Results 61 to 70 of about 38,780 (255)

Advanced ramjet concepts program [PDF]

Uniquely advantageous features, on both the performance and weight sides of the ledger, can be achieved through synergistic design integration of airbreathing and rocket technologies in the development of advanced orbital space transport propulsion ...
Leingang, J. L.
core   +1 more source

Enhancing combustion performance of Al-H2O gelled propellants via polytetrafluoroethylene

Case Studies in Thermal Engineering
Aluminum–water (Al-H2O) propellants are a novel class of solid propellants characterized by low cost and low signature observability. However, the inherently high aluminum content in these formulations often leads to severe agglomeration of aluminum (Al)
Songchen Yue, Jiangong Zhao, Yao Shu, Jian Jiang, Peijin Liu, Wen Ao   +5 more
doaj   +1 more source

Advanced rocket propulsion [PDF]

Existing NASA research contracts are supporting development of advanced reinforced polymer and metal matrix composites for use in liquid rocket engines of the future.
Obrien, Charles J.
core   +1 more source

Experimental validation of rotating detonation for rocket propulsion. [PDF]

Sci Rep, 2023
Bennewitz JW, Burr JR, Bigler BR, Burke RF, Lemcherfi A, Mundt T, Rezzag T, Plaehn EW, Sosa J, Walters IV, Schumaker SA, Ahmed KA, Slabaugh CD, Knowlen C, Hargus WA.   +14 more
europepmc   +1 more source

Historical problem areas lessons learned [PDF]

Historical problem areas in space transportation propulsion technology are identified in viewgraph form. Problem areas discussed include materials compatibility, contamination, pneumatic/feed system flow instabilities, instabilities in rocket engine ...
Fester, Dale A., Sackheim, Bob
core   +1 more source

Real-time fault diagnosis for propulsion systems [PDF]

Current research toward real time fault diagnosis for propulsion systems at NASA-Lewis is described. The research is being applied to both air breathing and rocket propulsion systems.
Delaat, John C., Duyar, Ahmet, Guo, Ten-Huei, Merrill, Walter C.   +3 more
core   +1 more source

A method for comparing the performance of power plants for vertical flight [PDF]

, 1952
A new method of power plant selection for vertical flight is proposed. It can be used to determine whether the performance of a rocket design can be improved by substituting for the rocket motor a different power plant such as a ramjet.
Tsien, H. S.
core   +1 more source

Numerical Method for Chemical Non-Equilibrium Plume Radiation Characteristics of Solid Rocket Motors

Aerospace
The research objectives of engine plume radiation calculation primarily encompass two aspects: (1) addressing the additional heating induced by plume radiation on rocket thermal protection systems and (2) elucidating the variation patterns of spectral ...
Ruitao Zhang, Yang Liu, Yuxuan Zou, Moding Peng, Zilong Wang, Xiaojing Yu   +5 more
doaj   +1 more source

Hybrid rocket performance [PDF]

A hybrid rocket is a system consisting of a solid fuel grain and a gaseous or liquid oxidizer. Figure 1 shows three popular hybrid propulsion cycles that are under current consideration.
Frederick, Robert A., Jr.
core   +1 more source

Initial stress approach-based finite element analysis for viscoelastic materials under generalized Maxwell model

AIP Advances
This paper introduces a conceptual framework for finite element analysis of generalized Maxwell viscoelastic materials based on the initial stress approach.
Xueren Wang, Yanchao Wang, Hongfu Qiang, Jianfang Bai, Chao Luo, Zhipeng Zhao   +5 more
doaj   +1 more source