16.511  Aircraft Engines and Gas Turbines

Lecture notes

Dear Class,

I have posted L20 annotated lecture notes on Stellar. I double-checked the slide 12 equation and that is right as written in the lecture.

Regards,

Steven Barrett

Announced on 26 November 2013  3:51  p.m. by Steven Barrett

Design Exercise

Dear Class,

The 16.511 Design Exercise has been posted on Stellar at https://stellar.mit.edu/S/course/16/fa13/16.511/courseMaterial/topics/topic4/resource/16.511_-_F2013_-_DX-v1/16.511_-_F2013_-_DX-v1.pdf

Please email me your report on your design work by the end of 12/6/13. Note that as this is a design exercise you are expected to make judgements about engineering constraints and analytical assumptions (often based on previous designs).

Regards,

Steven Barrett

Announced on 23 November 2013  6:56  p.m. by Steven Barrett

Exam #2 graded papers now available from Melanie Burliss in 33-322

You will see the raw score, scaled score (out of 25, as this is worth 25%), and current overall grade based on the two exams (80% = A, 70% = B, 60% = C).

Regards,

Steven Barrett

Announced on 19 November 2013  5:05  p.m. by Steven Barrett

Example Questions 5 Q1(c)

Dear Class,

A question came up on the first line of the solutions to EQ#5 Q1(c). I used tabulated V/sqrt(cp T0) for this, which you may not have. Alternatively you can get V2 as follows:
-- At M =0.75, T/T0 = 0.9. You can get this from the T/T0 = fn(M) chart (or from the equation).
-- Then T2 = 0.9 * T02 = 0.9 * 1500 = 1350 K
-- As M = 0.75 = V2 / sqrt(gamma R T2) => V2 = 0.75 * sqrt(1.4 * 287 * 1350) = 552.4 m/s

Regards,

Steven Barrett

Announced on 13 November 2013  7:09  p.m. by Steven Barrett

Data and formulae sheet for exam

Dear Class,

I have posted on Stellar the formulas and data that you will be given in tomorrow's exam. These are almost the same as last time with the addition of a Q(M) chart and some additional thermodynamic relations.

Regards,

Steven Barrett

Announced on 13 November 2013  5:37  p.m. by Steven Barrett