GATE_AE_2027_MOCK_01_Q06
GATE 2027 Aerospace Engineering All-India Master Mock 01 (Foundation & Standard Core Calibration)
MCQ · 2 Marks
General Aptitude • Verbal Aptitude • Reading Comprehension
Read the following excerpt: "Supercritical airfoils delay the onset of transonic wave drag by flattening the upper surface, which weakens the strength of the supersonic shock wave and moves it closer to the trailing edge. However, this geometry creates substantial aft camber, producing a large nose-down pitching moment that demands larger trim download on the horizontal stabilizer." Which of the following is logically entailed by the passage?
(A) Supercritical airfoils inherently eliminate all trim drag penalties on aircraft.
(B) The delayed shock wave on a supercritical wing comes at the aerodynamic cost of increased nose-down pitching moment.
(C) Supercritical wings avoid the formation of any supersonic flow over their upper surface.
(D) Horizontal stabilizers on supercritical aircraft never generate negative lift.
Answer Key:
B
Step-by-Step Verified Solution
### Solution: The passage explicitly contrasts delayed transonic wave drag with the drawback of substantial aft camber causing a large nose-down pitching moment. Correct: B.