Stage 1 Overview

Limits, Specs, and Gen. Knowledge.

Main rotor diameter

33'

Tail rotor diameter

5'

Overall Length

38' 3"

Height

11' 5"

Usable fuel, total fuel

73.6 gal, 74.6 gal

Max gross weight (MGOW)

2700 lb

Min gross weight

1400 lb

Electrical system voltage and battery type

28 volts, lithium-ion

What is the fuel system design?

Single bladder, gravity fed

Engine model and mount angle

Rolls-Royce 250-C300/A1 at 37*

Drive train design

Sprag-type overrunning clutch mated directly to the splined engine power takeoff shaft

Main rotor design

Semi-rigid, underslung

Free to teeter and cone

2 blades

33' diameter

Tail rotor design

Free to teeter, rigid in plane

2 blades

60" diam

No twist

Hover controllability on Performance Charts was substantiated with these conditions

up to 17 kt winds

up to 11,000' DA

Engine type

Free turbine turbo shaft

Manufactured shaft horse power rating

300 SHP

5 min SHP takeoff rating

270 SHP

Continuous SHP rating

224 SHP

Approved fuel

Jet A, Jet A1

Oil quantities: Min and Max

min oil: 4 qt

Max oil: 6 qt

Low fuel light

5 gal of fuel, ~10 min flight time

When is the <12 gal annunciation inaccurate & by how much?

at cg limits; ±4 gal

• Aft/left loads = a late annunciation (<12 gal left)

• forward/right loads = an early annunciation (>12 gal left)

The rotor turns this direction

counterclockwise

Rotor normal operating range (green arc)

88-106%

Main rotor low RPM horn and warning light activate @...

95% RPM

Tail rotor turns this direction

clockwise (from portside)

Main rotor min RPM power off

88%

main rotor power on RPM range

99-101%

main rotor max RPM power off

106%

What kind of battery is installed?

24 volt lithium ion battery

When does the GCU disengage the starter?

N1 @ 58%

The main bus powers

non-critical equipment (lighting, accessories)

The essential bus powers

governor, fuel pumps, engine instruments

Normal voltage range (gen on)

27.3-28.7 V

Starter cycle

40 sec on, 60 sec off (x2), third attempt 40 sec on, wait 30 min

What drives the hydraulic pump

the main gearbox

climb speed

60 KIAS

Vne above 2200lb

130 KIAS

Autorotation Glide (up to 9000') VNE

100 KIAS (max)

Vne below 2200 lb

140 KIAS

Max airspeed at 83% torque

65 KIAS

Max airspeed with doors removed

100 KIAS

N1 max

105%

MGT 5 min limit

782*C

MGT continuous limit

706*C

MGT transient limit

843*C for 6 sec

MGT start limit

927*C

Torque max continuous

83%

Torque 5 minute limit

83-100%

When does N1 stabilize and the engine is considered self sustaining?

65-67%

What N1 setting will the rotor begin to turn at?

25%

What is true altitude

Actual height above mean sea level (MSL)

What is pressure altitude?

the height above a Standard Datum Plane (SDP), which is a theoretical level where the air pressure equals 29.92 inches of mercury (Hg)

what altimeter reads if 29.92 put in Kollman Window

What is density altitude?

The pressure altitude corrected for nonstandard temperature.

Maximum operating density altitude

14,000'

Max operating altitude AGL

9000'

When is closing throttle prohibited?

Above 10,000' DA

When cabin heat on

Up to what altitude is a 100 KIAS auto permitted?

9000' DA

How long can you stay in N2 yellow transient arc before reaching an exceedance?

75-88% for 60 sec (power on only)

What N1 setting does fuel get added during start?

15%

TOP

Takeoff power

Max seat weight

300 lb

Max in seat compartment

50 lb

What flight profile is prohibited ?

Aerobatic flight

What is a low-g pushover recovery?

Slight aft cyclic to reload rotor system BEFORE arresting the roll

Buckle this

Forward left seat

T/F TCAS is sufficient for traffic avoidance

False

VFR night FAA requirements

CLAPS (FAR 91.205)

• circuit breakers

• landing light

• anti-collision lights

• position lights

• source of electrical energy

Must maintain this at night

Visual reference with the ground

Max ambient temp

ISA+35*C limited to 50*c

ISA+63*F limited to 122*F

Min Ambient Temperature for Operation

-40*C (-40*F)

Flight into these conditions is prohibited

Known icing

Anti-ice shall be turned on in

@ or Below 4*C and visible moisture

Takeoff/climb speed

60 KIAS

What light switch remains on?

aft strobe switch

Ideal torque range during engine start

30-40%

Torque should not exceed _______ % hover torque

10%

Auto entry procedure

Close throttle THEN down collective

Desired airspeed and rate of descent

60 KIAS <500 fpm

If below 30kts, what is max rate of descent?

300 fpm

Why perform N1 deceleration check?

ensure the fuel control unit properly reduces engine speed during power reduction.

What is the ATIS freq.

120.7

What is Meacham field elevation?

710'

What is Copeland's field elevation?

693'

Hover Checks

Panel clean,

RPM's married at 100%,

make note of hover torque %,

gauges green,

fuel adequate,

cg within limits

Before landing checks

• panel — clean

• Gauges — green

• Fuel — note approx. amount (half tank, 1/3, etc)

• Throttle — verify full open

Shutdown checks

Fuel, bypass indicators, TRGB, fluid levels

Landing Pattern Numbers

DW: 1300 MSL, 70 KIAS

Base: 1000’ MSL, 60 KIAS

Final: 1000’ MSL, 50 KIAS

Primary source of electrical power in flight

Generator

Perform this landing if hydraulic failure and why

Run on, touching down above ETL reduces required control inputs

Point of max lift and minimal drag

L/D Max; 55-65 kts

Hazard of exceeding aft CG

not able to attain higher airspeeds due to max forward cyclic; tail strike

Airfoil diagram (for rotor)

label

How does power turbine governor communicate with FCU?

Air pressure through tubing

What is low-g mast bumping?

abrupt fwd cyclic that induces a roll to the right, followed by opposite pilot input

SAS

stability augmentation system

Hazard of exceeding fwd CG limits

Unable to slow down or flare

Role of flare in auto

1. Arrest descent

2. Slow down

3. Trade airspeed for RPMs

4. Build rotor RPM

What is the name of the force that causes helo to drift in the direction of TR thrust?

Translating tendency

Why does the generator load shown on the ammeter start high and gradually decrease after turning the generator on?

Charging the battery after the battery was used to start the engine