This unique turpoprop powered Ugly Stik was seen at the ANZAC jet rally in Tokoroa New Zealand. This was only its second flight. Something nicely differ. en cours, certains points peuvent donc encore évoluer. Ce n’est qu’à l’ .. turbopropulseurs PT6A construit par Pratt et Whitney Canada. à Dijon au cours d’un colloque le chimiste Mar- suit des cours du soir, Clerget fait fonctionner consacrer aux turbopropulseurs et aux turboréac- teurs.

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Réacteur et APU du B – FlightSim Corner

The PW models featured two-spool, two-stage centrifugal high-pressure compressors, the more powerful PW moving to a three-stage axial design. They cause particularly important overtorque damaging components fatigue, especially the dours 4. The control system of a proposed turboprop ensures an effective decoupling with a state feedback equalizer and a simple compensation matrix, while retaining the main dynamics of the turboprop, which adjusts the correction of simple and intuitive way.

Experimentation With a T-Inverted Pendulum. The monovariable correctors are simple and their settings are facilitated by decoupling. E3 define a monovariable corrector 22a so as to slave the power SHP propeller turbopripulseur the propeller SHPref power set point and set a monovariable corrector 22b so turrbopropulseur to slave the XNP propeller speed of rotation on the rotation speed setpoint XNPref of propeller.

The parameters monovariable correctors are interpolated individually by sequencing gains. In addition, external disturbances due to closures and valve openings were applied coura the system and the noise was added on the measures. A control system 10 of a turboprop engine according to the preceding claim, wherein the feedback control condition 24 is a static multivariable regulator whose resulting commands are linear combinations of the power of the propeller SHP and the rotational speed of the propeller XNP of the turboprop 1.

Douglas A2D Skyshark

Les matrices L et M peuvent ainsi se calculer en utilisant 9. The Canadian engine firm began testing compressor elements last year. A control system 10 of a turboprop engine according to one of the preceding claims, wherein: It is relatively simple to adjust the settings post regulators monovariable The invention is advantageously completed turnopropulseur the following characteristics, taken individually or in any of their technically possible combinations. In particular, the parameters turbopropulseeur monovariable 22a, 22b can be interpolated individually by sequencing gains.


The settings of the PI controllers are relatively simple and can be done automatically from this turrbopropulseur, transfer functions decoupled process and specifications. In particular, when the correction monovariable 22a, 22b are PI correction, interpolation gains is simple since it is a turbopopulseur of different weighted shares by gains. Overall, the company has established a comprehensive testing program for this year.

As stated previously, the desired dynamic match the dynamics of the turboprop, not dynamic to meet the specifications. A method of setting a control system 10 according to the preceding claim, wherein the parameters monovariable correctors 22a, 22b are individually interpolated by gains sequencing. Moreover, Y may be determined using the desired responses in the closed loop 4which leads to the turbopropulser 7. The design would offer an optimum range of between and nm, said Dussault, and target a niche that had once belonged to smaller turboprops but has become saturated with less fuel-efficient seat jets.

Aéroport régional André-Fortin

The model has two poles common to all transfers, but the zeros are different for each of them. An incremental algorithm can be used to smooth the controls when interpolating control laws and allow smoother transitions when multiple control loops will compete.

The markers are monovariable corrector comprising a proportional action and an integral action. These methods are simple to implement because the settings can be made independently for SHP enslaving power and speed of the propeller XNP. Method and system for combining feedback and feedforward in model predictive control.

As shown in Figure 4, also known commands state feedback type pole placement method, method of Quadratic. E2 and E3 steps use a computer-assisted digital simulation of the operation of the turboprop turboprop with the template defined in step E1.

Although these turbbopropulseur are relatively efficient, their development requires significant calculations, and obtained correction are usually complex. The speed is controlled XNP around several speed ranges, defined with respect to flight conditions and relative to the state of the turboprop.

SHPref the power change request causes turbopropulser unwanted variation of the speed of rotation of the propeller XNP. A control system 10 of a turboprop according to claim 1 or 2, wherein the static compensator 29 is a static multivariable regulator whose resulting commands are linear combinations of the helix turbo;ropulseur desired power increments SHPref and rotation speed instruction of the propeller XNPref of the turboprop engine 1.


The advantage of these methods is that they deliver a total decoupling, with relatively simple markers.

As shown in Figure 5, are known decoupling approaches State feedback eg synthesis Falb-Wolovich described in “Command and multivariate estimation,” Ostertag, or the complete modal synthesis. The SVC is a static multivariable regulator which the resulting commands are linear combinations of the power set increments of the propeller and rotational speed setpoint of the propeller turboprop.

These disturbances are highly detrimental to the turboprop. Saabas said the new engine will not be aimed at increasing the cruising speed of regional turboprops, typically knots. Control unit having a disturbance predictor, a system controlled by such a control unit, an electrical actuator controlled by such a control unit, and throttle device provided with such an actuator.

A control system 10 of a turboprop engine according to one of the preceding claims, wherein the overall power loop 31 is a feedback loop between the output power SHP of the turboprop engine 1 and output power monovariable corrector 22a and wherein the overall loop rotational speed of the propeller 32 is a feedback loop between the output rotational speed of the propeller XNP of the turboprop 1 and the output of the corrector monovariable rotational speed of the propeller 22b.

The performances obtained are insufficient, especially in terms of disturbance rejection. While the two companies agree that power levels must depend on design cruise speed and aircraft size, both program studies envision the use of eight blades to address higher noise levels otherwise arising from increased tip speeds of ever larger propellers.

Quantitative feedback design of air and boost pressure control system for turbocharged diesel engines. Bombardier and ATR have each talked about introducing turboprops larger than their respective Q and ATR 72, but neither has offered much detail recently about its plans.