Methods and systems for detecting leakage in a thermal protection apparatus using a liquid crystal sheet

In an example, method of inspecting a thermal protection apparatus is described. The apparatus comprises a composite wall and a thermal insulation blanket, where the thermal insulation blanket is coupled to the wall by way of a sealant disposed around, and offset from, a perimeter of the composite w...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	De Pau-Jr., Robert, Siljee, David V
Format:	Patent
Sprache:	eng
Schlagworte:	AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION BLASTING COMBUSTION ENGINES COSMONAUTICS DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING ORREPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLYADAPTED FOR USE IN CONNECTION WITH AIRCRAFT HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFTCOMPONENTS, NOT OTHERWISE PROVIDED FOR HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS JET-PROPULSION PLANTS LIGHTING MEASURING MEASURING QUANTITY OF HEAT MEASURING TEMPERATURE MECHANICAL ENGINEERING PARACHUTES PERFORMING OPERATIONS PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR TRANSPORTING WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	In an example, method of inspecting a thermal protection apparatus is described. The apparatus comprises a composite wall and a thermal insulation blanket, where the thermal insulation blanket is coupled to the wall by way of a sealant disposed around, and offset from, a perimeter of the composite wall and disposed between the composite wall and the thermal insulation blanket, and where the wall, the thermal insulation blanket, and the sealant form a plenum chamber within the apparatus. The method includes pressurizing the plenum chamber with pressurized air, heating the pressurized air within the plenum chamber, and inserting a liquid crystal sheet between the wall and the thermal insulation blanket and proximate to a periphery of the sealant, where the liquid crystal sheet is configured to change color when heated pressurized air exits a gap in the apparatus and heats the liquid crystal sheet.