Keyword: Jet engines

Articles: Robotics, Automation & Control

Assembly is a complicated, sometimes tedious process that often unfolds sequentially along a series of stations. In the manufacture of complex equipment such as jet...

Articles: Manufacturing & Prototyping
Merit Prize Winners, “Create the Future” 2006 Design Contest
Parallel-Plate Motorcycle Frame

Martin O’Toole, Revolution Motorcycles, Doylestown, PA

The concept of the parallel-plate framing system is to eliminate the welded tubular frame. The components are made using 3-axis CNC milling, waterjet, and laser-cutting machines. By...

Articles: Aerospace

In celebration of the 30th Anniversary of NASA Tech Briefs, our features in 2006 highlight a different technology category each month, tracing the past 30 years of the technology, and continuing with a...

Briefs: Software
Modular Aero-Propulsion System Simulation

The Modular Aero-Propulsion System Simulation (MAPSS) is a graphical simulation environment designed for the development of advanced control algorithms and rapid testing of these algorithms on a generic computational model of a turbofan engine and its control system. MAPSS is a nonlinear, non-real- time...

Briefs: Mechanical & Fluid Systems

A proposed data-fusion system, to be implemented mostly in software, would further process the digitized and preprocessed outputs of sensors in a turbofan engine to detect...

Briefs: Physical Sciences

A capability for real-time computational simulation of aeroheating has been developed in support of the Hyper-X program, which is directed toward demonstrating the feasibility of...

Briefs: Software
MPT Prediction of Aircraft Engine Fan Noise

A collection of computer programs has been developed that implements a procedure for predicting multiple- puretone (MPT) noise generated by fan blades of an aircraft engine (e.g., a turbofan engine). MPT noise arises when the fan is operating with supersonic relative tip Mach No. Under this flow...

Briefs: Photonics/Optics

A system has been developed to replace manual measurement of small jet engine blades during safety and performance inspections. The high-speed, automated system consists...

Briefs: Software
Program Predicts Broadband Noise From a Turbofan Engine

Broadband Fan Noise Prediction System (BFaNS) is a computer program that, as its name indicates, predicts the broadband noise generated by the fan stage of a turbofan engine. This noise is the sum of (1) turbulent- inflow noise, which is caused by turbulence impinging on leading edges of...

Briefs: Software
Software for Planning Scientific Activities on Mars

Mixed-Initiative Activity Plan Generator (MAPGEN) is a ground-based computer program for planning and scheduling the scientific activities of instrumented exploratory robotic vehicles, within the limitations of available resources onboard the vehicle. MAPGEN is a combination of two prior...

Briefs: Materials
Scandia-and-Yttria-Stabilized Zirconia for Thermal Barriers

Zirconia stabilized with both scandia and yttria in suitable proportions has shown promise of being a superior thermal-barrier coating (TBC) material, relative to zirconia stabilized with yttria only. More specifically, a range of compositions in the zirconia/scandia/yttria material...

Briefs: Motion Control

A feedback position-control system has been developed for maintaining the concentricity of a turbofan with respect to a nacelle during acoustic and flow tests in a wind tunnel. The...

Briefs: Information Technology

An efficient artificial-intelligence-type algorithm for the propagation of temporal constraints has been devised for incorporation into software that performs scheduling...

Briefs: Materials

"Smart coatings" denotes a class of high-temperature-resistant, multilayer, thin (total thickness < 10 µm) films that contain predominantly planar layers of sensor circuitry...

Briefs: Photonics/Optics

A prototype laser ignition system has been developed for use in a hydrogen/oxygen-burning spacecraft thruster. The system could readily be adapted to terrestrial applications in which...

Briefs: Software
Program Computes Tone Fan Noise From a Turbofan Engine

TFaNS is a computer program that predicts the tone noise that emanates from the fan stage of a turbofan engine. With the help of this program, engineers working to reduce fan tone noise can study the effects of proposed design changes and are thus more likely to be successful in their...

Briefs: Software
Program Predicts Jet Noise

MGBK is a computer program that predicts the mixing noise and the shock noise generated by a subsonic or low-supersonic jet, given input data on the mean flow and turbulence fields as predicted by a suitable state-of-the-art computational fluid dynamics (CFD) program. More specifically, MGBK can be regarded as a...

Briefs: Mechanical & Fluid Systems
Software Predicts Noise From Rotor-Wake/Stator Interactions

V072 is a computer program that predicts the noise generated by the interaction between the rotor-blade wake (fan wake) and the stator vanes of a turbofan engine. The program is a combination of subroutines from prior NASA programs, with many added features.

Briefs: Electronics & Computers

Fatigue cracks and plastic deformation of parts in jet aircraft engines could be detected, even during engine operation, by use of proposed in situ monitoring devices called "wireless...

Briefs: Mechanical & Fluid Systems
A 3D Navier-Stokes CFD Code for Analysis of Turbomachinery

The ADPAC software is a computational fluid dynamics (CFD) code for analysis of flows in turbomachines. The outstanding feature of ADPAC is the ability to solve the Navier-Stokes equations for complex three-dimensional (3D) flow fields that include multiple flow paths, and the modeling...

Briefs: Materials
Update on SiC Fiber/[MoSi₂-Matrix/Si₃N₄ Particle] Composites

A report presents updated information on the developments described in "MoSi2-Based Composite Materials for Aircraft Engines" (LEW-16617),NASA Tech Briefs, Vol. 22, No. 9 (September 1998), page 62. To recapitulate: Hybrid composites of (1) SiC-based fibers within (2)...

Briefs: Information Technology

Mechanical System Design/Analysis Tool (MSAT) is a user-friendly software system that facilitates and accelerates the processes of synthesizing and analyzing designs of mechanical systems. MSAT is...

Briefs: Information Technology

Parallel Visual 3 (pV3) is an interactive computer program that provides selected displays of data generated in numerical simulations - especially simulations that involve parallel...

Briefs: Robotics, Automation & Control

The Dryden Flight Research Center (DFRC) has been a partner in many uninhabited-aerial-vehicle (UAV) test programs. Our participation has largely been in the areas of...

Briefs: Software
Software for Analysis and Design of Turbomachinery Seals

Several computer programs, denoted collectively as the "CFD Seal Analysis Industrial Codes," have been developed to enable rapid parametric analyses and optimization of designs of a variety of turbomachinery seals. These programs could be used to design the seals that will be needed in...

Briefs: Manufacturing & Prototyping

A process for the fabrication of improved high-temperature fiber-optic sensor heads has been proposed. Fiber-optic sensor heads that can withstand hot, dirty, noisy environments are...

Briefs: Materials

MoSi2-based composite materials are among the advanced materials undergoing development as potential strong, stiff, lightweight replacements for the nickel-based superalloys...