SE500464C2 - Device for checking the function of a de-icing means - Google Patents

Device for checking the function of a de-icing means

Info

Publication number
SE500464C2
SE500464C2 SE9300258A SE9300258A SE500464C2 SE 500464 C2 SE500464 C2 SE 500464C2 SE 9300258 A SE9300258 A SE 9300258A SE 9300258 A SE9300258 A SE 9300258A SE 500464 C2 SE500464 C2 SE 500464C2
Authority
SE
Sweden
Prior art keywords
wing
container
wall
stabilizer
opening
Prior art date
Application number
SE9300258A
Other languages
Swedish (sv)
Other versions
SE9300258D0 (en
SE9300258L (en
Inventor
Tomas Bomgren
Soeren Jonsson
Karl-Johan Baeckgren
Bengt Neiglick
Kjell Ejdehage
Original Assignee
Saab Scania Ab
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 Saab Scania Ab filed Critical Saab Scania Ab
Priority to SE9300258A priority Critical patent/SE500464C2/en
Publication of SE9300258D0 publication Critical patent/SE9300258D0/en
Priority to PCT/SE1994/000049 priority patent/WO1994016944A1/en
Publication of SE500464C2 publication Critical patent/SE500464C2/en
Publication of SE9300258L publication Critical patent/SE9300258L/

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D15/00De-icing or preventing icing on exterior surfaces of aircraft
    • B64D15/16De-icing or preventing icing on exterior surfaces of aircraft by mechanical means
    • B64D15/166De-icing or preventing icing on exterior surfaces of aircraft by mechanical means using pneumatic boots

Abstract

A device for checking the function of deicing means (2, 5) for aircraft leading edges of wing and horizontal tail is described. The deicing means consists of at least one container, so-called "boot" whose volume can be increased through the supply of gas with overpressure relative to the surrounding atmosphere whose pressure is the same as in the aircraft wings and horizontal tails. The device consists according to the invention of an opening (8) in the external wall (16) of the wing or horizontal tail, covered with an at least somewhat elastic part (15) of the container wall. A sensor (10, 11) is arranged to sense occurring pressure difference between the internal cavity (13) of the container and the interior (14) of the wing and the horizontal tail, respectively, and to emit a corresponding signal.

Description

m ,^_, ' ,L',--» al lflíatn hàllarens inre hàlrnm den vingens resp. stanilisazora- _r_- den att avge mntsvarande signal. Qm en sådan tryckiíffç tillräcklig sterler, exempelvis 359 këa, indireras, :_ säkerhet, att behållaren verkligen ëkar sin vaiyr, så -rss avlägsnas. Givetvis är sensorn förbunden me? någe: vi ____ U strnment eller liknande inne 1 ceckpit, så att pirate» direkt kvittering pà sin aktien att öka trycket i av organen. Dvan nämnda elastiska del av behállarens vägg äendve: bara vara sà elastisk, att en sensør förmår indikera en ut- buktning- l en fördelaktig utföringsferm av anerdningen enligt app- finningen består den nämnda sensdrn av en relativt styv men böjlig platta uppbärande en trådtöjningsgivare, varvid plattan är fixerad relativt den nämnda ytterväggen, inrättad att vara mekaniskt pàverkbar av den de av avisningserganets elastiska vägg, sem befinner sig över den nämnda öppningen, iarvid tråd- 1 beroende av töjningsgivaren är inrättad att avge en signal förekommande tryckdifferens mellan behàllarens inre nålram den vingens resp. stabilisatorns inre. m, ^ _, ', L', - »al l fl íatn hàllarens inre hàlrnm den vingens resp. stanilisazora- _r_- it to emit the corresponding signal. If such a sufficient pressure sterile, for example 359 këa, is insured, that the container really increases its vaiyr, so -rss is removed. Of course the sensor is connected to me? something: we ____ U strnment or similar inside 1 ceckpit, so that pirate »direct receipt of his share to increase the pressure in of the organs. The said elastic part of the wall of the container may also be so elastic that a sensor is capable of indicating a bulge. the plate is fixed relative to said outer wall, arranged to be mechanically actuated by that of the elastic wall of the de-icing member, which is above said opening, wherein wire-dependent on the strain sensor is arranged to emit a signal resp. the interior of the stabilizer.

