Appropriate Offset Correction Procedure for Flight Measured Pressure in Launch Vehicle Compartment Venting Analysis

B. Venkat Shivaram Jadav; K. Manokaran; Dipankar Das; M. M. Patil; V. Ashok

doi:10.1007/978-981-19-7055-9_15

Appropriate Offset Correction Procedure for Flight Measured Pressure in Launch Vehicle Compartment Venting Analysis

B. Venkat Shivaram Jadav, K. Manokaran, Dipankar Das, M. M. Patil, V. Ashok

Indian Space Research Organization

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Appropriate offset correction procedure for flight measured compartment pressure values has been discussed in this paper. Compartment pressure is essential in the overall load computation of launch vehicle structures. Prediction and measurement of internal pressure plays a major role in the venting analysis, structural design and analysis. Any offset/bias in the measured pressure at the sea-level conditions will reflect in the flight measurements till they get saturated during the flight. In this paper, a typical launch vehicle flight measured compartment pressure is presented with appropriate bias correction. The offset corrected values should also reflect the trend in the aerodynamic characteristics, like the external pressure variation at various Mach numbers and angles of attack. Initial offset correction using channel offset procedure, adding a constant bias and applying a multiplication scale factor to all the flight measured values gave different results. Results obtained from these initial offset procedures are compared against other flight values. The offset correction methodology is also validated with cone-cylinder type PLF venting results.

Original language	English
Title of host publication	Fluid Mechanics and Fluid Power - Select Proceedings of FMFP 2021
Editors	Suvanjan Bhattacharyya, Himadri Chattopadhyay
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	87-91
Number of pages	5
ISBN (Print)	9789811970542
DOIs	https://doi.org/10.1007/978-981-19-7055-9_15
Publication status	Published - 2023
Externally published	Yes
Event	48th National Conference on Fluid Mechanics and Fluid Power, FMFP 2021 - Pilani, India Duration: 27 Dec 2021 → 29 Dec 2021

Publication series

Name	Lecture Notes in Mechanical Engineering
ISSN (Print)	2195-4356
ISSN (Electronic)	2195-4364

Conference

Conference	48th National Conference on Fluid Mechanics and Fluid Power, FMFP 2021
Country/Territory	India
City	Pilani
Period	27/12/21 → 29/12/21

Keywords

Compartment Pressure
Depletion
Depressurization
Flight Sensor
initial Bias correction
Launch vehicle
MEMS
offset correction
Structural load
Transducer
Venting

ASJC Scopus subject areas

Automotive Engineering
Aerospace Engineering
Mechanical Engineering
Fluid Flow and Transfer Processes

Access to Document

10.1007/978-981-19-7055-9_15

Cite this

Venkat Shivaram Jadav, B., Manokaran, K., Das, D., Patil, M. M., & Ashok, V. (2023). Appropriate Offset Correction Procedure for Flight Measured Pressure in Launch Vehicle Compartment Venting Analysis. In S. Bhattacharyya, & H. Chattopadhyay (Eds.), Fluid Mechanics and Fluid Power - Select Proceedings of FMFP 2021 (pp. 87-91). (Lecture Notes in Mechanical Engineering). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-981-19-7055-9_15

Venkat Shivaram Jadav, B. ; Manokaran, K. ; Das, Dipankar et al. / Appropriate Offset Correction Procedure for Flight Measured Pressure in Launch Vehicle Compartment Venting Analysis. Fluid Mechanics and Fluid Power - Select Proceedings of FMFP 2021. editor / Suvanjan Bhattacharyya ; Himadri Chattopadhyay. Springer Science and Business Media Deutschland GmbH, 2023. pp. 87-91 (Lecture Notes in Mechanical Engineering).

@inproceedings{cd387162c95a48e1af03e07515ef385d,

title = "Appropriate Offset Correction Procedure for Flight Measured Pressure in Launch Vehicle Compartment Venting Analysis",

abstract = "Appropriate offset correction procedure for flight measured compartment pressure values has been discussed in this paper. Compartment pressure is essential in the overall load computation of launch vehicle structures. Prediction and measurement of internal pressure plays a major role in the venting analysis, structural design and analysis. Any offset/bias in the measured pressure at the sea-level conditions will reflect in the flight measurements till they get saturated during the flight. In this paper, a typical launch vehicle flight measured compartment pressure is presented with appropriate bias correction. The offset corrected values should also reflect the trend in the aerodynamic characteristics, like the external pressure variation at various Mach numbers and angles of attack. Initial offset correction using channel offset procedure, adding a constant bias and applying a multiplication scale factor to all the flight measured values gave different results. Results obtained from these initial offset procedures are compared against other flight values. The offset correction methodology is also validated with cone-cylinder type PLF venting results.",

