircraft performance

Airplane design

airspeed

Worldtech Asked on 16th June 2021 in Aerodynamics.
- 957 views
- 1 answers
- 0 votes
A pitot tube of an airplane which is flying at an standard sea level measures a pressure of \(1.09 \times 10^{5} N/m^{2}\). Find the velocity of the airplane.
A pitot tube of an airplane which is flying at an standard sea level measures a pressure of \(1.09 \times …
airspeed

incompressible flow

techAir Asked on 16th June 2021 in Aerodynamics.
- 1K views
- 1 answers
- 0 votes
Find the velocity of air in the test section of a low speed open circuit subsonic wind tunnel which has an inlet -to-throat area ratio of \(10\). The U-tube mercury manometer read as a height difference of \(10.5\,cm\) for the pressure difference between the inlet and the test section of the wind tunnel.
Find the velocity of air in the test section of a low speed open circuit subsonic wind tunnel which has …
airspeed

incompressible flow

Kisan Kumar Asked on 15th June 2021 in Aeronautics.
- 1K views
- 1 answers
- 0 votes
Find the velocity of an airplane flying at a standard sea level, if the static pressure at the throat of venturi is \(100 000 N/m^{2}\).
Find the velocity of an airplane flying at a standard sea level, if the static pressure at the throat of …
airspeed

incompressible flow

Kumar59 Asked on 15th June 2021 in Aerodynamics.
- 1K views
- 1 answers
- 0 votes
In a flow field, the velocity components are, \(u=\left ( 6x^{2}y+t \right ),v=\left ( 3yx+t^{2}+3 \right )\) and \( w=\left ( 3+3t^2y \right )\). Find the velocity vector and its magnitude at a point \(p\left ( 3,2,4 \right )\) at \(t=5\) . Units of \(x,y,z\) are in meters and time \(t\) is in seconds.
In a flow field, the velocity components are, \(u=\left ( 6x^{2}y+t \right ),v=\left ( 3yx+t^{2}+3 \right )\) and \( w=\left …
fluids

Worldtech Asked on 6th May 2021 in Fluid mechanics.
- 1K views
- 1 answers
- 0 votes
A velocity field is given by \(V= 5xyi+8txzj+xzk\). Find the angular velocity about the\( z\)-axis, acceleration and the vorticity at point \((2,3,5)\) at \(t = 3\). Units of \(x,y,z\) are in meters and time – \(t\) is in seconds.
A velocity field is given by \(V= 5xyi+8txzj+xzk\). Find the angular velocity about the\( z\)-axis, acceleration and the vorticity at …
fluids

techAir Asked on 5th May 2021 in Fluid mechanics.
- 1K views
- 1 answers
- 0 votes

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