Mo de lling o f Pro pe lla nt Ma na g e me nt Syste ms in E a - PowerPoint PPT Presentation

Mo de lling o f Pro pe lla nt Ma na g e me nt Syste ms in E a rly-Pha se L a unc he r De ve lo pme nt E UCASS 2015 Va ne ssa Cla rk Ge rma n Ae rospa c e Ce nte r I nstitute o f Spa c e Syste ms Spa c e L a unc he r Syste m Ana lysis L inze r Str. 1 28359 Bre me n Ge rma ny

www.DL R.de / SART • Cha rt 2 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 Co nte nts  I ntro duc tio n  PMP Mo de lling Appro a c h  Sa turn-V a nd AS506  Ve hic le Ove rvie w So urc e : NASA  Missio n Ove rvie w  Sizing Re sults  L a yo ut  Ulla g e E vo lutio n a nd NPSP  Co nc lusio n a nd Re c o mme nda tio ns

www.DL R.de / SART • Cha rt 3 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 I ntro duc tio n Motivation Cryo g e nic Sta g e s  Hig h spe c ific impulse ; inc re a se pa ylo a d ma ss So urc e : NASA Cryo g e nic ta nks: c ritic a l te c hno lo g ie s  T ypic a l inte g ra l struc tura l ro le ; la rg e influe nc e o n o ve ra ll de sig n So urc e : NASA Pro pe lla nt ma na g e me nt  Cruc ia l func tio na l ro le ; hig hly se nsitive Sa turn-V:  We a lth o f sta g e a nd flig ht da ta (e .g . AS506)  Simila r ye t hig hly c o mple x syste m

www.DL R.de / SART • Cha rt 4 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 Propellant Storage and I ntro duc tio n Management Mass Valves and Pressurant Thermal Tanks Lines Regulators Gas Storage Management Pressurant Thermal Cylinders Feedlines Gas Insultation Fill and Drain Domes Tanks Lines Pressurisation Heaters, heat Baffles Lines exchangers Y-Rings, Manholes

www.DL R.de / SART • Cha rt 5 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 I ntro duc tio n Spac e T r anspor tation Syste m (ST S) Pr e liminar y De sign DL R-SART T o o l b o x ha s b e e n de ve lo pe d fo r pre limina ry spa c e tra nspo rta tio n syste m a na lysis a nd de sig n:  a st c o mputa tio n time (se c o nds, minute s); mo de lling (minute s, fe w F ho urs)  Simple T he rma l Co nfig ura tio n  F le xible a nd ma ss  Re lia ble Struc ture  Modula r Pro pulsio n Sub syste ms Ae ro dyna mic s F lig ht dyna mic s a nd c o ntro l T ra je c to ry

www.DL R.de / SART • Cha rt 6 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 I ntro duc tio n Co nfig ura tio n a nd Ma ss Pro pulsio n Ae ro d yna mic T ra je c to ry T he rma l Co ntro l Struc ture s Sub syste ms

www.DL R.de / SART • Cha rt 7 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 I ntro duc tio n Re q uire d ta nk vo lume s Co nfig ura tio n a nd Ma ss E ng ine re q uire me nts, ma ss flo w ra te s, mixture ra tio s Pro pulsio n Ae ro d yna mic L o a d s, e nviro nme nta l c o nd itio ns T ra je c to ry T he rma l he a t flux T he rma l Co ntro l Ne w struc tura l ma ss Struc ture s E ig e nfre q ue nc ie s Sub syste ms

www.DL R.de / SART • Cha rt 8 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 PMP Mo de lling Appro a c h Pr ogr am F unc tion  Ra pid sizing a nd la yo ut o f ta nks (le ng th, ma ss, thic kne ss) a nd line s (ma ss)  T he la yo ut o f the pre ssurisa tio n syste m:  Simula tio n o f the e ntire missio n, inc luding sta g e lo a ds, the rma l lo a ds, e ng ine o pe ra tio n a nd the lo g ic a l c o ntro l o f the ulla g e pre ssure s, inc luding b o th pre ssura nt g a s inje c tio n a nd ve nting .

www.DL R.de / SART • Cha rt 9 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 PMP Mo de lling Appro a c h Mode ls  T he c a lc ula tio n me tho ds e mplo ye d in the pro g ra m a re 1-dime nsio na l, a nd invo lve inte g ra l c o nside ra tio n o f c o ntro l vo lume s.  L iq uid stra tific a tio n:  He a t flo w o ve r liq uid-va po r inte rfa c e  He a t input thro ug h ta nk wa lls  L iq uid ma ss is divide d in ho rizo nta l, disc re te la ye rs  He a t c o nduc tio n fro m la ye r to la ye r  Slo shing imple me nte d b y inc re a se d he a t tra nsfe r c o e ffic ie nt b e twe e n la ye rs

www.DL R.de / SART • Cha rt 10 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 PMP Mo de lling Appro a c h Mode ls  Ulla g e pre ssure re g ula tio n simula te d o ve r the missio n, with simplifie d c o ntro l lo g ic e na c te d :  Pre ssure ma inta ine d within spe c ifie d o pe ra ting windo w thro ug h ve nting o r the inje c tio n o f pre ssura nt g a s into ta nk ulla g e s (b a ng - b a ng style ).  Va lve dia me tre s, de la y time s c a n b e spe c ifie d.  Curre ntly, o nly ide a l g a s la ws a re c o nside re d, ho we ve r re a l g a s la w imple me nta tio n is fo re se e n.

