Aircraft General Flashcards
Engines type, manufacturer, thrust?
TFE 731-2-2B turbofan engines
Manufacturer: Garret
Thrust: 3500 lbs at sea level (each engine)
Wingspan
Wingspan 39 feet 6 inches
Length
48 feet 7 inches
Height
12 feet 3 inches
Seating lear 35
Crew 2
Pax 8
Seating lear 36
Crew 2
Pax 6
Empty weight
10,120 lbs
Max fuel weight 35 and 36
Lear 35 6,238 lbs
Lear 36 7,440 lbs
Max takeoff weight 35 and 36
Lear 35 18,000 lbs
Lear 36 18,300 lbs
Ceiling
45,000 ft
Max cruise speed
451 knots
Range 35 and 36
Lear 35 2196 Nm
Lear 36 2500 nm
Takeoff distance
4972 feet
Landing distance
2600 feet
Type of wings
Swept back, cantilevered, all-metal wings
Type flaps
Single-slot fowler flaps
Stall fence
Strip on top of wing, inboard of the ailerons. It delays the disruption of airflow over the ailerons at high AOAs
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.
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.
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
- Integral wing tanks
- Tip tanks
- 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
- Cabin outflow valve
- Vacuum jet pump and regulator assembly
- Pressurization control module
- Cabin safety valve
Engine bleed air for anti ice
- Heats wings and horizontal stabilizer leading edges
- Heats windshield
- Heats nacelle lips
- Removes rain from windshield
Electrically heated anti ice systems
- Pitot tubes
- Static ports
- Pt2/ Tt2 sensors
- TAT probe
- Stal warning vanes
Alcohol anti-ice
- Radome anti-ice
2. Backup windshield anti ice
Hydraulic system supplies pressure for the operation of:
- Landing gear
- Onboard gear doors
- Brakes
- Flaps
- Spoilers
- 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
- Flight director
- Autopilot
- Yaw dampers
- Mach trim system
