Viper Aircraft ViperJet MkII User manual

MK II
PILOT’S OPERATING HANDBOOK

VIPER AIRCRAFT CORPORATION
VIPERJET MK II
PILOT’S OPERATING HANDBOOK
BUILDER/OWNER: _____________________________________
REGISTRATION NUMBER: _______________________________
SERIAL NUMBER: ______________________________________
VIPER AIRCRAFT CORPORATION
4020 N STEARMAN AVENUE
PASCO, WA 99301
PHONE [phone]
WWW.VIPER-AIRCRAFT.COM

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REVISION
DATE
Revision 1—Original Printing
June 1, 2008
Revision 2 (emergency gear ext.)
May 28, 2009

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TABLE OF CONTENTS
Table of Contents...................................................................................a
Section 1 –GENERAL........................................................................1-1
INTRODUCTION............................................................................... 1-1
DESCRIPTIVE DATA........................................................................ 1-1
Engine.................................................................................................1-1
Fuel.....................................................................................................1-1
Oil .......................................................................................................1-1
Maximum Certificated Weights...........................................................1-2
Standard Airplane Weights.................................................................1-2
SYMBOLS, ABBREVIATIONS AND TERMINOLOGY...................... 1-2
General Airspeed Terminology and Symbols.....................................1-2
Meteorological Terminology ...............................................................1-3
Engine Power Terminology ................................................................1-3
Weight and Balance Terminology ......................................................1-3
Section 2 –LIMITATIONS...................................................................2-1
INTRODUCTION............................................................................... 2-1
OPERATING LIMITATIONS.............................................................. 2-1
Airspeed Limitations...........................................................................2-1
Powerplant Limitations .......................................................................2-2
Weight Limits......................................................................................2-2
Center of Gravity Limits......................................................................2-2
ManeuverS .........................................................................................2-2
Flight Load Factor Limits....................................................................2-3

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Kinds of Operation Limits....................................................................2-3
Fuel Limitations...................................................................................2-3
Section 3 –EMERGENCY PROCEDURES........................................3-1
INTRODUCTION...............................................................................3-1
OPERATIONAL CHECKLISTS..........................................................3-1
GROUND EMERGENCIES ................................................................3-1
TAKEOFF EMERGENCIES................................................................3-2
IN FLIGHT EMERGENCIES...............................................................3-3
Section 4 –NORMAL PROCEDURES................................................4-1
INTRODUCTION...............................................................................4-1
SPEEDS FOR NORMAL OPERATION.............................................4-1
OPERATIONAL CHECKLISTS..........................................................4-3
Preflight Inspection..............................................................................4-3
Before Engine Start.............................................................................4-6
Engine Start ........................................................................................4-7
Before Takeoff.....................................................................................4-8
Take Off ..............................................................................................4-8
Climb / Cruise......................................................................................4-8
Recommended Maximum Speed Profile ............................................4-9
Landing ...............................................................................................4-9
Engine Shutdown................................................................................4-9
Section 5 –PERFORMANCE.............................................................5-1
INTRODUCTION...............................................................................5-1
General Specifications........................................................................5-1
Cruise..................................................................................................5-2

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Stall Speeds .......................................................................................5-3
Section 6 –WEIGHT AND BALANCE.................................................6-1
INTRODUCTION............................................................................... 6-1
AIRPLANE WEIGHING PROCEDURES........................................... 6-1
WEIGHT AND BALANCE.................................................................. 6-3

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ViperJet MK II Three View

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SECTION 1 –GENERAL
INTRODUCTION
Section 1 provides basic data and information of general interest. It also contains definitions of
explanations of symbols, abbreviations, and terminology commonly used.
DESCRIPTIVE DATA
ENGINE
Number of Engines: 1
Engine Manufacture: Viper Aircraft Corporation (Experimental)
Engine Model Number: VA J-85-17A
Engine Type: Turbojet
FUEL
Approved Fuel Grades: Jet A, JP-4
Fuel Capacity:
Center fuel tank: ______ gallons
(to be filled in by Builder/Owner)
Left Wing tank: _______ gallons
(to be filled in by Builder/Owner)
Right Wing tank: _______ gallons
(to be filled in by Builder/Owner)
OIL
Oil Grade (Specification): BP 2380 TURBINE OIL (or equivalent)

