2-pulse gas generator and method of measuring propellant combustion surface position
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsSeiki NISHIKAWA, Chiyako MIHARA, Tasuku SUZUKI, Katsunori IEKI
Life of this patent
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Abstract
The first solid propellant is formed to have a columnar shape so as for a combustion surface to move to a first direction, and to have an end surface exposed to a combustion space. The surface of first solid propellant except for the end surface is covered with a barrier membrane. The position of combustion surface in the first direction is detected by a position sensor device in an always-on measurement or a fixed-point measurement. Based on the detected result, the consumption amount of the first solid propellant is estimated.
Claims19
A 2-pulse gas generator comprising:
- a pressure vessel provided to have a combustion space therein;
- a first solid propellant arranged inside the pressure vessel, wherein a first end surface of the first solid propellant is exposed to the combustion space;
- a first igniter configured to ignite the first end surface of the first solid propellant;
- a barrier membrane provided to cover a surface of the first solid propellant other than a combustion surface such that a combustion surface of the first solid propellant moves to a predetermined first direction as the combustion of first solid propellant advances;
- a position sensor device configured to detect a position of the combustion surface in the first direction;
- and
- a processing device configured to estimate a consumption amount of the first solid propellant based on a detection result of the position of the combustion surface.
A method of measuring a propellant combustion surface position, comprising:
- arranging inside a pressure vessel, a first solid propellant, a surface of which other than a combustion surface is covered with a barrier membrane such that the combustion surface moves to a predetermined first direction as the combustion of the first solid propellant advances;
- igniting the first solid propellant by a first igniter;
- detecting a position of the combustion surface in the first direction by a position sensor device;
- and
- estimating a consumption amount of the first solid propellant based on a detection result of the position of the combustion surface by a processing device.
Dependencies are inferred from the claim text.