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/F_LIGHT. TEST_D ATTAA
BOOK XII
TIMING, PRESSURE- A350 DIR IQ6
AD - FPAD o GIAO - G2AD - G$T A$ST "8SSR ASST 112
BUDGET 104RRD 122
I[DIT 149REG 122
_._.._ ACD 137• ._o _l_=- 21_
• .,-_'_J _IDLO 242
-_ / IRD 1235"j"_ SMO 310
_" " SRD 188NASA HQ. ---
AND ALTITUDE COMPARISONSN67 15134
' """7"sWo
_r_ASA CR O-R TMX OR AD NUMBER)
GPO PRICE $
RU)
(CAT[GORY|
Prepared byi _
Computation and Analysisil
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Division
CFSTI PRICE(S) $
ETS 112EHGR 107AD - ADM I t 1
CH. C 145PA 15 r_SEC Slg
FtSC 13GA$O 1!!PHOTO 190pERS 3O9PROC 1:38
Hard copy (HC).
Microfiche (M F) _
ff653 July 65
NATIONAL AcK,_,_,.,UTICS AND SPACE ADMINISTRATION
•MANNED SPACECRAFT CENTER
HOUSTON, TEXAS
19 JANUARy 1965
#IIASA-LANGLEYMAR2 1965
https://ntrs.nasa.gov/search.jsp?R=19670003805 2020-03-25T04:13:12+00:00Z
V
II
TIMING, PRESSURE, AND ALTITUDE COMPARISJONS
TABLEOFCONTENTS
SEC TION I
Sensor Locations
SEC TION II
Computation Procedures
SEC TION III
Plots And Tabulations Of Pressure And Altitude Differences
Seq. No. Definition Plot. No.
CB07
QB04
QB09
QBIO
QC14
QD06KB02
Delta Forward Compartment Pressure I
Delta Conic Section R/H Equip. Compt. 2Absolute Pressure
Delta Landing Gear Compt. Abs. Press. 3Delta L/H Equip. Compt. Abs. Press. 4
Delta Retro-Compt. Abs. Pressure 5
Delta Adapter Equip. Compt. Abs. Press. 6
Delta Radar Cover Cavity Abs. Press. 7Delta Pressure - Altitude 8
Tab. No.
II
I
I
1
2
DJ13
DM13
SECTION IV
Plots And Tabulations Of Time Differences
Delta Greenwich Mean Time
Delta Time In Ascent Mode
Delta Time In Reentry Mode
2
2
3
S_CTIONI
SENSORLOCATIONS
NASA-S-64-7216
OAMS
relay panel--\
OAME
package.----
--Discrete command\ relay panel No, 1\\\
/ -QCI5
-- Discrete command
relay panel No. 2
-------DCS unit
-- LAO 5
ACQ aidbeacon
LDO1 -/
Instrumentationpackage No. 1-- /
// I
Lo-level multiplexer -/ / I LB04
Hi-level multiplexer -/
//
--Diplexer _iii_.
E:
i-- S band !i_.beacon :_
-- ECS 02 _!i
bottle .ii:
/ --CA02 .:i;/ .!!:
.:_iii::; Sequence numbers.::_ ...._::i::;: of parameters
::::::::::::::::::::::::::located on this drawing
%-- CAO1
CA01 LD01CA02 QC15LA05LB04
Adapter section-electronic module and ECS primary oxygen
NASA-S-64-7224
CB07--\
/ -- CC04
CC01
/ --CC03
CA03
KBO2--
CB01 -/
/CB02 -I
/
CC05-- //
CC02 -/
Reentry vehicle - ECS module
/
Sequence numbersof parameterslocated on this drawing
CA03 CC04CA04 CC05CB01 KB02CB02CB07CC01
CC02
CC03
NASA-S-64-7212
TY
LX 8
_',,! _2_-.JL.#Yooo_ .8 \oo,o
Z 2 2 3.5 RX ii_!ii ':i:iiiii:i _ Z 104.50
LegendCl Outside surface0 Opposite side surface• Inside spacecraft
Sequencenumbersof parameterslocated on this drawing
AB07 QA11 QD07AB08 QA12 QD08MA28 QA13 QD09MA29 QA14 QDIOQA09 QD06 QD11QA10
Reentry vehicle - vibration_ separation_ pressure_ and temperature sensors
NASA-S-64-7218
Sequencenumbersof parameterslocatedon this drawing
HH07QCI4
QC14
HH07
N-- Adapterseparation- retrosequencerelay panelassy
Adapterretrosection-retrorocketsandmountingstructure
NASA-S-64-7211
--BD011 BD02, BE011BE02_ BH011BH02
I\\
\
/-Low-level/ multiplexer
,--Instrumentation / /-High-level/ package no. 2, / / multiplexer
/ /-Referencer-BFO./// / / junction box/
/ / /, / / P Suit compressor/ / /
/ power supply
/ /- Fan power/ / supply
/ _-DC-to-DC // / /
converters /
//
// /
/
/- Low frequencyTM transmitter
FHigh frequency/ TM transmitter
/-- UHF voice// transceiver
Reentry vehicle - right hand equipment bay
Suit compressor\\ \\\ \\.___ power supply
\ Coaxial switch\ \
\ _C band\ beacon
x_ Programmer
Sequence numbersof parameterslocated on this drawing
BDOZ BH01BD02 BH02BE01 LEO5BE02 LC04BFO 1 QB04BF05
SNCTION II
COMPUTATION PROCEDURES
PRESSUREANDALTITUDECOMPARISONS
Differences between the free stream ambient pressure and the telemeteredpressures were computedby subtracting the free stream ambient pressurefrom the telemetered pressures. The telemetered pressures were smoothedby using a three-point moving average prior to differencing. The freestream ambient pressure profile was constructed by using measuredmeteor-ological, radar, and IGS data. Free stream ambient pressure was inter-polated, where needed, by using Aiken's four-poing interpolation tech-nique. Thesedifferences were computedbelow 150Kfeet for ascent andreentry.
Altitude differences were computedby subtracting the measuredaltitudefrom the pressure-altitude below 65K feet for ascent and reentry. Theprocedure for computing differences for KB02is as follows:
a. SmoothKB02by using a three-point moving average.
b. Convert KB02pressure reading to altitude by using the ARDC1962 model atmosphere.
c. Convert the radar measuredaltitude to pressure by using themeasuredmeteorological data.
d. Convert the pressure from (c) to altitude by using the ARDC1962 model atmosphere.
e. Computealtitude differences (a) - (c) for ascent and reentryphase below 65K feet.
TIMER EVALUATION
The GM time and time in mode (DJ13, DM13) were compared with
the on-board elapsed time. The time differences were computed
as follows, every 2.A seconds:
Delta GMT = GMT -(AA02)
Delta time in ascent mode = DJ13 - AAO2
Delta time in reentry mode = DM13 -AA02
where:
AA02 = coarse time
GMT = AFETR D-5 time (time from lift-off)
DJ13 = time in ascent mode
DM13 = time in reentry mode
SNSTIONIII
PLOTSANDTABULATIONSOFPRESSUREANDALTITUDEDIFFERENCES
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