Regarding Week 4 Assignment Questions

[Aashna Chopra]

Respected Sir,

                        For question 5 in Week 4 regarding the delay of critical Mach number, the fourth option (A,B, and C) has been given as the correct option. However, as per the exercise done in the practice session, only the A option should be correct. I believe that the solution has errors since increasing camber decreases Mcrit and winglets have no effect on that.

Also, the 8th and 10th questions have errors in the options. The options marked correct say that increasing camber and t/c ratio decrease drag which is incorrect. Sir himself said during the lectures that an increase in t/c increases drag and reduces M crit. There are even graphs that prove the same and are taught in the lecture and practice sessions.

Please look into the same and re-evaluate our assignments. Thank you.

Regards,

Aashna Chopra