US2022178658A1PendingUtilityA1

Method of controlling ejection of a missile from a canister and system therefor

Assignee: ISRAEL AEROSPACE IND LTDPriority: Apr 11, 2019Filed: Mar 19, 2020Published: Jun 9, 2022
Est. expiryApr 11, 2039(~12.7 yrs left)· nominal 20-yr term from priority
F41F 3/04F41A 23/42F41A 27/30F41A 27/28F41G 3/14F42B 30/00F41G 7/007F41G 7/00
26
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Claims

Abstract

A method for reducing or eliminating “Missile Tip-off Effect” (MTE) of a missile ejected from a canister. The method includes: receiving data of desired canister state in response to a launch command. The method further include perform repeatedly until an MTE control criterion is met: (a) receiving, from a sensor associated with the canister, data of measured canister state, and (b) processing the data of the measured canister state and desired canister state, for outputting data indicative of a command to an actuator associated with the canister for modifying at least the angular position of the canister, thereby reducing or eliminating the (MTE) effect.

Claims

exact text as granted — not AI-modified
1 . A method for reducing or eliminating “Missile Tip-off Effect” (MTE) of a missile ejected from a canister comprising, by a processor and associated storage:
 a. receiving data indicative of desired canister state in response to a launch command, 
 perform repeatedly until an MTE control criterion is met: 
 b. receiving, from at least one sensor associated with the canister, data indicative of measured canister state; 
 c. processing at least said data indicative of measured canister state and desired canister state, for outputting data indicative of a command to at least one actuator associated with the canister for modifying at least the angular position of the canister; 
 thereby reducing or eliminating said (MTE) effect. 
 
     
     
         2 . The method according to  claim 1 , wherein said measured canister state includes measured canister angle and wherein desired canister state includes desired canister angle. 
     
     
         3 . The method according to  claim 1  or  2 , wherein said measured canister state includes measured canister rate and wherein desired canister state includes desired canister rate. 
     
     
         4 . The method according to  claim 3 , wherein said processing for outputting data indicative of said command complies with Equation 1: 
       
         
           
             
               
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         5 . The method according to any one of the preceding claims, wherein said measured canister state includes measured missile angle and wherein desired canister state includes desired canister angle. 
     
     
         6 . The method according to  claim 3 , wherein said measured canister state includes measured missile rate and wherein desired canister state includes desired canister rate. 
     
     
         7 . The method according to  claim 6 , wherein said processing for outputting data indicative of said command complies with Equation 2: 
       
         
           
             
               
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         8 . The method according to any one of the preceding claims, wherein the larger the difference between the desired canister state and the measured canister state, the larger is said command. 
     
     
         9 . The method according to any one of the preceding claims, wherein said measured canister state includes data indicate of remaining flight time of the missile in the canister, such that for the same difference in measured angle or rate vs. desired angle or rate, the shorter the remaining flight time, the larger the command. 
     
     
         10 . The method according to any one of the preceding claims, further comprising modifying on-the-fly said data indicative of desired canister state. 
     
     
         11 . The method according to any one of the preceding claims, wherein at least one of said sensors is fitted on the canister. 
     
     
         12 . The method according to any one of the preceding claims, wherein at least one of said sensors is fitted on the missile. 
     
     
         13 . The method according to any one of the preceding claims, further comprising an array of canisters. 
     
     
         14 . The method according to  claim 13 , wherein said data indicative of measured canister state is obtained by averaging the data indicative of the canister state of each canister of said array. 
     
     
         15 . A system for reducing or eliminating “Missile Tip-off Effect” (MTE) of a missile ejected from a canister comprising, a processor and associated storage configured to:
 receiving data indicative of desired canister state in response to a launch command, perform repeatedly until an MTE control criterion is met:
 a. receiving, from at least one sensor associated with the canister, data indicative of measured canister state; 
 b. processing at least said data indicative of measured canister state and desired canister state, for outputting data indicative of a command to at least one actuator associated with the canister for modifying at least the angular position of the canister;
 thereby reducing or eliminating said (MTE) effect. 
 
 
 
     
     
         16 . A non-transitory computer-readable memory tangibly embodying a program of instructions executable by the processor for executing the method of any one of  claims 1  to  14 .

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