The following issues are covered: process development frequently lags behind material development, high fabrication costs, flex joints (bellows) - a continuing program, SRM fabrication-induced defects, and in-space assembly will require simplified design

Bennet, Jay

Brower, David

Levine, Stan

Walker, Ray

Wooten, John

English

NASA Technical Reports Server

N91-28244
PRESENTATION 4.2.8
MANUFACTRING ___l___eJ'_
COORDINATOR:
CONTRIBUTORS:
PAUL MUNAFO
JAY BENNET
DAVID BROMER
STAN LEVINE
RAY MALKER
JOHN IdOOTEN
NASA/MSFC
NASA/JSC
LOCKHEED/HOUSTON
NASA/LERC
P&WIdEST PALM BEACH
ROCKidELL/ROCKETDYNE
mACUJUUmeeoc_$_
o
o
o
o
o
PROCESSDEVELOPMENTFREOUENTLYLAGS BEHIND MATERIAL DEVELOPMENT
HIGH FABRICATION COSTS
FLEX JOINTS (BELLONS) A CONTINUING PROGRAM
SliM FABRICATION-INDUCED DEFECTS
IN-SPACE ASSEMBLYMILL REQUIRE SIMPLIFIED DESIGNS
IqlQPOSEDACTTONSIPlWGBAMS
o FABRICATE ADVANCEDCOMPOSITEDEMOARTICLE(S)
o FABRICATEDEMORCS THRUSTERUSING IRIDIUM-COATED RHENIUM
o NEAR-NET SHAPEFABRICATION
0 SMARTMANUFACTURING
o DEVELOPNEMFLEX 30INT
o RHEOLOGYSTUDY OF SOLID PROPELLANTFLOM CHARACTERISTICS
0 COVALENTBONDING PROCESSFOR INSULATOR/PROPELLANT
o. MANUFACTUREOF LARGE INTEGRATEDCOMPONENTS(MODULES)
958
PRL::'CEDI_GPAGE BLANK NOT FILMED
https://ntrs.nasa.gov/search.jsp?R=19910018930 2020-03-19T17:27:59+00:00Z
O_IECIIVES
MIUFAC11IIIIG PROCESSES (CONT'D)
0
0
0
0
0
LARGE-SCALE DEHO ARTICLES
REDUCED FABRICATION COSTS
RELIABLE, EASY-TO-ASSEHBLY FLUID COUPLINGS
IHPROVED SRH PROCESSING
HODULAR COHPONENTS
IHPROVED BELLOMS
aOINING TECHNIQUE FOR RHENIUH THRUSTERS
SIHPLIFIED COUPLINGS
NET-SHAPE HARDHARE DEHO
RHEOLOGY STUDY OF PROPELLANT CASTING
CEP,AHIC HATRIX COHPOSITE ROTOR
1993
1993
1994
1994
1995
1996
954
MAMUFAC111RINGMOCESSES
RECOlllEIlDATIONS/FINDINGS
0 ESTABLISH BROAD-BASED
DEVELOPMENTPROGRAMS
0
0
0
0
0
0
PEER GROUPSTO REVIEW TECHNOLOGY
PROGRAMMANAGERAS FOCAL POINT
FELLOW TECHNOLOGISTS (M'F'G0 MAT'LS,
USERS/DESIGNERS
NDE)
GUIDE THE DEVELOPMENTPROCESS
INDEPENDENT TEAM FOR PROGRAMMATICDECISIONS
FUNCTIONS THROUGHOUTPROGRAM-- FROM ADVOCACYTO
IMPLEMENTATION
MANUFACTURINGPROCESSES
RECOMFIENDATIOIISIFTNDTNGS(CONT'D)
0 IMPLEMENT REVIEW/REPORTING SYSTEM SIMILAR TO THAT NOW
USED IN IR&D
o CURRENTAND PLANNED PROGRAMS
o STANDARD FORMAT
o COULD REPLACE ANNUAL SYMPOSIA
0 INCORPORATE TECHNOLOGYTRANSFER INTO
FOR IMPROVED EQUIPMENT
o WOULD PROVIDE "PEER" SUPPORT
0
0
DEVELOPMENTPLAN
FOR CONTINUED DEVELOPMEN1
WOULDASSURE CONSISTENCY BETWEENDEVELOPED EOUIPMENT
AND USER NEEDS
WOULD PROVIDE FOR ORDERLY, PLANNED TRANSFER OF
RESPONSIBILITY FROM DEVELOPER TO USER
955
/NANUFACTURINGPROCESSE5
RECOIglENDATIONS/FINDINGS (CONT'D)
0 HARDWAREDEMONSTRATION PROGRAMSSHOULD BE
FOR COMPOSITES
PERFORMED
o SHOULD NOT STOP AT THE COUPONLEVEL
o "PHASE 2 OFTEN NOT FUNDED"
o DEMOARTICLES SHOULD BE USED FOR PROPERTY
DETERMINATION
INVOLVE PROPULSION/DESIGN ELEMENTS0
0 PROPULSION SYSTEMS FOR IN-SPACE ASSEMBLY SHOULD BE
DESIGNED TO HINIMIZE COMPLEX OPERATIONS
o MODULARDESIGN
o EASY-TO-ASSEMBLE COUPLINGS
FABRICATE ADVANCEDCOMPOSITE DEMOS
ISSUES
o Full-annie tsbriostLon not denonstrsLed for
advanoed oompoliteJ.
o Proportion obtained from oouponn not
representer/vs.
r CANDZDAT[ PROGaANS
o maroon and marsh materLsls/aompononts.
o Bubooaln foaaLbLILt7 toJta.
