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Demisable fuel supply system

A fuel supply system, titanium-based technology, applied in the field of extinct fuel supply systems, can solve the problems of expensive and labor-intensive chemical compatibility and wettability of aluminum alloys

Active Publication Date: 2012-09-26
KEYSTONE ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Special surface treatments to increase the chemical compatibility and wettability of aluminum alloys used in GPM components are expensive, labor intensive and difficult to test in completed box constructions

Method used

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Embodiment Construction

[0010] National and international agreements have emphasized the end of the re-entry-atmosphere space flight from Low Earth Orbit (NEO) to minimize dangerous orbital debris. Controlled re-entry (where the spacecraft is sent into a trajectory with a predetermined landing site such as the ocean) has been a common practice accepted by the public in order to minimize damage to personnel or property. An uncontrolled return to the atmosphere requires the spacecraft to be completely burned (death) before impacting the ground. Due to the fuel saved by not having to position the spacecraft in the orientation of the proper trajectory during the controlled reentry, the extinct satellite space flight can be extended by up to several years.

[0011] It is for these reasons that the recent NASA Global Precipitation Measurement (GPM) satellite was the first to be designed according to the "design for extinction" (DfD) specification. In DfD design, low melting point metals and other materials i...

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Abstract

A demisable fuel supply system (10) for a satellite includes a pressurized aluminum alloy tank (12) with an aluminum alloy propellant management device (20,22) therein. The propellant management device (PMD) can have any capillary action surface tension fluid transport features known in the art. Selected inner surfaces of the tank and the PMD are covered with a titanium based coating to guarantee propellant wettability and corrosion resistance of the fuel supply system.

Description

Background technique [0001] Satellite fuel tanks are complex devices that use various measures to deliver fuel to the propulsion system of the spacecraft. In a zero-gravity or low-gravity environment, it is difficult to separate liquid from pressurized gas in order to deliver a sufficient amount of liquid to support the needs of space flight. Typically, this process is performed with a propellant management device (PMD), which uses surface tension and capillary action to transport liquid fuel. It is essential that the tank and PMD materials are compatible and wettable with liquid fuel chemicals (such as hydrazine). It is known in the art that materials such as titanium and titanium alloys are used for this purpose due to their high chemical compatibility and wettability with hydrazine and other propellants and oxidants used in fuel satellites. [0002] One requirement for low-Earth orbit satellites is to be able to reserve enough fuel for off-orbit operations at the end of their...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/44
CPCF05D2300/133F05D2230/90F02K9/605B64G1/402F05D2300/51F17C13/008F17C2201/0128F17C2201/054F17C2201/056F17C2203/0607F17C2203/0646F17C2203/0648F17C2203/0663F17C2209/221F17C2209/228F17C2221/08F17C2270/0194Y10T29/49888Y10T137/86212Y10T137/2931Y10T137/86348Y10T137/3127
Inventor W.H.塔特尔
Owner KEYSTONE ENG