Document
c GN&C GRC team members.
es with the GRC short term e presented.
ified model is presented along with ons may be available in electronic simplified dynamic models applicable m modeling goals). The procedures step process and the task plan -step process and the task plan Dzu K. Le (GRC) Peter Ouzts (GRC) Paul Raitano (GRC)
Thomas J. Stueber
) or in paper form in published documents. Finally, roadmaps …) or in paper form in published documents. Finally, roadmaps ,…
Glenn Research Center at Lewis Field
Simplified Model Development
MatLab,
Hypersonic Vehicle Propulsion System
This document addresses the modeling task plan for the hypersoni This document addresses the modeling task plan for the hypersonic GN&C GRC team members. The overall propulsion system modeling task plan is a multi The overall propulsion system modeling task plan is a multi- identified in this document addresses the first steps (short ter identified in this document addresses the first steps (short term modeling goals). The procedures and tools produced from this effort will be useful for creating and tools produced from this effort will be useful for creating simplified dynamic models applicable to a hypersonic vehicle propulsion system. The document continu to a hypersonic vehicle propulsion system. The document continues with the GRC short term modeling goal. Next, a general description of the desired simpl modeling goal. Next, a general description of the desired simplified model is presented along with simulations that are available to varying degrees. The simulati simulations that are available to varying degrees. The simulations may be available in electronic form (FORTRAN, CFD, form (FORTRAN, CFD, MatLab outlining possible avenues towards realizing simplified model ar outlining possible avenues towards realizing simplified model are presented.
Dzu K. Le (GRC)
Peter Ouzts (GRC)
Thomas J. Stueber Ph: (216) 433-2218
Paul Raitano (GRC)
FAX: (216) 433-8643
http://www.grc.nasa.gov/WWW/cdtb
thomas.j.stueber@nasa.gov
Glenn Research Center at Lewis Field
Simplified Model Development
Hypersonic Vehicle Propulsion System
Fore body compression surface, Inlet, Isolator Combustor, and Expansion Nozzle.
– – – – –
Propulsion system primary Components:
•
Models, Objectives, Admissible controllers, and Controller performance Metrics.
– – – – Four Basic Elements Necessary to Design Controllers:
•
Hypersonic Project GNC
Hypersonic Project GNC
Albertson, C.W., Emami, S., and Trexler, C.A., “Mach 4 Test Reuslts of a Dual-Flowpath, Turbine Based Combined Cycle Inlet,” AIAA 2006-8138.
Interested in Controlling the Hypersonic Vehicle Propulsion system. Gain insights in Propulsion-Control and Flight-Control coupling issues.
TBCC Concept TBCC Concept
• •
Billig, F.S., “Tactical Missile Propulsion,” Progress in Astronautics and Aeronautics Volume 170, “Tactical Missile Design Concepts,” AIAA, ISBN 1- 56347-188-3, 1996.
Hypersonic Propulsion System
Turbojet or afterburning turbojet Dual-Mode Combustor another is a critical and enabling procedure for the hypersonic vehicle.
The Vision vehicle: • • Transition from one flow path to Low-speed path normal shock position. Low-speed path axial pressure distribution. Low-speed path axial temperature distribution. High-speed path axial pressure distribution. High-speed path axial temperature distribution.
• • • • •
Inlet
Inlet
Model
Model
Simplified Inlet Model Structure
Free-stream conditions. Low-speed path cowl position. Low-speed path ramp position. Low-speed path bleed flow. Low-speed path back flow rate. High-speed path cowl position. High-speed path back flow rate.
• • • • • • • Cowl Cowl Throat Throat Ramp Ramp Reflective Shock Reflective Shock Oblique Shock Oblique Shock Shoulder Shoulder Oblique Bow Shock Oblique Bow Shock Oblique Cowl Lip Shock Oblique Cowl Lip Shock
Engine
Engine
A/B Turbojet A/B Turbojet SRGULL SRGULL Forebody comp. Surface • • • •
Simulations Simulations
Analytical Resources
GHAME AFRL GHAME AFRL ,
Vehicle
Vehicle
• • • •
Simulations
Simulations
Heiser, .
Inlet
Inlet
, Cole, Melcher, ,
Supersonic
Supersonic
Simulations
Simulations
NACA reports, NACA reports, Compressible Flow Compressible Flow Toolbox, Toolbox, Sorensen, Sorensen, Anderson, Anderson, Willoh Willoh, Cole, Melcher, and Johnson, and Johnson, Amin Amin, Pratt and Pratt and Heiser Kumar, Kumar, Pinckney, and Pinckney, and Chicatelli Chicatelli.
• • • • • • • • • • • • • • • • • • • • LAPIN LAPIN SRGULL SRGULL • • • •
Electronic
Electronic
Resources
Resources
, Cole, SRGULL, Willoh Melcher, and Johnson; LAPIN; and Amin CFD SRGULL, Willoh, Cole, Melcher, and Johnson; LAPIN; and Amin CFD • • • • • • • • • • Turbojet Turbojet Afterburning Afterburning Vehicle Body Vehicle Body , Cole, Willoh Willoh, Cole, Melcher, and Melcher, and Johnson; Johnson; LAPIN; and LAPIN; and Amin Amin CFD CFD • • • • • • • • .
Tools
Tools
Propulsion Modeling Roadmap
Propulsion Modeling Roadmap
Procedures Procedures
Setup, Setup, Run, and Run, and Data reduction. Data reduction. MatLab/Simulink MatLab/Simulink. Documentation. Documentation.
and Modeling
and Modeling
• • • • • • • • • • NACA reports NACA reports Compressible Flows Toolbox Compressible Flows Toolbox • • • •
IMX)
-IMX)
drag
Elasticity Aspects
-Elasticity Aspects
Servo-
-Servo
Aero
Aero-
bending Large Scale Mode Transition Inlet (L
Large Scale Mode Transition Inlet (L-
bending
aero load dynamics
Task 3 Task 3 GNC GNC Controller Controller Vehicle, and Vehicle, and Controllers: Controllers: Fore body compression, Inlet, Isolator, Combustor, and Expansion Nozzle Fore body compression, Inlet, Isolator, Combustor, and Expansion Nozzle Overall Propulsion, Overall Propulsion, Component Controllers • • • • • Component Controllers • • • • • Integrated Propulsion Integrated Propulsion flight trajectory Control flight trajectory Control Task 2 Task 2 Objectives, Objectives, Admissible Admissible Controllers, and Controllers, and Controller Controller performance performance Metrics Metrics Identify: • • • Identify: • • •
Hypersonic Project GNC Overview
Hypersonic Project GNC Overview
Develop Tools and Procedures
Task 1 Task 1 Model Model Simplified Models Simplified Models Fore body compression, Inlet, Isolator, Combustor, and Expansion Nozzle Fore body compression, Inlet, Isolator, Combustor, and Expansion Nozzle Component Models • • • • • Component Models • • • • • Vehicle Dynamics Model Vehicle Dynamics Model Integrated Propulsion Integrated Propulsion Integrate Propulsion and Integrate Propulsion and
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Simplified engine simulations. L-IMX Schedule and Controller designed. Inlet controller coupled with engine control.
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6 6 4. 5. 6.
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3 3
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Long Term Schedule (L-IMX)
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Integrated inlet system with engines.
L-IMX: Performance, operability, and mode transition testing. C-IMX: Control research and development. CCET: High speed flow path simulations. Low-speed flow path simulations. Simplified L-IMX computational models.
L-IMX
C-IMX CCET
1. 2. 3. 1. 2. 3.