Pro 4 Unit 1

How many passangers does the CRJ-700 hold?

68-76 (most configured at 70, CRJ-900 at 76)

1.) How many Flight attendant seats does the CRJ 700 have?

1a) List both and what they BOTH have at each station

1.) 2

1a) 1 jumpseat rear-facing behind the cockpit door and 1 jumpseat forward-facing at the rear of the cabin. They BOTH have a handset at each station.

1.) How many doors are on the CRJ-700 and where are they?

2.) How many exits are on the CRJ-700?

1.) Two doors: main cabin door (1L) and Catering/service door (1R)

2.) Two overwing exits

The CRJ-700 is ___(1)____ category and is approved for ___(2)____, and the minimum flight crew is ____(3)___

1.) Transport

2.) Day & night, VFR & IFR, known icing, RVSM (from FL290 to FL410)

3.) One pilot and one copilot; 2 flight attendants (one per 50 passanger SEATS)

1.) What approach category is the CRJ-700?

2.) ILS category II DH is no less than _____ ft and RVR is ______’ to ______’

1.) C

2.) 100, 1800, 1200

CRJ max weights for

a) maximum ramp weight

b) maximum takeoff weight

c) maximum landing weight

d) maximum zero fuel weig

a) 75,250 lbs

b) 75,000 lbs

c) 67,000 lbs

d) 62,300 lbs

Max operating speeds for…

a) RVSM

b) VMO (Max operating speed)

c) MMO (Max Mach Operating

a) Mach 0.83

b) 335 KIAS to FL 250, 315 KIAS above FL250 to FL 410

c) 0.80 MACH to FL250, 0.85 Mach above FL250 to FL 410

Maximum Wind Components…

a) Crosswind: Dry runway

b) Crosswind: Wet runway

c) Contaminated

d) Tailwind

a) 30 knots

b) 27 knots

c) 20 knots

d) 10 knots

How many takeoff weights do we actually have (besides normal T/O weight) and which one do we use?

Runway limit: max weight an aircraft can safely land based on runway length and conditions

Landing limit: maximum weight for achieving required climb performance after landing.

Climb Limit: maximum weight that allows the aircraft to meet the necessary climb gradient during a go-around.

WE USE THE LOWEST OF THE 4

Speed limits…

a) Flaps 1, 8, and 20

b) • Flaps 30

c) • Flaps 45

d) • Landing Gear Extension

e) • Landing Gear Retraction

f) • Landing Gear Down & Locked

g) • Turbulent Air

230 KIAS

185 KIAS

170 KIAS

220 KIAS

200 KIAS

220 KIAS

no faster than 280 KIAS / 0.75 Mach

What are the sources of electrical power for the CRJ-700?

-Integrated Drive Generator (engine turning a generator)

-Auxiliary Power Unit

- Air-Driven Generator (emergency power source)

-Batteries

-External Power

What are our sources of electrical energy?

Chemical

Light

Magnetism

Pressure

Friction

Thermal

1) What is the principle of magnetic conduction?

2) The amount of electricity that is generated based on this principle depends on…

1) If a conductor passes through lines of flux, they force electrons to flow through it

2) Number of conductors

-rate at which lines of flux are cut

-strength of the magnetic field

AC vs DC power

AC: 115V, 3 phases, 400 hz

-Ground power, APU generator, Integrated drive generators (1 each engine), air-driven generator (emergency power).

DC: 28V —from—> Transformer rectifier units (4 in CRJ), nickel-cadmium (we have main and APU battery)

TAD & IDA

TRU takes AC power and converts it into DC

Inverters need DC power to turn it into AC

1)What provides all power during normal ops?

1a) How many volts and hertz

2) What provides all power during ground operations?

3) What else can provide efficient power during normal ops?

1) Gen 1 and Gen 2

1a) 115 volts 400hz 40 kVA

2) APU (can replace lost IDG)

3) Ground power

What provides emergency power if no other source is available?

ADG auto deploys during complete loss of AC power

What do Transformer Rectifier Units (TRU) do?

Transforms: Adjusts voltage from 115 to 28V

Rectifies: changes current from AC to DC

___(a)___ provide DC power when no AC power is available.

___(b)___ provide DC power when a source of AC power is available

a) Two Nickel Cadium Batteries

b) Transformer rectifier unit

what are the conditions for auto deploy of ADG

Loss of all AC power to AC Bus 1 and 2in the air (115V, 400Hz, 15am[)

List all AC Busses

AC BUS 1

AC BUS 2

ADG BUS (emergency power)

AC ESSENTIAL bus

AC SERVICE bus (service)

List all DC busses

DC Bus 1

DC Bus 2

DC Essential Bus

DC Service Bus

DC Utility Bus

DC Battery Bus

DC Emergency Bus

Main/APU Battery Direct Bus

which System automatically isolates and shuts-down a failed bus

AC Auto Transfer Inhibit

1) What is the Integrated Drive Generator made of?

2) Cooled by _______ using ______

3) If we have High oil temp or low oil pressure

1) AC Generator makes electricity and Constant Speed Drive transmission

2) air/oil heat exchanger, N11 fan air

3) Generators about to lock up and be lost, Mechanical disconnect and fire up APU

What does AC Power Center do?

COntinous monitor genrator for

-Over/ under voltage and frequency

-Generator or bus over current

-generator phase

AC BUS 1 and 2 perfer power in this priority…

• On-side (Gen ½)

• Inside (APU)

• Off-side (Gen ½)

• Outside (External power)

AC Essential Bus

• Likes _______ the best

• Sidepiece is ______

• Last resort is ______

AC Bus 1

AC Bus 2

Air Driven Generator BusAir-Driven

How are DC buses powered?

2 DC power centers distribute power to 9 DC busses & DC ties allow flow in abnormal ops

In flight all generators fail, what happens?

1.) Air driven generator deploys—> Essential Transformer Rectifier Unit powers DC essential bus and DC battery bus