keywords = "Compartment Pressure, Depletion, Depressurization, Flight Sensor, initial Bias correction, Launch vehicle, MEMS, offset correction, Structural load, Transducer, Venting",

author = "{Venkat Shivaram Jadav}, B. and K. Manokaran and Dipankar Das and Patil, {M. M.} and V. Ashok",

note = "Publisher Copyright: {\textcopyright} 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.; 48th National Conference on Fluid Mechanics and Fluid Power, FMFP 2021 ; Conference date: 27-12-2021 Through 29-12-2021",

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Venkat Shivaram Jadav, B, Manokaran, K, Das, D, Patil, MM & Ashok, V 2023, Appropriate Offset Correction Procedure for Flight Measured Pressure in Launch Vehicle Compartment Venting Analysis. in S Bhattacharyya & H Chattopadhyay (eds), Fluid Mechanics and Fluid Power - Select Proceedings of FMFP 2021. Lecture Notes in Mechanical Engineering, Springer Science and Business Media Deutschland GmbH, pp. 87-91, 48th National Conference on Fluid Mechanics and Fluid Power, FMFP 2021, Pilani, India, 27/12/21. https://doi.org/10.1007/978-981-19-7055-9_15

Appropriate Offset Correction Procedure for Flight Measured Pressure in Launch Vehicle Compartment Venting Analysis. / Venkat Shivaram Jadav, B.; Manokaran, K.; Das, Dipankar et al.
Fluid Mechanics and Fluid Power - Select Proceedings of FMFP 2021. ed. / Suvanjan Bhattacharyya; Himadri Chattopadhyay. Springer Science and Business Media Deutschland GmbH, 2023. p. 87-91 (Lecture Notes in Mechanical Engineering).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Ashok, V.

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N2 - Appropriate offset correction procedure for flight measured compartment pressure values has been discussed in this paper. Compartment pressure is essential in the overall load computation of launch vehicle structures. Prediction and measurement of internal pressure plays a major role in the venting analysis, structural design and analysis. Any offset/bias in the measured pressure at the sea-level conditions will reflect in the flight measurements till they get saturated during the flight. In this paper, a typical launch vehicle flight measured compartment pressure is presented with appropriate bias correction. The offset corrected values should also reflect the trend in the aerodynamic characteristics, like the external pressure variation at various Mach numbers and angles of attack. Initial offset correction using channel offset procedure, adding a constant bias and applying a multiplication scale factor to all the flight measured values gave different results. Results obtained from these initial offset procedures are compared against other flight values. The offset correction methodology is also validated with cone-cylinder type PLF venting results.

AB - Appropriate offset correction procedure for flight measured compartment pressure values has been discussed in this paper. Compartment pressure is essential in the overall load computation of launch vehicle structures. Prediction and measurement of internal pressure plays a major role in the venting analysis, structural design and analysis. Any offset/bias in the measured pressure at the sea-level conditions will reflect in the flight measurements till they get saturated during the flight. In this paper, a typical launch vehicle flight measured compartment pressure is presented with appropriate bias correction. The offset corrected values should also reflect the trend in the aerodynamic characteristics, like the external pressure variation at various Mach numbers and angles of attack. Initial offset correction using channel offset procedure, adding a constant bias and applying a multiplication scale factor to all the flight measured values gave different results. Results obtained from these initial offset procedures are compared against other flight values. The offset correction methodology is also validated with cone-cylinder type PLF venting results.

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Venkat Shivaram Jadav B, Manokaran K, Das D, Patil MM, Ashok V. Appropriate Offset Correction Procedure for Flight Measured Pressure in Launch Vehicle Compartment Venting Analysis. In Bhattacharyya S, Chattopadhyay H, editors, Fluid Mechanics and Fluid Power - Select Proceedings of FMFP 2021. Springer Science and Business Media Deutschland GmbH. 2023. p. 87-91. (Lecture Notes in Mechanical Engineering). doi: 10.1007/978-981-19-7055-9_15

Appropriate Offset Correction Procedure for Flight Measured Pressure in Launch Vehicle Compartment Venting Analysis

Abstract

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Conference

Keywords

ASJC Scopus subject areas

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