Question:medium

If an aircraft is flying at its Drag Divergence Mach Number and the pilot increases speed slightly, what happens to the fuel consumption?

Show Hint

Beyond the Drag Divergence Mach Number, \[ \boxed{ \text{Wave Drag} \uparrow \Longrightarrow \text{Fuel Consumption} \uparrow } \] because additional engine thrust is required to overcome the rapid increase in drag.

Updated On: Jul 14, 2026

It stays the same because the aircraft is still subsonic
It decreases because the wing becomes more efficient
It increases sharply due to the rapid onset of wave drag and flow separation
It increases linearly at the same rate as in subsonic flight

Show Solution

The Correct Option is C

Solution and Explanation

Was this answer helpful?

Questions Asked in TS PGECET exam

The Eigenvalues of \(3\times 3\) real matrix A are 1, 2, 3 then \(A^{-1} =\)

TS PGECET - 2026
Linear Algebra

View Solution

Let \(A=\begin{bmatrix} 1 & 1 & 0 \\ 0 & 1 & 1 \\ 0 & 0 & 1 \end{bmatrix}\). If \(u_1\) and \(u_2\) are column matrices such that \(Au_1 = \begin{bmatrix} 2 \\ 1 \\ 0 \end{bmatrix}\) and \(Au_2 = \begin{bmatrix} 1 \\ 0 \\ 1 \end{bmatrix}\), then \(u_1 - u_2\) is

TS PGECET - 2026
Matrices

View Solution

Let \(a,b\) and \(c\) be real numbers. Suppose there exist real numbers \(x,y,z\) which are not all zero such that the system of equations \(x = cy + bz\), \(y = cx + az\) and \(z = bx + ay\) has a non-zero solution then \(\left(a+b+c\right)^2 =\)

TS PGECET - 2026
Determinants

View Solution

For the function \(f(x)=\log x\), the number \(c\) strictly between \(e^2\) and \(e^3\) that satisfies \(f'(c)=\dfrac{f(e^3)-f(e^2)}{e^3-e^2}\) is

TS PGECET - 2026
Calculus

View Solution

If an aircraft is flying at its Drag Divergence Mach Number and the pilot increases speed slightly, what happens to the fuel consumption?

Show Hint

The Correct Option is C

Solution and Explanation

Top Questions on Airplane Performance

Questions Asked in TS PGECET exam