NASA Technical Reports Server (NTRS) 19930017769: Nuclear Engine System Simulation (NESS) version 2.0

20 Pages·0.6 MB·English

by  NASA Technical Reports Server (NTRS)

N93-2695 J
NUCLEAR ENGINE SYSTEM SIMULATION (NESS)
VERSION 2.0
-O__-
22JANUARY 1992
PRESENTED BY:
DENNISG. I'tL_CCaOAUDCHmsrnmEM. SCtmlL
SCIENCE AI'PLI(:^I'IONS IN'I'EI_AI'IONAL CORPOI_'IION
AL,OC_mqUz, NM 87123
ANt)
I,YMAN J. Pk-I'ItOSKV
We2;'tINGIIOUSEF.tzCn'PaCCO_POP.A'nON
MADISON,PA 15663
PRUtKI'tD ffl':
1992 NUCLEAR |)ROI'III.510N - "I'ECIINICAL INTF.RCtIAIqGE MEE'UlUG
NASA _ms RZStARCHC_rrzt
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TOPICS
• BACKGROUND
• FEATURES
• COMPARISONS
• CONCLUDING REMARKS
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NTP: Systems Modeling
BACKGROUND
NUCLEAR THERMAL PROPULSION (NTP) ENGINE
SYSTEM ANALYSIS PROGRAM DEVELOPMENT
- Overall Objective -
Develop a Stand-alone, Versatile NTP Engine System
Preliminary Design Analysis Program (%ol) to Support Ongoing and Futme
SEi Engine System and Vehide Design Efforts
- Perform Meaningful (Accurate). Preliminary Design Analysis -Tank to Nozzle
- Have Flexibility:
-- ToItandleaWide RangeofDesignOptions toSupport PrdiminaxyDesignActivities
-- ToBeEasilyUpIpMcdinTennsofAnalysisCapability
- BeAvailabletotheSEICommunity;Possiblyasan IndustryStandard
- BeDone Promptlyand Efficiently
- lnidal Effort:
- Ftx'taedonNERVAflqERvA Dtd,rative, _,lid.Cote NTP S_tems
-- 13aml on Up_mdJnll gAIC'* H'l'P ItLIt.S Deilsn Cktde by lttcotporttht s WwtJn_oulte'$
ENABLERReactorandInternalShieldModels
NP-TIM-92
...................... in .......................................... .._ll......
NUCLEAR THERMAL PROPULSION (NTP) ENGINE
SYSTEM ANALYSIS PROGRAM DEVELOPMENT
- Observations -
No NTP-Sl_cific Code isCommonly Available for Use in
SEI Propulsion and Vehicle Design Studies
Versatile, Verified NTI' Analysis Design "lbol Could Be of Great
Use to the Community
it is Envisioned That NESS laOne KeyElement in Developing a
Robust (Industry Standanl "l_pe) Analysis Calmbilit 7(Design
Workstation) to Snplmrt NTP Development Into the 21st Century
Enhancements inTerms of Additional Technology/Design Options
and/or Analysis Capabilities Possible With the NTP ELESModel
I
NUCLEAR THERMAL PROPULSION ENGINE
DEVELOPMENT ANALYSIS CAPABILITY REQUIREMENTS
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NP-TIM.92
N'rP: Systems Modeling t_o_
TEAM RESOURCES USED TO SUPPORT
NESS DEVELOPMENT
! I ._ II
EXPANDED LIQUID ENGINE SIMULATION (ELES)
COMPUTER MODEL
- Background-
Its Major Objective isto Conduct Prdiminary System Design Analysis of
Liquid Rocket Systems and Vehicles
Delivered byAemjet in the Early 1980's (1981-1984) Under
Sponsorthip by the Air Force Rocket Propuhion Laboratory
(Now Phillips Laboratory)
-Ova $1.2 Million Spent bythe AirFon:e initsDcvdopment
-AvailaM¢'l"hroughthe Air Porte
• ELES Has Been Well Distributed and Accepted W_thin the Propulsion
Community for Preliminary Liquid Propahlo. System Design Aaal_is
• ELES Draws on Past Fzperie,ce and Knowledge From Aemjet and Others
-Earamlmnes Aerojet Va_*Engineerl.g Baseand Expertise inLiquid PropuMon
- ln.hou_ Eapctie.nce Included i. the Modal
- Has Legacy to Eapetts Active in the Community
_ lxtarao#ll)ltali;arOatalla_
NP-TIM-92 669 NTP: Systems Modeling
EXPANDED LIQUID ENGINE SIMULATION (ELES)
COMPUTER MODEL (Cont.)
- Background-
ELES Model Uses Mechanistic asWell as Empirical Models of
ComponenudSubsystems
The Model IsWell Stmct.red, User Friendly, Easily Modified, and
Documented