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MAXIMUM CERTIFICATED WEIGHTS
Takeoff: 5500 lbs.
Landing: 5500 lbs.
Weight in Baggage Compartment: 50 lbs.
STANDARD AIRPLANE WEIGHTS
Standard Empty Weight: _____________ lbs.
(To be filled in by Builder/Owner)
Maximum Useful Load: _____________ lbs.
(To be filled in by Builder/Owner)
SYMBOLS, ABBREVIATIONS AND TERMINOLOGY
GENERAL AIRSPEED TERMINOLOGY AND SYMBOLS
KCAS
Knots Calibrated Airspeed is indicated airspeed corrected for position
and instrument error and expressed in knots. Knots calibrated airspeed is
equal to KTAS in standard atmosphere at sea level.
KIAS
Knots Indicated Airspeed is the speed shown on the airspeed indicator
and expressed in knots.
KTAS
Knots True Airspeed is the airspeed expressed in knots relative to
undisturbed air which is KCAS corrected for altitude and temperature.
VA
Maneuvering Speed is the maximum speed at which you may use abrupt
control inputs.
VFE
Maximum Flap Extended Speed is the highest speed permissible with
wing flaps in a prescribed extended position.
VLE
Maximum Landing Gear Extended Speed is the highest speed
permissible with the landing gear extended.
VMO
Maximum Operating Speed is the speed that may not be exceeded in
any regime of flight (climb, cruise, descent).
VS
Stalling Speed or the minimum steady flight speed at which the aircraft
is controllable.
VSO
Stalling Speed or the minimum steady flight speed at which the aircraft
is controllable in the landing configuration at the most forward center of
gravity.

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VX
Best Angle-of-Climb Speed is the speed which results in the greatest gain
of altitude in a given horizontal distance.
VY
Best Rate-of-Climb Speed is the speed which results in the greatest
altitude gain in a given time.
METEOROLOGICAL TERMINOLOGY
OAT
Outside Air Temperature is the free air static temperature. It is
expressed in either degrees Celsius or degrees Fahrenheit.
Standard
Temperature
Standard Temperature is 15°C (59° F) at sea level pressure altitude and
decreases by 2°C for each 1000 feet of altitude.
Pressure
Altitude
Pressure Altitude is the altitude read from an altimeter when the
altimeter’s barometric scale has been set to 29.92 inches of mercury
(1013 mb).
ENGINE POWER TERMINOLOGY
EGT
Exhaust Gas Temperature is the temperature of exhaust gases exiting
the combustion chamber
N1
Revolutions per Minute (RPM) of the Turbine Fan expressed as a % of
maximum.
% Power
Percent of total thrust. NO COCKPIT INDICATION FOR THIS
WEIGHT AND BALANCE TERMINOLOGY
Reference
Datum
Reference Datum is an imaginary vertical plane from which all
horizontal distances are measured for balance purposes.
Station
Station is a location along the aircraft fuselage given in terms of the
distance from the reference datum.
Arm
Arm is the horizontal distance from the reference datum to the center
of gravity (CG) of an item.
Moment
Moment is the product of the weight of an item multiplied by its arm.
Center of
Gravity (CG)
Center of Gravity is the point at which an aircraft would balance if
suspended. Its distance from the reference datum is found by dividing
the total moment by the total weight of the aircraft.
CG Arm
Center of Gravity Arm is the arm obtained by adding the aircraft’s
individual moments and dividing the sum by the total weight.

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CG Limits
Center of Gravity Limits are the extreme center of gravity locations
within which the aircraft must be operated at a given weight.
Standard
Empty Weight
Standard Empty Weight is the weight of a standard aircraft, including
unusable fuel, full operating fluids and full engine oil.
Useful Load
Useful Load is the difference between maximum takeoff weight and
the standard empty weight.
Maximum
Takeoff
Weight
Maximum Takeoff Weight is the maximum weight approved for the
start of the takeoff run.
Maximum
Landing
Weight
Maximum Landing Weight is the maximum weight approved for the
landing touchdown.

