Japan Aerospace Exploration Agency Kakuda Space Center, Institute of Aerospace Technology
Japan Aerospace Exploration Agency Kakuda Space Center, Institute of Aerospace Technology
Japan Aerospace Exploration Agency Institute of Aerospace Technology
Japan Aerospace Exploration Agency Kakuda Space Center, Institute of Aerospace Technology
Japan Aerospace Exploration Agency Kakuda Space Center, Institute of Aerospace Technology
Japan Aerospace Exploration Agency Institute of Aerospace Technology
Japan Aerospace Exploration Agency Kakuda Space Center, Institute of Aerospace Technology
Japan Aerospace Exploration Agency Kagoshima Space Center, Office of Space Flight and Operations
Strong side-loads were observed for LE-7A engine during start-up and shut-down transient in the early development phase. To investigate causes of the side-load and to resolve the problem, co-laborative research work between NAL and NASDA has been conducted. As a result, the causes were revealed to be a separation jump and a restricted shock separation. Based on the results, the nozzle design of the LE-7A was renewed. No strong side-load as original nozzle design was observed for renewed nozzle design.
ノズル過大横推力の原因究明と対策
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