Jet system

Patent metadata

Field	Value
Publication number	US-10883449-B2
Application number	US-201715466123-A
Country	US
Kind code	B2
Filing date	Mar 22, 2017
Priority date	Mar 23, 2016
Publication date	Jan 5, 2021
Grant date	Jan 5, 2021

Abstract

Provided is a jet system capable of regulating a pressure of a jet substance without using any high-pressure gas supply subsystem. In a storage section for storing therein a jet substance such as fuel or oxidizer, a pressurizing substance such as liquefied gas is stored in addition to the jet substance, to enable the jet substance to be supplied from the storage section according to pressurization from the pressurizing substance. A jet operation is performed while an internal pressure of the storage section lowered along with discharge of the jet substance therefrom is at least partially recovered by at least a part of the pressurizing substance vaporized in the storage section.

First claim

The invention claimed is:

1. A jet system operating method comprising:
providing a storage section and storing therein a jet substance and a pressurizing substance that is a different substance than the jet substance, wherein the jet substance and the pressurizing substance are mixed with each other;
creating, by a jet flow creation section, a jet flow using the jet substance stored in the storage section; and
jetting, by a jet port, the jet flow created by the jet flow creation section,
wherein the pressurizing substance is capable of being at least partially vaporized in the storage section to thereby pressurize an inside of the storage section.

2. The jet system operating method as recited in claim 1 , wherein a heat capacity of the jet substance is greater than a heat capacity of the pressurizing substance.

3. The jet system operating method as recited in claim 1 , wherein the storage section stores therein a second pressurizing substance for pressurizing the inside of the storage section.

4. The jet system operating method as recited in claim 1 , further comprising:
controlling, by a temperature control section, an internal temperature of the storage section to cause the pressurizing substance to be vaporized.

5. A jet system operating method comprising:
providing a first storage section and storing therein a first jet substance and a first pressurizing substance that is a different substance than the first jet substance, wherein the first jet substance and the first pressurizing substance are mixed with each other;
providing a second storage section and storing therein a second jet substance and a second pressurizing substance that is a different substance than the second jet substance, wherein the second jet substance and the second pressurizing substance are mixed with each other;
creating, by a jet flow creation section, a jet flow using the first jet substance stored in the first storage section and the second jet substance stored in the second storage section; and
jetting, by a jet port, the jet flow created by the jet flow creation section, wherein each of the first pressurizing substance and the second pressurizing substance is capable of being at least partially vaporized in a corresponding one of the first storage section and the second storage section to thereby pressurize a corresponding one of an inside of the first storage section and an inside of the second storage section.

6. The jet system operating method as recited in claim 5 , wherein the first jet substance is a fuel, and the second jet substance is an oxidizer, and wherein the jet flow creation section is configured to mix the fuel and the oxidizer together to thereby combust the fuel to create the jet flow.

7. The jet system operating method as recited in claim 5 , wherein
a heat capacity of the first jet substance is greater than a heat capacity of the first pressurizing substance, and
a heat capacity of the second jet substance is greater than a heat capacity of the second pressurizing substance.

8. The jet system operating method as recited in claim 5 , wherein
the first storage section stores therein a third pressurizing substance for pressurizing the inside of the first storage section, and
the second storage section stores therein a fourth pressurizing substance for pressurizing the inside of the second storage section.

9. The jet system operating method as recited in claim 5 , which comprises:
controlling, by a first temperature control section, an internal temperature of the first storage section to cause the first pressurizing substance to be vaporized, and controlling, by a second temperature control section, an internal temperature of the second storage section to vaporize the second pressurizing substance.

10. A jet system operating method comprising:
preparing 1st to n-th storage sections, each of the 1 st to n-th storage sections defined as a k-th storage section containing a k-th jet substance and a k-th pressurizing substance that is a different substance than the k-th jet substance, where k is an integer selected from 1 to n (where n is an integer of 2 or more) and is assigned in ascending order to each of the 1st to n-th storage sections, wherein the k-th jet substance and the k-th pressurizing substance are mixed with each other;
creating, by a jet flow creation section, a jet flow using each respective k-th jet substance stored in each of the 1st to n-th storage sections; and
jetting, by a jet port, the jet flow created by the jet flow creation section, and
wherein each k-th pressurizing substance is capable of being at least partially vaporized in a corresponding one of the 1st to n-th storage sections to thereby pressurize an inside of the corresponding one of the 1st to n-th storage sections.

Assignees

• Japan Aerospace Exploration

Inventors

• Mori Osamu
• Kawaguchi Junichiro
• CHUJO Toshihiro

Classifications

• F02K9/56 Primary

  Control · CPC title

• F02K9/58

  Propellant feed valves · CPC title

• F02K9/44

  Feeding propellants · CPC title