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HEAT ROLL [7 records]

Record 1 2013-05-01

English

Subject field(s)
  • Trade Names
  • Spacecraft
CONT

StratSat provides a geo-stationary platform at 20 km altitude capable of remaining on-station for up to five years. Payloads include high speed Internet services, direct broadcast TV, mobile telecommunication, etc. The envelope operates as a super-pressure hull(i. e. with no ballonet pressure control system). The hull will be of laminated fabric construction with Tedlar/Teflon, helium/weather barrier developed from AT-10/04. Multiple catenary curtain system supporting a payload module enclosed completely by the envelope. [The] payload module... comprises a single structural module with an externally mounted payload/mission system. The payload module provides a home for all of the airship's primary systems except for the propulsion system. The systems are close packed within the highly insulated module ensuring efficient heat and energy management. The payload module is pendulum stabilised within the envelope. The solar array provides the sole source of renewable energy for the airship. The array is placed over the upper quarter of the hull and extends over approximately three-quarters of the length of the craft. The array can be realigned to the daily sun location/angle by the roll rotation of the whole airship. The energy collected by the solar array is stored for use during the night in the series of batteries. Located in the stored for use during the night in a series of batteries. Located in the payload module, the batteries run the propulsion system, airship services and provide power to the mission system for up to 14 hours(during winter). The airship is propelled and steered by means of a ’Contra-Rotating Coned Rotor’ mounted on a tailcone at the rear of the envelope, as a part of a compound propulsion system. The unit provides longitudinal thrust(to counter the prevailing stratospheric winds) and lateral force(for manoeuvering) to enable the airship to hold station within a 1 km cube. The airship will be equipped with a multi-channel Flight Control Sy

OBS

StratSat® is a registered trademark.

French

Domaine(s)
  • Appellations commerciales
  • Engins spatiaux
CONT

[...] le dirigeable géostationnaire britannique StratSat®, conçu par ATG (Advanced Technology Group) [est un] dirigeable souple d'environ 200 m de long pour 48 m de diamètre, [qui] devrait faire ses premiers vols vers 2005/2006 [...] Il pourra emporter 2 t de charge utile à 20 km d'altitude, avec une autonomie allant jusqu'à 5 ans. Pouvant se maintenir à poste avec une précision d'1 km³, il couvrira une surface au sol de 115 km de rayon.

Spanish

Save record 1

Record 2 2000-10-18

English

Subject field(s)
  • Paper Manufacturing Processes
DEF

Coverage of the web or streaks of the web with glazed, translucent spots. Due to excessive calender roll heat, calender pressure, poor formation or excessive and uneven moisture.

French

Domaine(s)
  • Fabrication du papier
DEF

Filet de teinte foncée qui se produit dans le papier, causé par une pression et un séchage inégaux, avant le calandrage.

Spanish

Save record 2

Record 3 1994-06-27

English

Subject field(s)
  • Papermaking Machines
  • Paper Manufacturing Processes
CONT

In contrast to the hard-nip machine calender, the supercalender characteristically converts part of the applied energy into heat through deformation of the soft rolls. Typically, about 25% of the drive power goes into roll heating. Until recently, this heating was viewed as undesirable because it reduced the life of conventional filled rolls. However, the development of modern "controlled temperature rolls" has made possible the utilization of heat for better control, particularly when optimizing production.

French

Domaine(s)
  • Machines à papier
  • Fabrication du papier
CONT

Contrairement à ce qui se passe dans un calandrage sur machine, une partie de l'énergie appliquée est transformée en chaleur lors de la déformation des rouleaux mous de la supercalandre. Environ 25 % de la puissance du moteur d'entraînement sont dégradés en chaleur dans les rouleaux. Pendant très longtemps, on a considéré cet échauffement comme un effet indésirable car il réduisait la durée de vie des rouleaux en papier. Mais la mise au point des rouleaux modernes à «température constante» a permis d'utiliser cette chaleur pour assurer une meilleure conduite du procédé, en particulier dans le cas d'optimisation de la production [...]

Spanish

Save record 3

Record 4 1993-12-21

English

Subject field(s)
  • Paper Manufacturing Processes
DEF

A method for rapid drying of paper using a simultaneous mix of pressing and drying processes, usually involving high nip loadings (dryer drum nips with a special roll).

CONT

Electrical impulse drying.... The water is removed through the application of instant heat and pressure/which forces the water from the paper web/on the paper machine. The water on the surface of the web "flashes"/to steam/because of the heated roll and then propels the liquid water from within the web/into the felt.

French

Domaine(s)
  • Fabrication du papier
OBS

Renseignement communiqué par l'Institut canadien de recherches sur les pâtes et papiers.

Spanish

Save record 4

Record 5 1991-06-11

English

Subject field(s)
  • Prepared Dishes (Cooking)
CONT

When the sugar is cool enough to handle, roll into a ball and pull with the fingers from the two sides, turning the ends over from side to side and into the center; pull all parts evenly... While shaping the puled sugar into fancy forms, it should be pulled near the heat of an oven...

French

Domaine(s)
  • Plats cuisinés

Spanish

Save record 5

Record 6 1989-11-01

English

Subject field(s)
  • Office Equipment and Supplies

French

Domaine(s)
  • Équipement et fournitures de bureau
OBS

Photocopie. Source : Xerox Canada Inc.

Spanish

Save record 6

Record 7 1988-10-31

English

Subject field(s)
  • Airborne Forces
  • Skydiving, Paragliding and Hang Gliding
DEF

A parachute malfunction in which a portion of the canopy material rolls itself up very tightly, preventing full inflation of the canopy.

OBS

A type of malfunction that occurs when a portion of the skirt blows between two of the suspension lines. Heat, generated by friction while the fabric is being rolled, may cause the nylon fabric to burn and fuse, forming a hard right roll.

French

Domaine(s)
  • Forces aéroportées
  • Parachutisme, parapente et deltaplane
DEF

Grave incident d'ouverture dans lequel la voilure ne se gonfle pas, mais reste allongée comme une flamme.

OBS

Défectuosité qui se produit quand une partie de la bordure s'engage entre deux suspentes. La chaleur causée par la friction du tissu qui s'enroule peut brûler et faire fondre le nylon, formant ainsi un rouleau dur.

Spanish

Save record 7

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