초록 ▼

This jet engine comprises a complete low bypass turbofan unit 1 including secondary fan unit 2 and engine core, ahead of which sits a larger diameter main fan unit 3 driven from the front of the secondary fan via a long drive shaft 4. A center portion of the main fan feeds the secondary fan via long

This jet engine comprises a complete low bypass turbofan unit 1 including secondary fan unit 2 and engine core, ahead of which sits a larger diameter main fan unit 3 driven from the front of the secondary fan via a long drive shaft 4. A center portion of the main fan feeds the secondary fan via long central duct 5. The outer portion of the main fan is ducted into a split exhaust plenum chamber 6. This chamber has thrust vectoring exhaust mechanisms 7 immediately attached to each side, and then each side then feeds a thrust splitter 10, and then feeds to variable area outer ducting 8, using double-hinged inner and outer doors 9. Both outer ducts rejoin the central duct downstream in a second plenum chamber 11 just ahead of the secondary fan. Between this chamber and secondary fan is an intercooler 12.

대표청구항 ▼

This jet engine comprises a complete low bypass turbofan unit 1 including secondary fan unit 2 and engine core, ahead of which sits a larger diameter main fan unit 3 driven from the front of the secondary fan via a long drive shaft 4. A center portion of the main fan feeds the secondary fan via long

This jet engine comprises a complete low bypass turbofan unit 1 including secondary fan unit 2 and engine core, ahead of which sits a larger diameter main fan unit 3 driven from the front of the secondary fan via a long drive shaft 4. A center portion of the main fan feeds the secondary fan via long central duct 5. The outer portion of the main fan is ducted into a split exhaust plenum chamber 6. This chamber has thrust vectoring exhaust mechanisms 7 immediately attached to each side, and then each side then feeds a thrust splitter 10, and then feeds to variable area outer ducting 8, using double-hinged inner and outer doors 9. Both outer ducts rejoin the central duct downstream in a second plenum chamber 11 just ahead of the secondary fan. Between this chamber and secondary fan is an intercooler 12. tects that such a deceleration manipulation as to exceed an accelerator release velocity threshold value is carried out. 3. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 1, wherein the preliminary brake pressure application state determining section determines that the vehicle falls in the preliminary brake pressure application enabled state when the approaching state detector detects that the vehicle is approaching to the object and when the vehicular velocity variation rate manipulation situation detector detects that a deceleration manipulation is carried out from a state in which an accelerator manipulated variable detected by the vehicular velocity variation rate manipulation situation detector has exceeded an acceleration manipulated variable threshold value. 4. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 1, wherein the preliminary brake pressure application state determining section determines that the vehicle falls in the preliminary brake pressure application enabled state when the approaching state detector detects that the vehicle is approaching to the object and when the vehicular velocity variation rate manipulation situation detector detects that a deceleration manipulation is carried out from a state in which an acceleration manipulated variable detected by the vehicular velocity variation rate manipulation situation detector has exceeded an acceleration manipulated variable threshold value and that a velocity of the deceleration manipulation has exceeded an accelerator release velocity threshold value. 5. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 2, wherein the accelerator release velocity threshold value is set on the basis of a vehicular velocity of the vehicle and the preliminary brake pressure application start determining section comprises a vehicular velocity detector to detect a vehicular velocity of the vehicle, and the accelerator release velocity threshold value is set lower as the vehicular velocity becomes higher. 6. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 3, wherein the acceleration manipulated variable threshold value is set on the basis of a vehicular velocity of the vehicle and the preliminary brake pressure application start determining section comprises a vehicular velocity detector to detect the vehicular velocity of the vehicle, and the acceleration manipulated variable threshold value is set smaller as the vehicular velocity becomes higher. 7. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 3, wherein the acceleration manipulated variable threshold value is set on the basis of a vehicular velocity of the vehicle and the preliminary brake pressure application start determining section comprises a shift position detector to detect a shift position of a transmission of the vehicle, and the acceleration manipulated variable threshold value is set smaller as the shift position of the transmission becomes a lower speed range. 8. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 1, wherein the vehicular velocity variation rate manipulation situation detector comprises a detector to detect a manipulated variable of an accelerator pedal. 9. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 1, wherein the vehicular velocity variation rate manipulation situation detector comprises a detector to detect a longitudinal acceleration of the vehicle. 10. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 1, wherein the vehicular velocity variation rate manipulation situation detector comprises a detector to detect a shift position of a transmission of the vehicle. 11. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 1, wherein the preliminary brake pressure application start de termining section comprises a vehicular velocity detector to detect a vehicular velocity of the vehicle and the brake pressure generator determines the preliminary brake pressure from a characteristic table in accordance with the vehicular velocity of the vehicle at which the application of the preliminary brake pressure is started and a vehicular weight which is measured when the vehicle stops. 12. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 1, wherein the brake pressure generator generates the preliminary brake pressure as a predetermined constant preliminary brake pressure for a reference time duration. 13. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 1, wherein the brake pressure generator releases the development of the preliminary brake pressure when an acceleration manipulated variable detected by the vehicular velocity variation rate manipulation situation detector has exceeded an acceleration manipulated variable threshold value during the development of the preliminary brake pressure. 14. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 11, wherein the preliminary brake pressure is set to become larger as the vehicular velocity of the vehicle (V0) at which the application of the preliminary brake pressure is started becomes higher and to become larger as the vehicular weight becomes heavier. 15. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 1, wherein the approaching state detector detects whether the vehicle is approaching to the object on the basis of whether the relative distance (L) of the vehicle to the object is shorter than an approaching distance (L0) based on a relative velocity of the vehicle to the object and a differential value (dV) of an inter-vehicle distance from the vehicle to the object. 16. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 1, wherein the preliminary brake pressure application start determining section comprises: an opening angle sensor to detect an opening angle of an accelerator pedal; a deceleration manipulation velocity calculator to calculate an accelerator pedal returning velocity (dθREL) on the basis of an accelerator pedal release start opening angle (θREL), an accelerator pedal opening angle threshold value (θCLEAR) enabling for the accelerator pedal to be deemed to be released, and a time duration for the vehicular driver to release from the accelerator pedal; and a comparator to determine whether the calculated accelerator pedal returning velocity (dθREL) is equal to or larger than a release velocity threshold value (dθSET); and a control operation flag (Fc) representing that the preliminary brake pressure application is enabled and set when the accelerator pedal returning velocity is equal to or larger than the release velocity threshold value. 17. A preview brake controlling apparatus for an automotive vehicle as claimed in claim 9, wherein the preliminary brake pressure application start determining section comprises: an opening angle sensor to detect an opening angle of an accelerator pedal and an acceleration variation rate calculator to calculate an acceleration variation rate (dGREL) on the basis of an accelerator pedal release start acceleration (GREL), an accelerator pedal opening angle threshold value (GCLEAR) enabling for the accelerator pedal to be deemed to be released, and a time duration for the vehicular driver to release from the accelerator pedal; and a comparator to determine whether the calculated acceleration variation rate (dGREL) is equal to or larger than an acceleration variation rate threshold value (dGSET); and a control operation flag representing that the preliminary brake pressure application is enabled and set when the acceleration variation rate is equal to or larger than the acceleration variation rate threshold value. 18. A preview brake controlling m