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SECTION 2 –LIMITATIONS
INTRODUCTION
Section 2 includes operating limitations, instrument markings and basic placards
necessary for the safe operation of the aircraft, its engine, systems and equipment.
OPERATING LIMITATIONS
AIRSPEED LIMITATIONS
Airspeed limitations and their operational significance are shown in figure 2-1.
SPEED
KIAS
REMARKS
VMO
Maximum Operating Speed
SL –10,000 ft
10 –15,000 ft
15 –20,000 ft
20 –28,000 ft
375
360
340
325
Do not exceed this speed in
any regime of flight.
VA
Maneuvering Speed
250
Do not make full or abrupt
control movements above
this speed.
VFE
Maximum Flap Extended
Speed:
12° Flaps
20° Flaps
45° Flaps
175
165
150
Do not exceed this speed
with flaps down.
VLE
Maximum Landing Gear
Extended Speed
175
Do not exceed this speed
with the landing gear down.
Figure 2-1 Airspeed Limitations

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POWERPLANT LIMITATIONS
Engine Manufacturer: Viper Aircraft Corporation (Experimental)
Engine Model Number: VA J-85-17A
Engine Operating Limits for Takeoff and Continuous Operations:
Maximum Thrust: 2850 lbs.
Maximum N1: 101.2% (5 minute limit)
Maximum EGT (START): 780° C (10 second limit)
Maximum EGT (TAKEOFF): 704° C. (5 minute limit)
Normal Oil Temperature Operating Range: 60 –185° C
Normal Oil Pressure Operating Range: 20 –55 PSI
Ignition System (time limit 1): 2 minutes ON; 3 minutes OFF; 2 minutes ON; 23
minutes OFF
Ignition System (time limit 2): 5 minutes ON; 25 minutes OFF
WEIGHT LIMITS
Maximum Takeoff and Landing Weight: 5500 lbs.
Maximum Weight in Baggage Compartment: 50 lbs.
CENTER OF GRAVITY LIMITS
Center of Gravity Range:
Forward: Appx. 158.0 inches aft of datum (15% of Mean Aerodynamic Cord)
Aft: Appx. 162.50 inches aft of datum (25% of Mean Aerodynamic Cord)
Reference Datum: Nose of aircraft at base of pitot tube (if bayonet pitot installed).
MANEUVERS
This aircraft is designed for aerobatics; however, all maneuvers must first be performed in
the flight testing period and signed off in the aircraft logbook in accordance with the
Operating Limitations that accompany the Airworthiness Certificate. The following are
suggested entry speeds and do not constitute an endorsement for any aerobatic
maneuvers which are performed. All maneuvers are subject to the Flight Load Factor
Limits contained herein.

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MANEUVER
RECOMMENDED MINIMUM ENTRY SPEED (95% POWER)
Barrel Roll
...........................................................................................200 KIAS
Aileron Roll
...........................................................................................200 KIAS
½ Cuban Eight
...........................................................................................250 KIAS
Loop
...........................................................................................250 KIAS
FLIGHT LOAD FACTOR LIMITS
Flight Load Factors (Maximum Takeoff Weight –5500 lbs):
*Flaps Up ........................................................................................... +6.0g, -3.0g
*Flaps Down ..................................................................................... +3.0g, +0.5g
*The design load factors are 150% of the above and in all cases the structure meets or
exceeds design loads.
KINDS OF OPERATION LIMITS
The aircraft is equipped for day VFR and may be equipped for night VFR and/or IFR
operations. FAR Part 91 establishes the minimum required instrumentation and
equipment for these operations.
FUEL LIMITATIONS
Center Fuel Tank: __________ Gallons total.
(to be filled in by Builder/Owner)
Left Wing Fuel Tank: __________Gallons total
(to be filled in by Builder/Owner)
Right Wing Fuel Tank:__________Gallons total
(to be filled in by Builder/Owner)
Approved Fuel Grades: Jet A, JP4

