Pyrotechnic energy conversion system for ejection assembly

Patent metadata

Field	Value
Publication number	US-11332254-B2
Application number	US-201916715475-A
Country	US
Kind code	B2
Filing date	Dec 16, 2019
Priority date	Dec 16, 2019
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

An energy conversion system may comprise a substrate including a first conductive trace and a second conductive trace electrically isolated from the first conductive trace. A housing may be coupled to the substrate. An ignition compound may be located in the housing. A solder may be thermally coupled to the ignition compound such that ignition of the ignition compound melts the solder. The housing may be configured to output the solder onto the first conductive trace and the second conductive trace.

First claim

What is claimed is:

1. An energy conversion system, comprising:
a substrate including a first conductive trace and a second conductive trace electrically isolated from the first conductive trace;
a housing coupled to the substrate;
an ignition compound located in the housing; and
a solder located in the housing.

2. The energy conversion system of claim 1 , wherein the ignition compound comprises a thermite.

3. The energy conversion system of claim 2 , wherein the solder is thermally coupled to the ignition compound such that ignition of the ignition compound melts the solder, and wherein the housing is configured to output the solder onto the first conductive trace and the second conductive trace.

4. The energy conversion system of claim 3 , wherein an orifice in the housing is oriented toward the first conductive trace and the second conductive trace.

5. The energy conversion system of claim 4 , further comprising:
a first conductive pad electrically coupled to the first conductive trace; and
a second conductive pad electrically coupled to the second conductive trace, wherein the orifice in the housing is oriented toward the first conductive pad and the second conductive pad.

6. The energy conversion system of claim 2 , further comprising a power supply electrically coupled to the first conductive trace.

7. The energy conversion system of claim 6 , wherein the power supply is thermally coupled to the ignition compound.

8. An assembly, comprising:
a pyrotechnic input configured to undergo an exothermic chemical reaction; and
an energy conversion system operationally coupled to the pyrotechnic input, the energy conversion system comprising:
a substrate including a first conductive trace and a second conductive trace electrically isolated from the first conductive trace;
a housing coupled to the substrate and the pyrotechnic input;
an ignition compound located in the housing and operationally coupled to the pyrotechnic input such that a combustion product of the exothermic chemical reaction of the pyrotechnic input ignites the ignition compound; and
a solder thermally coupled to the ignition compound.

9. The assembly of claim 8 , wherein the ignition compound comprises a thermite.

10. The assembly of claim 9 , wherein the solder is thermally coupled to the ignition compound such that ignition of the ignition compound melts the solder, and wherein the housing is configured to output the solder onto the first conductive trace and the second conductive trace.

11. The assembly of claim 10 , further comprising an actuator configured to initiate the exothermic chemical reaction of the pyrotechnic input.

12. The assembly of claim 8 , further comprising a power supply electrically coupled to the first conductive trace.

13. The assembly of claim 12 , wherein the power supply is thermally coupled to the ignition compound.

14. The assembly of claim 12 , further comprising a controller electrically coupled to the second conductive trace, wherein the controller is configured to receive a first electrical signal from the second conductive trace and output a second electrical signal a predetermined time delay after receiving the first electrical signal.

15. An ejection assembly, comprising:
an ejection seat;
an ejection handle configured to initiate an ejection sequence for the ejection seat in response to an actuation of the ejection handle;
a pyrotechnic input operationally coupled to the ejection handle, wherein the actuation of the ejection handle is configured initiate an exothermic chemical reaction within the pyrotechnic input; and
an energy conversion system operationally coupled to the pyrotechnic input, the energy conversion system comprising:
a substrate including a first conductive trace and a second conductive trace electrically isolated from the first conductive trace;
a housing coupled to the substrate and the pyrotechnic input;
an ignition compound located in the housing and operationally coupled to the pyrotechnic input such that a combustion product of the exothermic chemical reaction of the pyrotechnic input ignites the ignition compound; and
a solder thermally coupled to the ignition compound.

16. The ejection assembly of claim 15 , wherein the ignition compound comprises a thermite.

17. The ejection assembly of claim 16 , wherein the housing is configured to output the solder onto the first conductive trace and the second conductive trace.

18. The ejection assembly of claim 17 , further comprising a power supply electrically coupled to the first conductive trace.

19. The ejection assembly of claim 18 , further comprising a controller electrically coupled to the second conductive trace, wherein the controller is configured to receive a first electrical signal from the second conductive trace and output a second electrical signal a predetermined time delay after receiving the first electrical signal.

20. The ejection assembly of claim 19 , further comprising a catapult driver configured to ignite a propulsion system of the ejection seat, wherein the second electrical signal is configured to deploy the catapult driver.

Assignees

• Goodrich Corp

Inventors

• Rodriguez Jean C
• Lambert Jerry A

Classifications

• H05K2203/173

  Adding connections between adjacent pads or conductors, e.g. for modifying or repairing · CPC title

• F42D3/00 Primary

  Particular applications of blasting techniques {(explosive welding B23K20/08; explosive bolts or actuators F42B3/006; explosive valves F16K13/06; cutting devices actuated by explosion B23D15/145; pyrotechnical actuators F15B15/19; switching devices actuated by explosion H01H39/00)} · CPC title

• B64D25/10 Primary

  Ejector seats · CPC title

• H05K1/0201

  Thermal arrangements, e.g. for cooling, heating or preventing overheating · CPC title

• H05K1/0292

  having a modifiable lay-out, i.e. adapted for engineering changes or repair (H05K1/0293 takes precedence) · CPC title