Updated: Question in GATE 2012 Aerospace Engineering Paper with Solution

July 04, 2012

A question in GATE 2012 Aerospace Engineering Paper with Solution has been updated:

Common Data for Questions 48 and 49:

A wing and tail are geometrically similar, while tail area is one-third of the wing area and distance between two aerodynamic centres is equal to wing semi-span (b/2). In addition, following data is applicable: $\in_a = 0.3,\ C_L = 1.0,\ {}^CL_a$ $= 0.08 / deg., \bar c$ = 2.5m, b = 30m, ${}^CM_{ac} = 0, \ n_t = 1.$ The symbols have their usual aerodynamic interpretation.

The maximum distance that the centre of gravity can be behind aerodynamic centre without destabilizing the wing-tail combination is

3.4 m
1.4 m
0.4 m
2.4 m