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shnee
18th Aug 2005, 04:50
G'day all,
Does anyone know where I could get some info on the 35/36 and it's systems.

Thanks in advance

Shnee

LearjetGA
18th Aug 2005, 06:53
What would you like to know? Performance? Systems? Are you going for a type? Are you upgrading your Lear to RVSM, TAWS, TCAS?

Here is something for the general knowledge:

Basic

All metal, low wing twin-engine jet plane with retractable landing gear. Powered by two Garrett TFE 731 rated at 3500 lbs of thrust. Pressurized, seat 8 to 10 people. FAR Part 25 certified, two pilots, 45000 ft

Structures

High strength aluminum alloy, plus steel and glass fiber. During testing, all load bearing members and surfaces demonstrated the capability to carry 90 % of the G forces with an adjacent structural component failed.

Length: 48 ft 7 in
Height: 12 ft 3 in
Wingspan: 38 ft 1 in
Main Gear span: 8 ft 3 in

Fuselage

Constructed in stressed all-metal skin with transverse frames and stringers. Four basic sections:
- nose section: cone to forward pressure bulkhead
- Pressurized section: cockpit to rear pressure bulkhead
- Fuselage fuel section: aft of rear pressure bulkhead to tailcone
- Tailcone section to aft of the fuel section

Nose Section

Formed by the radome, access panels on top, hosts avionics, emergency air bottle an alcohol anti-icing reservoir.

Pressurized Section

Cockpit and Passenger section. Forward of the aft bulkhead is baggage compartment, limited to 500 lbs
Passenger and crew door is a clamshell door on the left side of the fuselage. Standard is 36 in wide, optional is 24 in. Upper door is an emergency exit and has outside and inside locking handles, locks with 6 pins in the fuselage and two with the other door. Lower door has a single locking handle on the inside, 2 locking pins in the fuselage. Total 10 locking pins. Electric actuator helps engagement of the upper door, torque tube assembly and one or two hooks. (1 for the 24 in door) Secondary latch is provided to prevent door from falling when unlocked. Red DOOR light remains on until upper hooks are backed away, one of the 10 latches is not engaged or unsafe for take-off.. Key switch is provided but not used in normal operation. Neoprene seal surrounds and provides positive seal.
Emergency exit is on the aft rear side. Latch handle on the top of the window. From exterior push button above window.
Windshield is in two sections, three laminated layers of acrylic plastic, one in. thick. Tested for 4 lbs bird at 350 kts.
Pax Windows are 6 to 9 nine small dual-pane acrylic plastic windows.

Fuel Section

Fuselage tank contains 2 bladder cells.

Tail Cone Section

Tailcone, aka Hell Hole Door, entry door is located at the bottom. Quick release thumb hatches provide locking. Access to Batteries, Fire extinguisher, Hydraulic reservoir, Fuel Filters, Fuel Computers, Air Conditioning, Electrical Components. No cockpit indication if door is not closed.

Wing

Sweptback, cantilevered, all-metal wing. Integral fuel tank through most of the wing.
Eight fittings attach wing to fuselage. Ailerons attached to the rear spar by three hinge points. Single slotted flaps are attached to the inboard rear spar by tracks, rollers and hinges. Tip tanks attached by two points.
The Learjet 35 wing is fitted with either vortex generators or boundary layer energizers

Empennage

T Tail, variable horizontal stabilizer with attached elevators. Electrical jackscrew pivots stabilizer for longitudinal trim. Oxygen bottle is in dorsal fin.

Airplane Systems

Electrical Power Systems

Two engine driven generators and two 24v battery power, one or more emergency battery. Can accept DC power from GPU.
Lighting
Glareshield warning light system has three rows of red, amber and green lights.

Fuel System

Integral wing tanks and a bladder tank aft of rear pressure bulkhead. Fueling is accomplished through filler caps on tip tanks.



Powerplant

Two Garrett TFE 731 engines. It’s a lightweight, two-spool, front fan-jet engine. It has a reverse flow annular combustion chamber, which reduces the overall length and results in more efficient combustion and cooler external surfaces of the turbine section.

Ice and Rain Protection

Uses bleed air, electric heating and alcohol.
Bleed for wing leading edge, horizontal stabilizer leading edge, nacelle lips, and windshields.
Electrical heating for pitot tubes, static ports and stall warning devices, P2T2 sensors.
Alcohol for radome anti-icing and backup for windshield.

Air Conditioning and Pressurization
Freon for ground cooling, in-flight cooling and dehumidification. Optional electrical heating system and engine bleed air for pressurization.

Hydraulic Power Systems
Landing Gear, Gear Doors, Brakes, Flaps, and Spoilers. Single reservoir and two engine driven pumps through hydraulic shutoff valves. A Standby electric pump can pressurize all systems except the spoilers. It draws from the same reservoir and is not affected by the fire shutoff valves.

Landing Gear and Brakes
Tricycle retractable gear electrically controlled and hydraulically operated. Emergency air bottle in right side of nose compartment can extend gear and emergency braking. Self-centering nose gear with electrical nosewheel steering. Main gear with dual wheels and multi-disc bakes with antiskid.

Flight Controls
Manually actuated: cables, bellcranks, and pushrods. No hydraulic or electric power boosts. Trim tabs are electrically controlled. Secondary controls (spoilers and flaps) are electrically controlled and hydraulically actuated.

Pitot Static System (depending on Autopilot)
FC200 models use a conventional pitot-static system consisting of one heated pitot mounted on each side of the nose section and two heated static ports flush-mounted on each side of the nose compartment. The air data sensor uses the copilot’s line for pitot pressure
Oxygen system
Crew and passenger distribution connected to O2 bottle in he nose compartment. Passenger’s masks deployed automatically above 14000 feet cabin altitude or manually from the cockpit.

shnee
18th Aug 2005, 07:43
Cheer's mate,
that is great stuff. I just want a bit of a base understanding of the aircraft. Soon I hope I will get to fly it. I hope.

Check 6
21st Aug 2005, 15:22
Schnee, here is a study gouge (http://www.airplanedriver.net/study/lr30.htm) on the 35/36. There are frequently systems manuals and Flight Manuals on e-bay for sale.

Have fun,

Check 6

;)