o Saloon duo nrtLolt oontLgurntion(s).
o EuLld and teat dens ertLolea.
o DeatruotLve evaluet/on.
_k30 R 0BJECTZVES
% ., ,
o FulZ seals dana &rtlolos for advsnosd
sonpostLtes.
o Component tests.
o Dnatruot/vs evaluation of moohnn/onl
proportLss.
SlrGNZFZCANT HZ LESTONE
o Sateen sad nstah8 1991-1992
o molest demo nrtiolss, 19D3
o Bu/IA and tests lJJi---_
956
FABRTCATIONOF RCS THRUSTERS
ISSUES
o Advsnoed ioptlnisad) thrusters require natorLsl
oombinstlons vhioh ourrently san not be welded.
CANDXDATE PROGRAMS
o Balsas oundLdato natorLals to JoLn to rhenLum.
o Joloot oendldeto ,sLuing presences.
o Fsbriosts sod sva2usto smmplos.
o Transfer £1ndlnga to h&rdvara £sbriost/on
program.
MAJOR OBJECTZVES
o Develop Joining te©hniquos for rhenium
thruJtsro.
f
SCHEDULE
o Nator/sl 0eleotont 1J91
o Presses aelaotLon8 1991
o Sepia tabr/oetion/evsluetion,
o Hardvsre sppl/oatione, 1993
1992
NEAR-NET SHAPE FABRICATION PROCESSES
ISSUES
o BLgh fabrLoJt/on oases for oonplex oonpouents.
r(_ANDZDATE PItOGRANS
O L£tsreturo murray.
e PrioFlt!se nandi4at@ pr¢oeae@s end epplioations.
o Conduot/ovaluete _sbriostLon requirements.
• rabrioeto and Lest oomponant.
• _IOR OBJECTTVES
o 8tats-at-the-ere 0£ near-not shops £ormLng
prooellss.
o Choose nest promisLng applioatLons.
o Demonstration tilts.
o ToohnoXogT transfer.
SCHEDULE
O L/tsrsturs survey* 1991-1992
o rsbriostion .xper/nontst lt92-19D3
o Demonstration tests, Zt,3-1t,4
o mrogrmdm /nplamentttlona* 1,94-----_
957
SHART HANUFACTUR]NGTECHNOLOGY
Issues
o Klgb Iribciottion seats fo: Lov-Voluua-Co_ponauts.
rCANDIDATE PROGR/d4S
n Computer simulation of manufaoturlng pros•ease.
o Natsrisl prone•sing data base.
o Prone, oontrol utilising prooass sensor
taohnology.
o Standardisation ot oomputer language.
o Rapid prototyping by steraollthograph¥.
o flexible prootssing cells.
MODULARASSEMBLY
MAJOR OBJECTIVES
o Coat-effective man•rant•flag in • _ov-volwue
p:oduotion environment.
o _••lytloslly-bsse4 presses dev,lopuent.
o Rapid transition from Zaboratory to
manufaoturing.
r SCHEDULE
o Identity near-term applioJt/onas 1|t2
o BILl/e ALB, BxtarnaI Tank applloltionJ!
o BRZs /_ong ta:m
IOP2---_
ISSUES
o frequent flex Joint (bellovs) probiens.
o Currant manufacturing procedures too oomplex
fez £n-sp•on •asembly.
CANDIDATE P ROGR/ddS
o Zmproved bellows fabrloation.
o Design/Teat snap-together aoupl/ngs.
o Nanufsoturo of large integrated
oompononta (modules).
MAJOR OBJECTIVES
o High-reliability flez Joints.
o Nodular nomponents.
o Simple-to-aseem/_le couplings.
r SCHEDULE
%
o Rollovs fabrioation opti|iledi _tt3
o sLmpl/fled couplLngas 19J4
o Dmmo modular oomponsntat Long term
958
E|
01
18_o
• +q al
0 ,,,,a
_al •
mm¢
a.p¢ III
QA_p¢
_,_0 ,,.q al...,,.0 •
,a.,_ I,o II Oa
_,_ al gl O 0
_ttt, II I,o
• ll.a,..,,,l • 4,11111°"•
• ,"+ '_
1-111 I001
_I .a I,.pl 0 _
_ +o _,_ ,.,,4 _ L, 0
,mi_ k Jm +m _
I_O OOO0
_0_ O,,_ U
vl i +-. I_ IlklO
Ol_,d • •
=o,=
I I_4,,I ,,.p,l _ I I
>+,,+ II I+
0.+4t I.I I 0 q,I
_,; •
0 .,.I II
.I.I I,+_
III _1.1
_ O_
O0 II0 alO
IQ 114_ I_.0 mO
180 _ IIOI .0 _,all
9e I_
+oil OI
_0 lhO
%+ "; .; ,;
=L
_0
01,1
I.I 0
• • _18
) °:
,,_ 0
959


Manufacturing processes

Abstract

Similar works

Full text

Available Versions

NASA Technical Reports Server