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HELIUM FOR WEIGHT SAVING ON AN AIRCRAFT

IP.com Disclosure Number: IPCOM000216631D
Publication Date: 2012-Apr-11
Document File: 4 page(s) / 89K

Publishing Venue

The IP.com Prior Art Database

Abstract

The disclosure describes a technical solution for saving weight on an aircraft. The solution describes the use of helium inside an aircraft. One embodiment of the solution provides for inflating aircraft tires with helium instead of nitrogen. Yet another embodiment of the solution is the use of helium-filled ballonets or helium-filled table tennis balls inside the airframe in unused spaces to obtain weight savings.

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Title/

HELIUM FOR WEIGHT SAVING ON AN AIRCRAFT

Abstract/

The disclosure describes a technical solution for saving weight on an aircraft.  The solution describes the use of helium inside an aircraft. One embodiment of the solution provides for inflating aircraft tires with helium instead of nitrogen.  Yet another embodiment of the solution is theuse of helium-filled ballonets or helium-filled table tennis balls inside the airframe in unused spaces to obtain weight savings.

Disclosure/

Many resources are utilized during aircraft development to resolve the problem of a “heavy aircraft”.  Aircraft manufacturers would like to obtain the lightest aircraft as possible.  One contributor to the weight problem in aircraft development is air in unused spaces.  The mass density of air is approximately 1.23 kg /m³ at 1 Bar.  The air transported on an aircraft in unused spaces accounts for a significant about of excess weight. 

Helium provides for a solution to this problem.  Helium provides about 1.05 kg Buoyancy / Lift in air per m3 due to its density of 0.18 kg/m3 (density difference between air and helium is 1.05 kg/m3).

This invention describes a solution for saving weight on an aircraft.  One aspect of the invention is to use helium-filled ballonets inside the airframe in unused spaces in prevent carrying air in unused aircraft spaces.

These ballonets could be implemented in all unused free space inside the aircraft fuselage. The solution could also be implemented using insulation inside the fuselage that is filled with helium to create lift.  This means it is possible to have aircraft insulation with negative weight.

Another aspect of the invention provides for the inflation of the aircraft tires with helium instead of nitrogen. 

Yet another aspect of the invention discloses passenger seat cushions containing helium-filled balloons and/or bags instead of the currently used foams.  This would also provide for seat cushions with negative weight.

It could be imagined to have a kind of helium-filled table tennis ball that is pressure tight & not changing its size due to different environmental pressure rates.  This helium-filled table tennis ball would have a "negative weight" due to its lift, and using this solution, all volumes of unused space inside the aircraft would be filled, providing the weight saving.

Such a solution would bring a weight saving as calculated of 150 kg per aircraft for larger-sized commercial aircraft:

For example:

Density of nitrogen: at 13.8 Bar: 16 kg/ m3 

Density of helium:   at 13.8 Bar: 3.4 kg/ m3 

Delta = 12.6 kg/ m3

22 tires with volume of 0.55 m3; in total 12.1m3,

12.1 m3 x 12.6 kg/m m3 = 152.46 kg saved

Helium is a inert gas that will not react with any other substance and will not burn.  Neutral helium at standard conditions is non-toxic, plays no biological role, and is found in trace amounts in human blood.

For its low solubility in nervous tissue, helium mixtures such as trimix, heliox, and heli...