GB1192364A - Improvements in or relating to Aircraft De-Icing and Anti-Icing Systems - Google Patents

Improvements in or relating to Aircraft De-Icing and Anti-Icing Systems

Info

Publication number
GB1192364A
GB1192364A GB23567/66A GB2356766A GB1192364A GB 1192364 A GB1192364 A GB 1192364A GB 23567/66 A GB23567/66 A GB 23567/66A GB 2356766 A GB2356766 A GB 2356766A GB 1192364 A GB1192364 A GB 1192364A
Authority
GB
United Kingdom
Prior art keywords
switch
temperature
input
current
aircraft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB23567/66A
Inventor
Keith Hugh Coles
Janus Stanislaw Orzechowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teddington Aircraft Controls Ltd
Original Assignee
Teddington Aircraft Controls Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Teddington Aircraft Controls Ltd filed Critical Teddington Aircraft Controls Ltd
Priority to GB23567/66A priority Critical patent/GB1192364A/en
Publication of GB1192364A publication Critical patent/GB1192364A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • G05D23/2401—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor using a heating element as a sensing element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D15/00—De-icing or preventing icing on exterior surfaces of aircraft
    • B64D15/12—De-icing or preventing icing on exterior surfaces of aircraft by electric heating
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
    • G05D23/1913—Control of temperature characterised by the use of electric means using an analogue comparing device delivering a series of pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

1,192,364. Protective arrangements. TEDDINGTON AIRCRAFT CONTROLS Ltd 29 Aug., 1967 [26 May, 1966], No. 23567/66. Heading H2K. [Also in Division G3] In an automatic temperature control system for the electrically heated mats 2, 4 of an aircraft de-icing system (see Division G2-G3), means are provided to automatically switch the system off upon the occurrence of excess temperature or current conditions. In the system each of a plurality of solid state switches 28 includes a transformer 34 whose core is chosen so that its Curie temperature coincides with the maximum allowable temperature of the thyristor 40 and diode 42 forming the switch. The transformers 34 are coupled secondary to primary in a chain and normally transmit high frequency firing pulses for the thyristors from a source 44 to AND gates 32 forming part of the control system. Should any one of the switches 28 become too hot, there is no output from the chain, no third input to any of the gates 32 and hence no firing pulses for the thyristors. When the temperature of the overheated switch falls, normal operation automatically resumes. Should the current through any switch 28 exceed a safe value, a respective over-current sensor 26 switches the system off by providing an input to a protection device 24 controlling the pulse width modulator 22 of the temperature control circuit. The device 24 has a second input from an arc detector 20 which detects out-ofbalance currents in the three phases in known manner and controls the device 24 to switch the system off. The over-current protection arrangement is reset by switching the system "off" and then "on" again.
GB23567/66A 1966-05-26 1966-05-26 Improvements in or relating to Aircraft De-Icing and Anti-Icing Systems Expired GB1192364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB23567/66A GB1192364A (en) 1966-05-26 1966-05-26 Improvements in or relating to Aircraft De-Icing and Anti-Icing Systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23567/66A GB1192364A (en) 1966-05-26 1966-05-26 Improvements in or relating to Aircraft De-Icing and Anti-Icing Systems

Publications (1)

Publication Number Publication Date
GB1192364A true GB1192364A (en) 1970-05-20

Family

ID=10197774

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23567/66A Expired GB1192364A (en) 1966-05-26 1966-05-26 Improvements in or relating to Aircraft De-Icing and Anti-Icing Systems

Country Status (1)

Country Link
GB (1) GB1192364A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2392877A1 (en) * 1977-06-02 1978-12-29 Lucas Industries Ltd Control system for aircraft deicing equipment - has control unit to activate separately switched electrically heated mats in turn with changeover at set temp. (NL 5.12.78)
GB2143095A (en) * 1983-07-09 1985-01-30 Westfaelische Metall Industrie Protecting electrical circuits with a load-switching component
EP0680878A1 (en) * 1994-04-13 1995-11-08 The B.F. Goodrich Company Electrothermal deicing system
CN114291270A (en) * 2021-12-10 2022-04-08 武汉航空仪表有限责任公司 A transmission of electricity structure for paddle anti-icing ice

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2392877A1 (en) * 1977-06-02 1978-12-29 Lucas Industries Ltd Control system for aircraft deicing equipment - has control unit to activate separately switched electrically heated mats in turn with changeover at set temp. (NL 5.12.78)
GB2143095A (en) * 1983-07-09 1985-01-30 Westfaelische Metall Industrie Protecting electrical circuits with a load-switching component
EP0680878A1 (en) * 1994-04-13 1995-11-08 The B.F. Goodrich Company Electrothermal deicing system
CN114291270A (en) * 2021-12-10 2022-04-08 武汉航空仪表有限责任公司 A transmission of electricity structure for paddle anti-icing ice

Similar Documents

Publication Publication Date Title
US3803455A (en) Electric circuit breaker static trip unit with thermal override
US3786311A (en) Circuit breaker and static trip circuit therefor
US3419757A (en) Overcurrent protective means
GB2244876A (en) A.C. Power controller with short circuit and overload protection
US3280374A (en) Electrical recycling circuit for controlling and protecting functional equipment
US3069555A (en) Automatic paralleling system
GB1120002A (en) Circuit-controlling systems
GB1192364A (en) Improvements in or relating to Aircraft De-Icing and Anti-Icing Systems
US3601680A (en) Dc-to-dc converter
GB1465721A (en) Ground fault detector
US4208691A (en) Control of inverter circuit-breaker
GB1262767A (en) Improvements in current limiting protective means
GB1424273A (en) Electrical protection system
JPH01500783A (en) Short-circuit protection devices for alternating current circuit networks and current-limiting circuit breakers suitable for such devices
GB1130636A (en) Improvements relating to voltage regulating circuits
US3739229A (en) Overcurrent sensing and restraint control for sectionalizing switch
GB1235921A (en) Battery chargers
GB1251965A (en)
US3371248A (en) Overcurrent protection apparatus
US3459941A (en) Instantaneous overload protector for an x-ray tube responsive to a combination of tube factor settings
US3596166A (en) Converter arrangement for alternating and direct current operation
DE3069057D1 (en) Overcurrent protective relais
US3434010A (en) Over current protector device for induction heating installation
GB1087564A (en) Improvements relating to electrical de-icing systems
US4099807A (en) Airborne pulse magnetron and power supply system

Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PLNP Patent lapsed through nonpayment of renewal fees