A. Samuel Langley achieves the first sustained lighter-than-air, manned powered flight in history with his Aerodrome. B. For standard atmosphere, the pressure is measured, while temperature and density are calculated C. If an airplane is flying at a pressure altitude of 4 km and a temperature altitude of 3.5 km, the actual geometric altitude is between 3.5 km and 4 km. D. For pitot-static probe (as shown in figure), the total pressure is felt at (A) because flow enters the probe at (A).

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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State whether the statement is true or false, and if it is false, correct it.
A. Samuel Langley achieves the first sustained lighter-than-air, manned powered flight in history with his
Aerodrome.
B. For standard atmosphere, the pressure is measured, while temperature and density are calculated
C. If an airplane is flying at a pressure altitude of 4 km and a temperature altitude of 3.5 km, the actual
geometric altitude is between 3.5 km and 4 km.
D. For pitot-static probe (as shown in figure), the total pressure is felt at (A) because flow enters the probe
at (A).
Total pressure
felt here
Static pressure felt here
Pitot-static probe
E. For an airfoil, lift force is perpendicular to relative velocity between fluid and airfoil.
F. For an airfoil, a sudden decrease in drag happens when stall happens.
G. For an aircraft flying with a subsonic speed, the total drag is equal to parasite drag.
Transcribed Image Text:State whether the statement is true or false, and if it is false, correct it. A. Samuel Langley achieves the first sustained lighter-than-air, manned powered flight in history with his Aerodrome. B. For standard atmosphere, the pressure is measured, while temperature and density are calculated C. If an airplane is flying at a pressure altitude of 4 km and a temperature altitude of 3.5 km, the actual geometric altitude is between 3.5 km and 4 km. D. For pitot-static probe (as shown in figure), the total pressure is felt at (A) because flow enters the probe at (A). Total pressure felt here Static pressure felt here Pitot-static probe E. For an airfoil, lift force is perpendicular to relative velocity between fluid and airfoil. F. For an airfoil, a sudden decrease in drag happens when stall happens. G. For an aircraft flying with a subsonic speed, the total drag is equal to parasite drag.
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