A High Degree of Vedfication has Been Done on the ELES Code
r
• EI.FS IsaCA..prehensive lud.str? Type,
Standard Code Avaihble to Perform
Preliminary Sready-State Liquid Propulsion
DesignAnalysis
- A key Starting Point in Initial NTP Engine
System Development
III IIII
ELES VERIFICATION EXAMPLES
CENTAUR D1-T STAGE
• Nil OE'LTA (OELTA 2/40 STAGE)
• TI_&NGT_F:I _TITN4 3RO STAGE}
• CIENTAUIql4M.-IO DT.I _I'AGE IIT_IWN
• SPACE ,.qlIU'FIL_ MAIN FN_I_
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aDiTAUIM_-IO ObT YlIRIIFICJLTI_4 SUIdARY
ACTQ_ GAIC ACIlW_NC
Room JoeNI 6T 4.1 N3
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Stage Lengih 3m 3513
En_me _ 444 _44e,
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670
N']'P: Syslems Modeling NP-T'lM-92
NESS PROGRAM DEVELOPMENT EVOLUTION
INI'I'IAI,SAIC
VNYTP-1E9I.8E9S9D0EVELOPMEWI" "1
JP/199|
jNF.SS.VEKSI()N 1.0
J F.N_,P,I FR IFNGINE
J SY_I'IEM
NF.SS-VERSION 2.o l
I
IBL¢'I_, Vcnfions of NESS - VeJsions I&2 Ff 1993
Are Successfully in Operation At NASA l,ewis NF.SS I'UBIJC RF.I.FA.SE I
Developmem Phase
TIIROUGll COSMIC l
-PC =nd Vax Vcrtiom ]
8Fleace Apl_l_stlens
1 __ Inmtlallenal uorperallcn
PAST NTP ELES ANALYSIS CODE MODIFICATIONS
AND VERIFICATIONS
SAMPLEOUTPUT
• ELES-NTP VersionDevelopedand
Verilied
- ModificationsPedormed
- lnoorpomtlonofH2andCO Property mILIMatI tIoi oi iIsI ii t._il_I 0Ittloi•
"rabies .. pam,_tol0.
- Monopmpellanl Turbopump-led ====" =., |.|1'.2| : I..i... |_ •
SystemModlficaliona E!i.-"'_=._.I._.I...Ol.I UI |tl •
- ReaclorWeightandDimension ltm _ _e lie ¢
CorrelationsAdded
w _o m e
- Oif-Dodgn EngineOperation
capsetity "" ..i.i.
-V_ficatlon Conducted
P2P' -
- Rockeldyne Performance and
WeightDam IIll *NI I.I N I I•
- Westlnghou_ NERVA Data
- Compared withNASA90-Day Sludy
Input
- MuchDeveloped UnderSAIC In-House ii 0,rest,m ¢,,_ tta=m|m
FundSlX_aorsh¢ g==.=......
m leimm l_
$fJ¢_¢i APII#¢$1tonl ll_k_Jll II
I _III__.. Inletnlfl¢lllll CIItp¢tsllon
NP-TIM-92 671 NTP:Systems Modeling
........ ....................... 1............... I I I I ....
GENERAL NTP ENGINE SYSTEM FEATURF_
MODELED BY NESS
Incorporates aNear-'lhrm Solld-Cme NERVA/
NERVA-Derii-.itive Reactor Designs
-W_llilgllouic ENAIII.FR I&ll NI'P RelClor I)elinl
- Strong Westinghouse R-I Reactor Delilln l.qpc#
• Incorporates State-of-the-Art Propulsion System
Tedmologies and Design Prictlca
/ ____ l,O_lmIi_lli_l _tl/Illilll,m iiS, I!!il----__J
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REPRESENTATIVE NTP EXPANDER, GAS GENERATOR, AND
BLEED ENGINE SYSTEM CYCLES MODELED BY NESS
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NTP: Syitmm Modeling
.- . I I I
NESS PROGRAM OVERVIEW
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NP-TIM-92
O.qC_.NAL PAOE IS
OF POOR QUALITY
TOP-LEVEL KEY NESS FLAGS AND INPUT VARIABLES
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EN ABLER (NERVA TYPE) NUCLEAR THERMAL
ROCKET ENGINE
IUiq*OIl"
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NllP: SystemsMod_ns 67_ NP-TI_-92
._+___i ____ ..................... !
PRISMATIC FUEL ELEMENTS AND SUPPORTS
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REACTOR FUELD AND SUPPORT ELEMENT PARAMETERS
Fuel Elelml Gompollllon (31rlphl|e Composite Clrblde
TO_ Flange('K) 2200-2500 2500-2900 2900-3300
Fuel "Coiled Plullcle UC, ZIC ' IU,Zr) C
Solid SOlullon ind Clrbon 8olld Solutk)n
CostinO ZlC' ZrC --
Unlullld _Jp/x)rl Element Graphite "2rC-GwaphlloComposJIo Z,,C
CompoCtlo.
Unfullled Ell)mini C_llng' ZrC ZrC --
NP-TIM-92 67522 NTP: Modeling