Mechanical and Aerospace Engineering

Introduction

 * An Introduction to Mechanical Engineering by Jonathan Wickert

Statics

 * Engineering Mechanics: Statics by Hibbeler
 * Engineering Mechanics: Statics by Meriam and Kraige (supplement)
 * Mechanics (Dover Books on Physics) by Hartog (Also covers basic dynamics)

Dynamics

 * Engineering Mechanics: Dynamics by Hibbeler
 * Engineering Dynamics: A Comprehensive Introduction by Kasdin and Paley
 * Fundamentals of Applied Dynamics by Williams Jr

Mechanics of Materials

 * Mechanics of Materials by Hibbeler
 * Mechanics of Materials by Gere and Goodno (or the older editions by Gere and Timoshenko)
 * Mechanics of Materials by Popov
 * Strength of Materials (Dover Books on Physics) by Den Hartog
 * Advanced Strength of Materials (Dover Civil and Mechanical Engineering) by Den Hartog
 * History of Strength of Materials by Timoshenko (Interesting read to go along with the above)

Material Science

 * Fundamentals of Materials Science and Engineering - Callister and Rethwisch (Crystallography)
 * Mechanical Behavior of Materials - Dowling (Excellent resource on material failure)
 * The New Science of Strong Materials or Why You Don't Fall through the Floor - Gordon

Fluid Mechanics

 * Fluid Mechanics: Fundamentals and Applications by Çengel and Cimbala
 * Fluid Mechanics by Kundu and Cohen

Thermodynamics

 * Thermodynamics: An Engineering Approach by Çengel and Boles
 * Fundamentals of Engineering Thermodynamics by Moran, Shapiro, Boettner, and Bailey
 * Fundamentals of Thermodynamics by Borgnakke and Sonntag

Mechanical Design

 * Fundamentals of Machine Component Design by Juvinall and Marshek
 * Materials Selection in Mechanical Design by Ashby
 * Shigley's Mechanical Engineering Design by Budynas and Nisbett
 * Machine Design: An Integrated Approach by Norton
 * DANotes: Design and Analysis of Machine Elements by Douglas Wright
 * Machine Elements in Mechanical Design by Mott, Vavrek and Wang

Heat Transfer

 * Heat and Mass Transfer: Fundamentals and Applications by Çengel and Ghajar
 * Fundamentals of Heat and Mass Transfer (or Introduction to Heat Transfer) by Incropera, DeWitt, Bergman, and Lavine
 * A Heat Transfer Textbook (Dover Civil and Mechanical Engineering) by John H Lienhard V and John H Lienhard IV

Vibrations

 * Engineering Vibration by Inman
 * Mechanical Vibration: Analysis, Uncertainties, and Control by Benaroya
 * Mechanical Vibrations by Rao
 * Fundamentals of Vibrations by Meirovitch
 * Mechanical Vibrations by Den Hartog (Dover Civil and Mechanical Engineering)

Manufacturing

 * Fundamentals of Modern Manufacturing: Materials, Processes, and Systems by Groover
 * Manufacturing Processes for Engineering Materials by Kalpakjian and Schmid
 * DeGarmo’s Materials and Processes in Manufacturing by Black and Kohser

Aerodynamics

 * Fundamentals of Aerodynamics by Anderson
 * Foundations of Aerodynamics: Bases of Aerodynamic Design by Kuethe and Chow

Computational Fluid Dynamics

 * Computational Fluid Dynamics: The Basics with Applications by Anderson
 * Computational Fluid Mechanics and Heat Transfer by Pletcher, Tannehill and Anderson

Orbital Mechanics

 * Fundamentals of Astrodynamics (Dover Books on Aeronautical Engineering) by Bate, Mueller, and White (Classic from 1971)
 * Orbital Mechanics for Engineering Students by Curtis
 * Fundamentals of Astrodynamics and Applications by Vallado
 * An Introduction to the Mathematics and Methods of Astrodynamics by Battin

Space System Design

 * Spacecraft Systems Engineering by Fortescue, Stark, and Swinerd
 * Space Vehicle Design by Griffin and French
 * Space Mission Engineering: The New Space Mission Analysis and Design by Wertz, Everett, and Puschell
 * The Space Environment: Implications for Spacecraft Design by Tribble

Propulsion

 * Mechanics and Thermodynamics of Propulsion by Hill and Peterson
 * Rocket Propulsion Elements by Sutton and Biblarz
 * Modern Engineering for Design of Liquid Propellant Rocket Engines by Huzel and Huang
 * Blazing the Trail: The Early History of Spacecraft and Rocketry by Gruntman (Interesting and well written text to go with the above)

Flight Mechanics

 * Mechanics of Flight by Phillips
 * Aircraft Flight Dynamics by Stengel
 * Airplane Stability and Control: A History of the Technologies that Made Aviation Possible by Abzug and Larrabee

Aircraft Design

 * Aircraft Design: A Conceptual Approach by Raymer
 * Aircraft Structures for Engineering Students by Megson
 * Aircraft Structures (Dover Books on Aeronautical Engineering) by Peery
 * Analysis and Design of Flight Vehicle Structures by Bruhn
 * Airframe Structural Design: Practical Design Information and Data on Aircraft Structures by Niu

Compressible Fluid Mechanics

 * Modern Compressible Flow: With Historical Perspective by Anderson
 * Introduction to Compressible Fluid Flow by Oosthuizen and Carscallen
 * Elements of Gasdynamics (Dover) by Liepmann and Roshko

Internal Combustion Engine

 * Engineering Fundamentals of the Internal Combustion Engine by Pulkrabek
 * Internal Combustion Engine Fundamentals by Heywood

Combustion Theory

 * An Introduction to Combustion: Concepts and Applications by Turns
 * Principles of Combustion by Kuo
 * Combustion by Glassman, Yetter, and Glumac
 * Combustion Theory by Williams

Control Systems Engineering
See the EEE recommendations: Control Theory

Advanced Dynamics
See also: Analytical Mechanics
 * Intermediate Dynamics for Engineers: A Unified Treatment of Newton-Euler and Lagrangian Mechanics by O'Reilly
 * Classical Dynamics (Dover Books) by Greenwood
 * Advanced Dynamics by Greenwood
 * Tensor Calculus and Analytical Dynamics by Papastavridis
 * Analytical Mechanics: A Comprehensive Treatise on the Dynamics of Constrained Systems by Papastavridis

Acoustics

 * Fundamentals of Engineering Acoustics by Kinsler
 * Acoustics by Beranek