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SECTION 3 –EMERGENCY PROCEDURES
INTRODUCTION
Section 3 provides checklist and amplified procedures for coping with emergencies that
may occur. Emergencies caused by aircraft or engine malfunctions are extremely rare if
proper preflight inspections and maintenance are practiced. Enroute weather
emergencies can be minimized or eliminated by careful flight planning and good judgment
when unexpected weather is encountered. However, should an emergency arise, the
basic guidelines described in this section should be considered and applied as necessary
to correct the problem(s).
OPERATIONAL CHECKLISTS
GROUND EMERGENCIES
FALSE START/HUNG START
1. THROTTLE........................................................................................................OFF
2. IGNITION SWITCH ...........................................................................................OFF
3. START SWITCH ................................................................................................OFF
4. FUEL DRAIN PERIOD..........................................................................30 SECONDS
...................................................................................... (IF STARTER WAS ON LESS THAN 30 SEC)
5. START SWITCH ............................................................................................START
6. PURGE PERIOD ..................................................................................15 SECONDS
7. START SWITCH ................................................................................................OFF
AFTER 3 MINUTES
8. START PROCEDURE ...................................................................................REPEAT

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ENGINE FIRE ON START
1. THROTTLE........................................................................................................OFF
2. IGNITION SWITCH ...........................................................................................OFF
3. START SWITCH .................................................................... ON (WINDMILL ENGINE)
4. BOOST PUMP ..................................................................................................OFF
5. EMERGENCY FUEL ..............................................................CUTOFF (RAISE GUARD)
IF FIRE PERSISTS
6. THROTTLE........................................................................................................OFF
7. START SWITCH ................................................................................................OFF
8. BATTERY MASTER............................................................................................OFF
9. EXIT AIRCRAFT
FIRE ON THE GROUND AFTER START
1. THROTTLE........................................................................................................OFF
2. BOOST PUMP ..................................................................................................OFF
3. EMERGENCY FUEL...............................................................CUTOFF (RAISE GUARD)
4. EXIT AIRCRAFT
TAKEOFF EMERGENCIES
ENGINE FAILURE DURING TAKEOFF RUN
1. DRAG BRAKES..............................................................................................APPLY
2. THROTTLE........................................................................................................OFF
3. BRAKES ................................................................................................MAXIMUM
(IF LESS THAN 3000 FT REMAINING)

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ENGINE FAILURE IMMEDIATELY AFTER TAKEOFF
1. AIRSPEED............................................................ MAINTAIN 100 KIAS MINIMUM
2. LANDING AREA...... CHOOSE BEST OPTION WITH MINIMUM HEADING CHANGE
3. LANDING GEAR ..................UP IF LANDING WILL BE ON UNPREPARED SURFACE
4. THROTTLE........................................................................................................OFF
5. EMERGENCY FUEL...............................................................CUTOFF (RAISE GUARD)
6. FLAPS.............................................................................AS NECESSARY TO FLARE
IN FLIGHT EMERGENCIES
ENGINE FIRE IN FLIGHT
1. THROTTLE........................................................................................................OFF
2. AIRSPEED............................................................ MAINTAIN 100 KIAS MINIMUM
3. BOOST PUMP ..................................................................................................OFF
4. L & R TRANSFER PUMP ...................................................................................OFF
5. EMERGENCY FUEL...............................................................CUTOFF (RAISE GUARD)
IF FIRE PERSISTS
6. BATTERY MASTER............................................................................................OFF
7. GENERATOR ....................................................................................................OFF
IF FIRE PERSISTS
8. BAILOUT
IF FIRE EXTINGUISHES OR BAILOUT NOT POSSIBLE
9. AIRSPEED............................................................ MAINTAIN 100 KIAS MINIMUM
10. LANDING AREA..................................................................CHOOSE BEST OPTION
11. LANDING GEAR ..................UP IF LANDING WILL BE ON UNPREPARED SURFACE
12. FLAPS.............................................................................AS NECESSARY TO FLARE
ELECTRICAL FIRE IN FLIGHT
1. ELECTRICAL EQUIPMENT ..................................UNNECESSARY EQUIPMENT OFF
IF FIRE PERSISTS
2. GENERATOR ....................................................................................................OFF
3. BATTERY MASTER............................................................................................OFF
IF FIRE PERSISTS
4. THROTTLE........................................................................................................OFF
5. AIRSPEED............................................................ MAINTAIN 100 KIAS MINIMUM