Development status of the Vulcain 2 engine

Caisso, P.; Barton, J.L.; Illig, Michel; Margat, T.

doi:10.2514/6.2000-3781

Cited by 4 publications

(2 citation statements)

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“…The Vulcain 2 is planning on 6 engines, 100 firings and 40,000 seconds and the RS-68 expects 12 engines and 20,000 seconds to complete the program. 12 In an attempt to review typical design life requirements, Figure 9 shows the seconds of design life referenced to the number of mission times. The SSME was designed and tested for reusability and cannot be compared to the other expendable engines.…”

Section: Discussionmentioning

confidence: 99%

“…Recent booster development efforts for the LE-7A, the Vulcain 2 and the Delta IV RS-68 have been predicted by the manufacturers to require 5 to 6 years. 12 ' 17 ' 36 The Ariane VINCI upper stage engine development is expected to take 7 years. 37 Scope of Test Program: Figures 3 -8 show the number of engines, firings, and seconds needed to complete the development and qualification process.…”

Section: Discussionmentioning

confidence: 99%

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A survey of development test programs for hydrogen oxygen rocket engines

Emdee

2001

39th Aerospace Sciences Meeting and Exhibit

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The rocket industry is currently developing and qualifying new hydrogen oxygen booster rocket engines for the Delta IV, Ariane V and HII-A launch vehicles. In addition the National Aeronautics and Space Administration (NASA) is considering advanced liquid engine development for future reusable manned launch vehicles. There is often a desire to define engine development requirements so that sufficient testing is performed to ensure successful flight operation. There is also a desire to not over-test a system using requirements that are overly conservative. Both under and over testing can lead to cost overruns and introduce schedule delays until full operational capability is achieved.In an attempt to understand the test needs for future engine systems the scope of past development programs for hydrogen oxygen rocket engines is explored. The strengths and weaknesses of each of these programs will be discussed. The interpretation of the results focuses on topics such as the typical number of test engines, number of tests, and the scope of test objectives.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

A survey of development test programs for hydrogen oxygen rocket engines

Emdee

2001

39th Aerospace Sciences Meeting and Exhibit

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Experimental Investigation of Aerostatic Journal Bearings Made of Carbon Fiber-Reinforced Carbon Composites

Schimpf

Ortelt

Seiler

et al. 2021

Journal of Tribology

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This study describes experimental results using carbon fiber-reinforced carbon (C/C) material for porous journal bearings under static conditions. Exerted radial forces of up to 90 N, a supply pressure of up to 6 bar and a maximum rotational speed of 8000 rpm were tested. The occurrence of pneumatic hammering was not observed under these operating points. Triangulation sensors were mounted vertically and horizontally as well as in front of and behind the tested bearing. These sensors measure eccentricity and misalignment. The orbit analysis demonstrated an improvement in concentricity with an increment in the supply pressure. The layered structure of the C/C material used for the porous liner is presented. A rotational speed below 8000 rpm negligibly influenced the load-carrying capacity and the flow rate. The vertical misalignment of the shaft was determined in relation to the force-applied test bearing to the shaft. In addition, two vertically positioned sensors on the support-bearing housing were used to discern the misalignment in the absolute system. On the other hand, reducing the speed to 1000 rpm increased the concentricity error. The shaft showed no significant signs of use after the experiments. The measurements confirm the suitability of the material for porous bearings.

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Liquid rocket engine test plan comparison

Pempie

Vernin²

2001

37th Joint Propulsion Conference and Exhibit

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Development status of the Vulcain 2 engine

Cited by 4 publications

References 0 publications

A survey of development test programs for hydrogen oxygen rocket engines

A survey of development test programs for hydrogen oxygen rocket engines

Experimental Investigation of Aerostatic Journal Bearings Made of Carbon Fiber-Reinforced Carbon Composites

Liquid rocket engine test plan comparison

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