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The article discusses the development of reusable rocket engines powerful enough to fly a suborbital space plane from London, England to Sydney, Australia in four hours. Topics include the development and testing of a hydrogen-and-air-burning engine, called Sabre, by Reaction Engines of Culham in Oxfordshire, England, Sabre's key technological features, such as a chiller that processes air to burn with hydrogen, and advances in pulse jet engine technology.

The article reports on the plan of low-cost launcher Firefly Space Systems to conduct the first development test of its Alpha vehicle's pressure-fed FRE-2 aerospike rocket engine in 2016. Topics covered include the comment of Firefly co-founder and chief executive officer (CEO) Tom Markusic on the aerospike concept, the design of the engine, and refinement of the FRE-2 configuration and extension of the spike with the help of Texas Advanced Computing Center at the University of Texas at Austin.

The article discusses the development of rocket engine combustion-chamber technology that would lessen the cost of rocket engines through the elimination of regenerative cooling by Orbital Technologies Corp (Orbitec). The company utilized vortex engine technology that was proven successful in an October 2012 rocket test in Mojave, California.

The article focuses on the development of of the launch abort engine (LAE) rocket engine by the aerospace industry firm Pratt & Whitney Rocketdyne. Testing of the engine which began on March 8, 2012 is discussed as part of the planned use of the engine in the CST-100 space vehicle for manned flight being created by Boeing Co for the U.S. National Aeronautics & Space Administration (NASA). It is noted that the LAE had originally been created for space vehicle programs which were canceled.

The article focuses on the aerospace industries firm Space Exploration Technologies Corp. (SpaceX). Lengthy delays in the company's development of a rocket engine for its Falcon 9 launch vehicle are examined in terms of their impact on Space X's ability to fulfill contracts for launching of artificial satellites by 2014.

The article focuses on the success of India in developing and testing a high-thrust cryogenic rocket engine. Topics discussed include the use of the engine for the GSLV Mk-III launch vehicle, the gas generator cycle of the C25 automobile's cryogenic engine, and the fields used during the design of the engine including fluid dynamics, metallurgy, and rotor dynamics.