www.DL R.de / SART • Cha rt 11 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 PMP Mo de lling Appro a c h Mode ls   ′ ′   ′ ′  ′ ′  T T V  ′ ′ ′ ′ ′ ′   = ⋅ − ⋅ + ⋅ + ⋅ ⋅ − Pre ssure ra te :      p ( m m ) R ( m R m R )   ′ ′ ′ ′ ′ ′ vap vent vap pg pg   V  T V   F lo w ra te va po rize d pro pe lla nt (He rtz-K nudse n): 1 − ′ ′ = ⋅ ⋅ ⋅ − ⋅  10 6 m A ( p p ) ratio ′ ′ ′ ′ π ⋅ ⋅ vap i sat 2 R T ′ ′ ⋅ p V  = Ma ss pre ssura nt g a s: m m ′ ′ ′ ′ ′ ′ = ⋅ ⋅ pg vap ratio R T Z + pg m m vap pg  ′ ′ ′ ′ ′ ′ ′ ′ ′ ′ ′ ′  ′ ′ = − ⋅ ⋅ − ⋅ ⋅    U ( m m ) c T m c T I nte rna l e ne rg y ulla g e o ve r time (no he a tflo w): vap vent v vap v  ′ ′  Ga smixture te mpe ra ture ra te : U  ′ ′ = T ′ ′ ⋅ ′ ′ m vap c v

www.DL R.de / SART • Cha rt 12 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 PMP Mo de lling Appro a c h Mode ls ′ ′ +   m m   ′ ′ Ulla g e vo lume ra te : = drain vap V ρ liq    ⋅ ′ ′ ⋅ − ′ ′ + + − − ⋅   m c ( T T ) Q Q Q m h −   ′ ′ = pg p pg prop wall gas wall liq gas vap prop , , Ulla g e te mpe ra ture ra te : T ′ ′ + ⋅ ( m m ) c vap pg p ′ ′ − ′ ′ ′ ′ − ′ ′    m m m m Ulla g e pre ssure ra te : ′ ′ = ⋅ ′ ′ ⋅ ′ ′ + ′ ′ ⋅  ′ ′  prop vent vap vent p R T R T ′ ′ ′ ′ V V ′ ′ T   ′ ′ ′ ′ ′ ′ ′ ′ ′ ′ = − ⋅ ⋅ ⋅ Va po rise d pro pe lla nt vo lume ra te :   V ( m m ) Z R ′ ′ vap vap vent p

www.DL R.de / SART • Cha rt 13 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 PMP Mo de lling Appro a c h

www.DL R.de / SART • Cha rt 14 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 PMP Mo de lling Appro a c h Pr ogr am F unc tionality I nputs: Outputs:   Ge o me try inputs Sta tic o utputs:   Pro pe lla nt ma sse s (a sc e nt, T a nk thic kne ss, le ng th a nd de sc e nt, re sidua l, re se rve ) vo lume ,   T a nk type a nd de sig n fa c to rs T a nk, line ma sse s,   T a nk initia l the rma l c o nditio ns Re sidua ls (fluid a nd g a se o us)   Missio n histo ry inputs T ime -de pe nda nt   Ulla g e pre ssure re q uire me nts Histo ry o f ma ss flo ws, ve lo c itie s,  E ng ine ma ss flo w ra te pre ssure s, NPSPs, he a t tra nsfe r   F lg ht pro file (lo a ds, e xte rna l Ulla g e te mpe ra ture s a nd te mpe ra ture , he a t fluxe s) pre ssure s, e va po ra tio n

www.DL R.de / SART • Cha rt 15 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015

www.DL R.de / SART • Cha rt 16 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 Sa turn-V a nd AS506 We rnhe r vo n Bra un; F -1 E ng ine s vie w Ve hic le Ove r So urc e : NASA

www.DL R.de / SART • Cha rt 17 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 Sa turn-V a nd AS506 S-IC S-IVB vie w Ve hic le Ove r S-II

www.DL R.de / SART • Cha rt 18 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 Sa turn-V a nd AS506 vie w Ve hic le Ove r  S-I VB T hird Sta g e 9 x cold spheres for LOX pressurisation/re-pressurisation and LH2 re -pressurisation 2 x reserve ambient spheres for LOX re- 6 x reserve ambient pressurisation spheres for LH2 re- pressurisation

www.DL R.de / SART • Cha rt 19 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 Sa turn-V a nd AS506 vie w Mission Ove r

www.DL R.de / SART • Cha rt 20 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 Sa turn-V a nd AS506 vie w Mission Ove r

www.DL R.de / SART • Cha rt 21 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 Sa turn-V a nd AS506 vie w Mission Ove r

www.DL R.de / SART • Cha rt 22 > PMP > Va ne ssa Cla rk • E UCASS > 01.07.2015 Sa turn-V a nd AS506 vie w Mission Ove r