Anerdningen enligt uppfinningen beskrives i det följande när- mare med hänvisning till de bifogade figurerna, av vilka figur l schematiskt visar ett flygplan i perspektiv, med markering av de delar av vingar den stabilise- terer, sem är utsatta för ísbildning, figur 2 schematiskt och i perspektiv visar en del av ett avisningsorgan på en vingframkant, med ett fler- tal behållare, d v s "boots" figur 3 schematiskt och i perspektiv visar en del av en behållare på en vinges yttervägg med en öppning för montering av en platta med trådtö§níngs~ givare, medan figur 4 schematiskt visar ett längdsnitt genom (i) “n vi.ge e yttervägg med öppning och ett avisningsorgan~ ir) (I. elastiska vägg på ena sidan och en platta me trådtöjningsgivare på den andra sidan. -y- (12 I figur 1 visas ett flygplan med vingar l och stabilísator 3, 4. På vingarnas framkanter är anordnade avisningsorgan 2, M1 och på stabilisatorerna avisningsorgan 5; Dessa består, so” ß I framgår av figur 2, av ett antal långsträckta behållare, s r "boots " 6 inrättade parallellt bredvid varandra. I figur 3 visas en del av en sådan behållare 6 fastlimmad på vingens l yttervägg 7, i vilken en öppning 8 tagits upp. Behållaren är tillverkad av syntet- och naturgummí samt väv, och en del av behållaren som sträcker sig över öppningen 8 uppvisar en mått- lig men dock elasticitet. En plugg 9 av relativt hårt gummi visas, avsedd att föras in öppningen B med uppgift att :ör- medla mekanisk tontakt mellan behållarens del över öppningen och en platta l© med en trådtöjningsgivare ll, sonematiskt vi- F- < sad i förbindelse med ett indikerande instrument «2. av figur FJ 4 framgår tydligare sensorn för avkänning av förekommande ed l3 Éà tryokdifferens mellan behällarens inre hålrum, markerat och vingens inre 14, vilket som redan nämnts står i förbin~ â-'ïïw-n. -delse med den omgivande atmosfären, så att atmos_a-strytk råder här. Behållarens något elastiska vägg anges med 15 âiattaa id står i fast förbindelse med viageaa yeaerfagg. så ett övertryck, exempelvis av storleksordningen ISG k?a leces e till en behållare, uppkommer, i den mån detta öv rtrytr för- medlas oförhindrat till behållaren, en tryckdífferens :ellen behållarens inre hàlrum 13 och vingens inre 14, vilket :arke- ras med pilar 16 i figur 4. Tràdtöjningsgivaren ll påverkas eftersom plattan 1© utsättes för en viss, Gm en liten böjning, och en signal avgår till instrumentet 12, vísafide at: ett. övertryck rader i behållaren, vilket ä en säker índikatíøn, behållaren 6 inre hàlrum utsatts för övertryck øch att is knäcks bort från vingens framkant, eller i förekcmmande fall en stabilisators framkant.The device according to the invention is described in more detail below with reference to the accompanying figures, of which Figure 1 schematically shows an aircraft in perspective, with marking of the parts of wings it stabilizes which are exposed to ice formation, Figure 2 schematically and in perspective shows a part of a de-icing member on a wing leading edge, with a plurality of containers, ie "boots" figure 3 schematically and in perspective shows a part of a container on the outer wall of a wing with an opening for mounting a plate with wire rope sensor, while Figure 4 schematically shows a longitudinal section through (i) a outer wall with opening and a de-icing member (I. elastic wall on one side and a plate with wire strain gauge on the other side. Figure 12 shows an airplane with wings 1 and stabilizer 3, 4. De-icing means 2, M1 are arranged on the leading edges of the wings and de-icing means 5 are arranged on the stabilizers; these consist, as shown in Figure 2, of a number of elongate containers, s r "boots" 6 arranged parallel next to each other. Figure 3 shows a part of such a container 6 glued to the outer wall 7 of the wing 1, in which an opening 8 is taken up. The container is made of synthetic and natural rubber and fabric, and a part of the container that extends over the opening 8 shows a moderate but elasticity. A plug 9 of relatively hard rubber is shown, intended to be inserted into the opening B with the task of: facilitating mechanical tone contact between the part of the container over the opening and a plate l © with a wire strain gauge ll, sonematically shown in connection with a indicative instrument '2. Figure FJ 4 shows more clearly the sensor for sensing the occurring ed l3 Éà pressure difference between the inner cavity of the container, marked and the inner 14 of the wing, which, as already mentioned, is connected ~ â-'ïïw-n. sharing with the surrounding atmosphere, so that atmos_a-strytk prevails here. The somewhat elastic wall of the container is indicated by 15 âiattaa id is in fixed communication with viageaa yeaerfagg. so an overpressure, for example of the order of ISG k? a leces e to a container, arises, in so far as this overpressure is transmitted unhindered to the container, a pressure difference: or the inner cavity of the container 13 and the inner 14 of the wing, which: with arrows 16 in FIG. overpressure rows in the container, which is a safe indication, the inner cavity of the container 6 is subjected to overpressure and that ice is broken away from the leading edge of the wing, or if applicable a stabilizing leading edge.

