Aircraft General Flashcards by M H

Engines type, manufacturer, thrust?

TFE 731-2-2B turbofan engines
Manufacturer: Garret
Thrust: 3500 lbs at sea level (each engine)

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Wingspan

Wingspan 39 feet 6 inches

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Length

48 feet 7 inches

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Height

12 feet 3 inches

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Seating lear 35

Crew 2

Pax 8

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Seating lear 36

Crew 2

Pax 6

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Empty weight

10,120 lbs

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Max fuel weight 35 and 36

Lear 35 6,238 lbs

Lear 36 7,440 lbs

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Max takeoff weight 35 and 36

Lear 35 18,000 lbs

Lear 36 18,300 lbs

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Ceiling

45,000 ft

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Max cruise speed

451 knots

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Range 35 and 36

Lear 35 2196 Nm

Lear 36 2500 nm

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Takeoff distance

4972 feet

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Landing distance

2600 feet

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Type of wings

Swept back, cantilevered, all-metal wings

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Type flaps

Single-slot fowler flaps

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Stall fence

Strip on top of wing, inboard of the ailerons. It delays the disruption of airflow over the ailerons at high AOAs

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Stall strip

A sharp protrusion at the wing root. It basically intentionally disrupts airflow at the ROOT at high AOAs, forcing the root to stall before the tip, thereby preserving aileron effectiveness.

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Critical Mach number

The speed where the air over the wing first reaches Mach 1.

This is bad because it creates a ton of drag.

It creates drag because Only a portion of that air is supersonic. As it continues down the back of the wing, it slows back down to subsonic. This creates a shockwave and wave drag.

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Why does a swept wing prevent wave drag?

Because only the airflow that’s parallel to the chord line accelerates. So by breaking that component into non-parallel, it reduces the overall amount of accelerating air. So it allows the PLANE to travel faster BEFORE the air over the wing exceeds Mach 1.

Electrical system: generators

Two engine-driven brushless generators
30 volts
400amps

Two inverters convert dc to ac

1000 volt-amps
Solid state
Single-phase
115 ac volts
400 Hz

Two batteries provide secondary source of dc power

Each battery connects to it’s respective hot-bus through a 20amp current-limiter for hot-wired circuits
located in tail cone
how many amps?
will power everything needed for night ifr flight for 30 minutes

Emergency battery system powers:

standby attitude gyro
landing gear
flaps

Fuel system

1. Integral wing tanks 2. Tip tanks 3. Bladder cells in fuselage tank

Total useable fuel

35: 6,238 lbs 36: 7,440 lbs

Each tip tank capacity

Without recog lights: 1215 lbs | With recog lights: 1175 lbs

Each wing tank

1254 lbs

Lear 35 fuselage tank

- 1340 lbs | - two rubber bladder fuel cells

Lear 36 fuselage tank

- 2542 lbs | - four rubber bladder fuel cells

How is the cabin pressurized?

Regulated engine bleed air from each engine’s compressor section is used to pressurize the cabin through an air-to-air heat exchanger, where it is cooled by ram air from the dorsal fun inlet

How is cabin temp regulated?

Cabin temp is regulated by the amount of bleed air allowed to bypass the heat exchange.

How is pressurization regulated?

- Pressurization is regulated by controlling the amount of air that is exhausted from the cabin. - controller module and an outflow valve

Four major components of pressurization system

1. Cabin outflow valve 2. Vacuum jet pump and regulator assembly 3. Pressurization control module 4. Cabin safety valve

Engine bleed air for anti ice

1. Heats wings and horizontal stabilizer leading edges 2. Heats windshield 3. Heats nacelle lips 4. Removes rain from windshield

Electrically heated anti ice systems

1. Pitot tubes 2. Static ports 3. Pt2/ Tt2 sensors 4. TAT probe 5. Stal warning vanes

Alcohol anti-ice

1. Radome anti-ice | 2. Backup windshield anti ice

Hydraulic system supplies pressure for the operation of:

1. Landing gear 2. Onboard gear doors 3. Brakes 4. Flaps 5. Spoilers 6. Dee Howard thrust reversers, if installed.

Two engine driven hydraulic pumps

Each pump supplies 1550psi +\- 25psi | -at 1700 psi, a pressure relief valve provides system protection

One electrical aux hydraulic pump

- draws from same reservoir - is unaffected by fire shutoff valve - can be used with both engines off

Landing gear

- retractable tricycle year - electrically controlled - hydraulically actuated

Emergency air bottle in right side of nose compartment

Can extend gear or provide air pressure for emergency braking in case of hydraulic or electrical failure

Nose gear

- Self-centering - single wheel - electrical nose wheel steering system that has variable authority depending on ground speed.

Each main gear

- dual wheels - multiple disc brakes - hydraulic braking is controlled from either pilot station - modulated anti skid system

Primary flight controls

- ailerons, rudder, elevators - manually actuated - pilot inputs are transmitted via cables, pushrods, bellcranks

Primary control trims

- Aileron, rudder, elevators | - electrically controlled

Secondary flight controls

- spoilers - flaps - electrically controlled and hydraulically actuated.

Automatic flight control system AFCS

1. Flight director 2. Autopilot 3. Yaw dampers 4. Mach trim system