ISA [kPa, rho]

#1 Posted: 5/28/2019 9:52:14 AM

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On the day you will go to Haven, don't forget your bottle,
air is pretty thin up there !

Inst_ISA [kPa].sm (61.94 KiB) downloaded 1033 time(s).
Inst_ISA [specific rho].sm (155.14 KiB) downloaded 1072 time(s).

#2 Posted: 5/29/2019 10:24:41 AM

Jean Giraud

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1. refreshed/augmented [kPa], [rho]
2. augmented from latest Ralph Carmichael
3. added solve NASA(h)
4. by same token => Mach sub/supersonic.

Inst_ISA [kPa] solve NASA.sm (19.88 KiB) downloaded 1119 time(s).
Inst_ISA [kPa].sm (261.98 KiB) downloaded 1073 time(s).
Inst_ISA [specific rho].sm (229.24 KiB) downloaded 1020 time(s).
Inst_Mach Number Pitot.sm (187.05 KiB) downloaded 1316 time(s).

#3 Posted: 5/29/2019 6:37:53 PM

Jean Giraud

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... here is the missing link, NASA altitude vs kPa.
Two gorgeous segments from discrete NASA inverser
collected in the data inverse. Discrete solver included
as demo for other applications ... play with that one.

Jean

Solve INVERSE Recursive NASA.sm (12.69 KiB) downloaded 1225 time(s).
Inst_ISA [kPa] solve NASA altitude.sm (107.66 KiB) downloaded 1075 time(s).

#4 Posted: 6/2/2019 7:32:58 PM

Jean Giraud

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Revisit/resume km_kPa ... from several proposals:
1. Thiele two segments
2. Transmute modified Carlos
3. Wolf-Rabbit two segments
4. HKL [simple/corrected]
5. Exact_4 [± 0.001 m ... 0 m up ~ 11 km] <= ! ! !

Inst_ISA [km_kPa] solve NASA Reconciliate Copy.sm (137.46 KiB) downloaded 1059 time(s).

#5 Posted: 6/3/2019 10:36:44 PM

CBG

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Hillo Jean
This is another approach

Best Regards

Carlos

#6 Posted: 6/4/2019 12:51:38 AM

Jean Giraud

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Wrote
Hello Jean
This is another approach

Thanks Carlos, tested page 13.
The all range [0 .. 101.325 kPa] ... [0 .. 60km]
resumed in 4 segments of same format, zero error page 11, 12
NASA is short of accepting @ 60 km, pressure still exists !.

Jean

Inst_ISA [km_kPa] solve NASA Reconciliate.sm (196.66 KiB) downloaded 1138 time(s).

#7 Posted: 6/4/2019 9:00:35 AM

Jean Giraud

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Wrote
The all range [0 .. 101.325 kPa] ... [0 .. 60km]

... final reconciliation pages 14, 15
Tiele 13 terms converted to J continued fraction
Just a peanut ... truncate β at will, reasonably, checking Δm.

Jean

Inst_ISA [km_kPa] solve NASA Reconciliate.sm (215.38 KiB) downloaded 1117 time(s).

2 users liked this post

frapuano 6/4/2019 10:19:00 AM, NDTM Amarasekera 6/4/2019 11:43:00 AM

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