Den i figurerna 3 och 4 visade anordníngen enligt uppfinnínge- utgör endast ett uföringsexempel, och andra sensører är tänt- bara inom nppfinningens ram.The device according to the invention shown in Figures 3 and 4 is only an exemplary embodiment, and other sensors are ignitable within the scope of the invention.

Claims (1)

1. U: azcriring --_ ;;;:;;-; a. re"¿;rs~ev HH, arean. nestàenne av éfmznsfnne en iawçafreffr «~<~» ~~» vilken ar inrattaa att reversibelt ska a;n v:l:~ .zíer i~~ rf-:Lacnn c.- 2:.. Lp.-- Lfi.”¿¿:-'....à¿t;'1_: _.'.~:._. .'-c.-L“;.'.1l., \-J. Lai; QLS, rekommande tryckdifferens mellan benaílarens (133 ech vingens resp. stabiíisaterns inre alá), avge motsvarande signal. Anordning enligt krav 1, k ä n n e t c k n a d a v _ att den nämnda sensorn består av en relativt st lig platta (10) uppbärande en tràdtöjningsgivare (Li), varvid plattan är fixerad relativt den nämnda yttervägg n ¶7), avisningsorganets men de .J fi! ) inrättad att vara mekaniskt påverkbar av v elastiska vägg (15), sem befinner sig över den nämnda öppningen (8), varvid tràdtöjníngsgivaren Kil» är inrättad att avge en signal i berøende av före- kommande tryekdifferens mellan behàllarens inre håïrum een vingens resp, stabilisatørns inre.1. U: azcriring --_ ;;;: ;; -; a. re "¿; rs ~ ev HH, arean. nestàenne av éfmznsfnne en iawçafreffr« ~ <~ »~~» which ar inrattaa att reversibelt ska a; nv: l: ~ .zíer i ~~ rf-: Lacnn c. - 2: .. Lp .-- L fi. ”¿¿: -'.... à¿t; '1_: _.'. ~: ._. .'- c.-L“;. '. 1l LL; QLS, the recommended pressure difference between the internal signal (133 of the wing or the stabilizer of the wing or the stabilizer), respectively, emits a corresponding signal. Device according to claim 1, characterized in that said sensor consists of a relatively stable plate ( 10) supporting a wire strain gauge (Li), the plate being fixed relative to said outer wall n ¶7), the deicing means but the .J fi!) Arranged to be mechanically actuated by elastic wall (15) located above said opening (8), wherein the wire strain gauge Kil 'is arranged to emit a signal due to the difference in pressure between the inner hairs of the container and the interior of the wing or stabilizer.
SE9300258A 1993-01-28 1993-01-28 Device for checking the function of a de-icing means SE500464C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9300258A SE500464C2 (en) 1993-01-28 1993-01-28 Device for checking the function of a de-icing means
PCT/SE1994/000049 WO1994016944A1 (en) 1993-01-28 1994-01-25 Deicing means device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9300258A SE500464C2 (en) 1993-01-28 1993-01-28 Device for checking the function of a de-icing means

Publications (3)

Publication Number Publication Date
SE9300258D0 SE9300258D0 (en) 1993-01-28
SE500464C2 true SE500464C2 (en) 1994-06-27
SE9300258L SE9300258L (en) 1994-06-27

Family

ID=20388688

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9300258A SE500464C2 (en) 1993-01-28 1993-01-28 Device for checking the function of a de-icing means

Country Status (2)

Country Link
SE (1) SE500464C2 (en)
WO (1) WO1994016944A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2782700B1 (en) 1998-08-31 2001-04-20 Crown Cork & Seal Tech Corp INVIOLABILITY CAP FOR CONTAINER NECK

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2883129A (en) * 1955-04-19 1959-04-21 Bendix Aviat Corp Pressure and vacuum system for operating inflatable elements
US3720388A (en) * 1970-03-06 1973-03-13 Airborne Mfg Co Method of and apparatus for controlling a deicer boot system
US3891164A (en) * 1973-11-19 1975-06-24 Thomas P Hertrick Duplex valve
US5160102A (en) * 1991-10-28 1992-11-03 The B. F. Goodrich Company Controller valve for deicer

Also Published As

Publication number Publication date
SE9300258D0 (en) 1993-01-28
SE9300258L (en) 1994-06-27
WO1994016944A1 (en) 1994-08-04

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