• Question Cagtegory: Aeronautics
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• ## What are form drag and profile drag ?

What are form drag and profile drag ?

Asked on 8th September 2021 in
• 12 views
• ## Find and compare the lift slopes for a straight wing and a swept wing with a half-chord line sweep of $$30^{\circ}$$.

A finite wing with an elliptical lift distribution has an aspect ratio of $$6$$. The airfoil of the wing has …

Asked on 12th August 2021 in
• 74 views
• ## Considering, $$\tau = 0.1$$, find the angle of attack for the wing. Also, find the induced drag for the airplane, if span efficiency factor is $$0.6$$.

An airplane is cruising at $$50\,m/s$$ at standard sea level in straight and level flight. The airplane has a wing …

Asked on 12th August 2021 in
• 90 views
• ## Find the coefficient of lift and induced drag coefficients for this wing at an angle of attack of $$6^{\circ}$$.

A finite wing has aspect ratio of $$6$$ and taper ratio of $$0.8$$. The airfoil constituting this wing has a …

Asked on 11th August 2021 in
• 112 views
• ## 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 …

Asked on 22nd July 2021 in
• 109 views
• ## 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 $$10$$.

Find the velocity of air in the test section of a low speed open circuit subsonic wind tunnel which has …

Asked on 15th June 2021 in
• 130 views
• ## Find the lift and wave drag coefficients for an infinitely thin flat plate.

Find the lift and wave drag coefficients for an infinitely thin flat plate at an angle of attack of $$8^{\circ}$$ …

Asked on 26th March 2021 in
• 137 views
• ## Find the gliding distance of an aircraft.

Find the gliding distance of an aircraft flying at an altitude of $$1500\,m$$ with a maximum lift to drag ratio …

Asked on 3rd February 2021 in
• 160 views
• ## Find the total drag of an airplane.

Find the total drag of an airplane flying at a velocity of $$90\,m/s$$ with $$L/D$$ ratio maximum. Airplane is weighing …

Asked on 3rd February 2021 in
• 122 views
Calculate the pressure coefficient at a point on the airfoil where the pressure is $$8.9 \times 10^4\,N/m^2$$. Airfoil is …