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Full-Text Articles in Mechanical Engineering

The Influence Of Mixing Duct Length And Phase Of Flight On Wall Temperatures Of A Rocket Based Combined Cycle Engine In Ejector And Air-Augmented Modes, Jonathan Grow Jul 2023

The Influence Of Mixing Duct Length And Phase Of Flight On Wall Temperatures Of A Rocket Based Combined Cycle Engine In Ejector And Air-Augmented Modes, Jonathan Grow

Doctoral Dissertations and Master's Theses

Rocket Based Combined Cycle (RBCC) engines have been theorized as a possible means of powering launch vehicles and high-speed atmospheric vehicles. By incorporating aspects of both air-breathing and rocket propulsion, RBCC engines promise up to a 230 % increase in specific impulse over traditional chemical rocket propulsion by entraining a secondary flow of atmospheric air and mixing it with the exhaust of a rocket motor. Students within the Embry-Riddle Future Space Explorers and Developers Society (ERFSEDS) identified a
problem of excessive heating and structural failure of the mixing duct during launch and transonic flight of a student-built flight test vehicle. …


Nasa Student Launch - Payload, Eli Kirk Jan 2023

Nasa Student Launch - Payload, Eli Kirk

All Undergraduate Projects

A team of mechanical engineering, physics, and computer science students from Central Washington University have constructed a fully functional subscale model rocket to be flown at the NASA Student Launch competition. The rocket’s payload was designed to open the nose cone and take a photo of the rocket’s surroundings after descending from the launch. Smaller parts were constructed through machining and 3D printing that will be added to the purchased major component, the linear actuator, in order to perform the required tasks. These tasks are signaled by an attached electronics board, which will receive an RF command remotely, execute code, …


Nasa Student Rocket Launch, Ethan Stapleton Jan 2023

Nasa Student Rocket Launch, Ethan Stapleton

All Undergraduate Projects

The Rocketry Payload team consisting of Kallysta, Eli and Ethan needed to build a payload that flew in a rocket also built by the team. After the rocket has landed, a camera is deployed outside the rocket through a 3-inch gap created by a linear actuator. The camera must rotate 360 degrees and take photos of the surrounding area. The entire system must weigh less than 4.4 pounds as well. The team designed this system using their knowledge obtained through the Mechanical Engineering program at Central Washington University. It was important for them to keep in mind that the system …