System and method for emergency starting of an aircraft turbomachine

Patent metadata

Field	Value
Publication number	US-9951694-B2
Application number	US-201415022101-A
Country	US
Kind code	B2
Filing date	Sep 12, 2014
Priority date	Sep 19, 2013
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

An emergency start system for a turbine engine of an aircraft including at least one solid propellant gas generator, an electrically controlled ignition device, a computer connected to the ignition device, and at least one starter motor comprising a turbine for driving a shaft which is for coupling to a shaft of the turbine engine The outlet of the gases from the generator are connected to the inlet of the turbine of the starter motor.

First claim

The invention claimed is:

1. Emergency start system for at least two turbine engines of an aircraft, which comprises:
at least one solid-propellant gas generator,
an electrically controlled ignition device,
a computer connected to the ignition device,
a distribution valve connected to the computer, and
at least two independent starter motors,

wherein, each independent starter motor is intended for starting one correspondent turbine engine, each starter motor comprising a turbine for driving a shaft, the shaft for coupling to a shaft of the corresponding turbine engine, a gas outlet from the generator being connected by the distribution valve to an inlet of the turbine of each starter motor.

2. System according to claim 1 , wherein the output of the turbine of each starter motor is connected to an exhaust.

3. System according to claim 1 , wherein the turbine of each starter motor comprises a single rotor wheel.

4. System according to claim 1 , wherein the system comprises coupling elements for coupling the shaft driven by the turbine to the shaft of the turbine engine, said coupling elements including a freewheel designed to transmit a driving torque only when said torque comes from the starter motor.

5. Aircraft comprising at least two turbine engines, which comprises an emergency start system according to claim 1 .

6. Method for emergency starting a turbine engine of an aircraft with a system according to claim 1 , comprising:
detecting an emergency start situation,
activating the ignition device by the computer as soon as the emergency start situation is detected.

Assignees

• Snecma
• Turbomeca
• Herakles
• Safran Aircraft Engines
• Safran Helicopter Engines

Inventors

• Thiriet Romain
• Marconi Patrick
• Serghine Camel
• Caratge Antoine Marie Georges
• Danguy Francois
• Fabbri Laurent
• Yvart Pierre
• Soulie Laurent
• Barrat Philippe

Classifications

• F01D19/00

  Starting of machines or engines; Regulating, controlling, or safety means in connection therewith (warming-up before starting F01D25/10; turning or inching gear F01D25/34) · CPC title

• B64D27/10

  of gas-turbine type  (jet aircraft B64D27/16) · CPC title

• F02C7/277 Primary

  the starter being a {separate} turbine · CPC title

• F05D2260/85

  Starting · CPC title

• Y02T50/672

  Cross-Sectional Technologies · mapped topic