Pratt & Whitney Rocketdyne (PWR) is the premier liquid rocket engine company in the world.

PWR was formed in 2005 when Pratt & Whitney acquired Rocketdyne from The Boeing Company and merged it with the Pratt & Whitney Space unit. Over the years, our engineers have published many technical papers on rocket engine design and analysis, some of which are available here.

Propulsion
Engineering

Aerospike Engine Control System Features and Performance
Airbreathing Hypersonic Propulsion at Pratt & Whitney - Overview
Characteristics of the T-220HT Hall-Effect Thruster
Deep Throttle Turbopump Technology Design Concepts
Designing for the Long Term
Development and Application of TCAT - Thrust Chamber Analysis Toolkit
Development and Characteristics of the Russian / American RD-180 Rocket Engine
Development of Reusable Engines
Distributed Power Architecture for Electric Propulsion
Engine Performance with Plume Spectrometry
Evolved Expendable Launch Vehicle System - RS-68 Main Engine Development
Future Evolution of Space Transportation Propulsion - A View From Rocketdyne
Highly Operable Propulsion Technologies and Propulsion System Approaches for Operationally Responsive Space System
Inducer Back Swirl
Integrated System Test of an Airbreathing Rocket (ISTAR)
International Liquid Rocket Cooperation, The Case of the RD-180 Engine
ISTAR - Integrated System Test of an Airbreathing Rocket
Liquid Rocket Engine Nozzles
Main Engine Prototype Development for 2nd Generation RLV, RS-83
Nozzle Design
POGO
Probabilistic Methodology
Propulsion for the 21st Century - Cost Driven RS-68
Propulsion for the 21st Century - RS-68
Real Time Failure Detection Algorithm for the Space Shuttle Main Engine
RS-84 Rocket Engine Overview
Scramjet Engines Enabling The Seamless Integration of Air & Space Operations
Space Shuttle Main Engine - 30 Years of Innovation
Space Shuttle Main Engine (SSME) Options for the Future Shuttle
Space Shuttle Main Engine (SSME) Options for the Future Shuttle
Space Shuttle Main Engine – Thirty Years of Innovation
Supersonic Turbine Nozzle Flow Measurements
The Heart of the Matter
TRITON: A TRImodal capable, Thrust Optimized, Nuclear Propulsion & Power System for Advanced Space Missions
Turbopumps for Liquid Rocket Engines
Validation for Turbopump Hydrodynamic Scaling Technique
X-33 Attitude Control using the XRS-2200 Linear Aerospike Engine

Advanced Gasification Systems Development (AGSD) program
Balanced Shaker and Sensor Placement for Modal Testing of Large Flexible Structures
Brayton Power Conversion System Technology Development
Cold Spray Processing of DRA
Fluorescent Penetrant Inspection Probability of Detection Demonstrations Performed for Space Propulsion
Hybrid Viscous Unstructured CFD Mesh Technology
Improving Space Flight Hardware Safety and Reducing Cost of Thermal Vacuum Testing Through Automation
Integrated Health Management and Adaptive Control Systems
International Cooperation in Space Launch Propulsion
Lessons Learned on the Trail to Knowledge
Linking Risk Management to Other Program Management Processes
Measurement and Control Systems
Modal Identification of Lightly-damped, Highly Symmetrical Bladed Disks
Multiple Event Tree Probabilistic Risk Assessment
Nondestructive Testing and Material Process Readiness Levels
Non-Obstructive Particle Damping Experience and Capabilities
Overview of the Robust Design Computational System (RDCS) A Collection of Tools To Enable Low Risk Designs
Recovery From One Failure During Early Assembly Stages of the International Space Station