PRISM (PaRametrIc System Model)

PRISM (PaRametrIc System Model)
simple system	PRISM v1.1.7
by: I.B. Simpleton	May 05, 2018

Design Variables (nominal values)
Name	Value	Units	Description
PHe	3250

Design Variable Summary

Design Variables (nominal values)
Name	Value	Units	Description
PHe	3250

Result Variables
Name	Value	Units	Description	Constrain	Limit
HeMass	17.8626	lbm	Helium Gas Mass (lbm)		---
HePVoverW	226680		Helium Tank PV/W		---
HeSysMass	353.705	lbm	Helium System Mass (lbm)		---
HeTankMass	335.842	lbm	Helium Tank Mass (lbm)		---
HeVolume	8.9258	cuft	Helium Tank Volume (cuft)		---

Cylindrical/Spherical/Elliptical Tank: Fuel Tank

mass = 393.856 lbm type = inert

Metal Tank Algorithm

Structural Material : Ti

Bladder Thickness is input at 0.030 in

kalmod = 0

==== INPUT ====
Name	Value	Units
vfree	= 100000	cuin
vfreeTotal	= 100000	cuin
ell	= 1.414
rcyltd	= 2
ptank	= 300	psia
sf	= 1.5
cxw	= 1.25
ithcyl	= 1
kacqui	= 4	full BRD stainless steel
inpex	= 0
expefi	= 0.99
tblad	= 0.030	in
tbond	= 0.030	in
ttrspc	= 0.010	in
rhobnd	= 0.04	lbm/cuin
rhoacq	= 0.28	lbm/cuin
tliner	= 0.030	in
rholiner	= 0.1	lbm/cuin

==== OUTPUT ====
Name	Value	Units
rinsid	= 18.864	in
dinsid	= 37.728	in
OR	= 18.995	in
OD	= 37.990	in
OH	= 102.358	in
hinsid	= 102.137	in
SAinsid	= 12572.928	sqin
cyl	= 75.455	in
wacqui	= 129.160	lbm
vacqui	= 761.338	cuin
dpacq	= 33.8396	psig
pullag	= 333.84	psia
vresid	= 3100.64	cuin
vtank	= 104238	cuin
tming	= 0.030	in
thkcyl	= 0.071	in
thkend	= 0.050	in
thkBladOut	= 0.030	in
wliner	= 37.719	lbm
wtank(+liner)	= 185.925	lbm
rho	= 0.16	lbm/cuin
sy	= 119000	psi
e	= 1.5e+07	psi
PmeopVoverW	= 79398.2	lbf-in/lbm
Pburst(est.)	= 450.0	psia
PburstVoverW	= 119097	lbf-in/lbm

Cylindrical/Spherical/Elliptical Tank: Helium Tank

mass = 335.842 lbm type = inert

Metal Tank Algorithm

Structural Material : Ti

kalmod = 0

==== INPUT ====
Name	Value	Units
vfree	= 15423.8	cuin
vfreeTotal	= 15423.8	cuin
ell	= 1.414
rcyltd	= 2
ptank	= 3250	psia
sf	= 1.5
cxw	= 1.25
ithcyl	= 1
kacqui	= 0	no acq. device
inpex	= 0
expefi	= 0.99
tblad	= 0.030	in
tbond	= 0.030	in
ttrspc	= 0.010	in
rhobnd	= 0.04	lbm/cuin
rhoacq	= 0.28	lbm/cuin
tliner	= 0.030	in
rholiner	= 0.1	lbm/cuin

==== OUTPUT ====
Name	Value	Units
rinsid	= 10.019	in
dinsid	= 20.037	in
OR	= 10.489	in
OD	= 20.978	in
OH	= 54.935	in
hinsid	= 54.246	in
SAinsid	= 3546.507	sqin
cyl	= 40.075	in
wacqui	= 0.000	lbm
vacqui	= 0	cuin
dpacq	= 0	psig
pullag	= 3250	psia
vresid	= 86.4464	cuin
vtank	= 15616.1	cuin
tming	= 0.030	in
thkcyl	= 0.410	in
thkend	= 0.285	in
thkBladOut	= 0.030	in
wliner	= 10.640	lbm
wtank(+liner)	= 268.674	lbm
rho	= 0.16	lbm/cuin
sy	= 119000	psi
e	= 1.5e+07	psi
PmeopVoverW	= 151120	lbf-in/lbm
Pburst(est.)	= 4875.0	psia
PburstVoverW	= 226680	lbf-in/lbm

Cylindrical/Spherical/Elliptical Tank: Oxidizer Tank

mass = 551.250 lbm type = inert

Metal Tank Algorithm

Structural Material : Ti

Bladder Thickness is input at 0.030 in

kalmod = 0

==== INPUT ====
Name	Value	Units
vfree	= 150000	cuin
vfreeTotal	= 150000	cuin
ell	= 1.414
rcyltd	= 2
ptank	= 300	psia
sf	= 1.5
cxw	= 1.25
ithcyl	= 1
kacqui	= 4	full BRD stainless steel
inpex	= 0
expefi	= 0.99
tblad	= 0.030	in
tbond	= 0.030	in
ttrspc	= 0.010	in
rhobnd	= 0.04	lbm/cuin
rhoacq	= 0.28	lbm/cuin
tliner	= 0.030	in
rholiner	= 0.1	lbm/cuin

==== OUTPUT ====
Name	Value	Units
rinsid	= 21.592	in
dinsid	= 43.185	in
OR	= 21.734	in
OD	= 43.468	in
OH	= 117.146	in
hinsid	= 116.911	in
SAinsid	= 16473.204	sqin
cyl	= 86.370	in
wacqui	= 169.312	lbm
vacqui	= 997.911	cuin
dpacq	= 32.07	psig
pullag	= 332.07	psia
vresid	= 4837.95	cuin
vtank	= 156329	cuin
tming	= 0.030	in
thkcyl	= 0.082	in
thkend	= 0.058	in
thkBladOut	= 0.030	in
wliner	= 49.420	lbm
wtank(+liner)	= 271.688	lbm
rho	= 0.16	lbm/cuin
sy	= 119000	psi
e	= 1.5e+07	psi
PmeopVoverW	= 85077	lbf-in/lbm
Pburst(est.)	= 450.0	psia
PburstVoverW	= 127615	lbf-in/lbm

Helium Pressurant: Helium Pressurant

mass = 17.863 lbm type = pressurant

Polytropic Heat Transfer

==== INPUT ====
Name	Value	Units
VpropTnk	= 250000	cuin
PHeTnk	= 3250	psia
PpropNom	= 159.36	psia
PfinHeOvPnom	= 1
tAction	= 433.94	sec
TminR	= 510.0	degR
TmaxR	= 550.0	degR
tPolyCorr	= 240	sec
gamPolyCorr	= 1.66
gamLimPolyCorr	= 1

==== OUTPUT ====
Name	Value	Units
WHeTotal	= 17.863	lbm
WtHeResid	= 1.038	lbm
WHeExpended	= 16.825	lbm
volHeTotal	= 15423.8	cuin
wdotHe	= 0.0387718	lbm/sec
compressInit	= 1.10244
PinitCold	= 3016.06	psia
densInitBot	= 2.0012	lbm/cuft
densFinalBot	= 0.11629	lbm/cuft
densFinalProp	= 0.116292	lbm/cuft
gammaPoly	= 1.00108
TfinalPropHe	= 508.4	degR
TfinalHeBot	= 508.4	degR
PfinalHeBot	= 159.4	psia

(PRISM) PaRametrIc System Model
PRISM v1.1.7
contact: C. Taylor, cet@appliedpython.com