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So what is the correct startup and shutdown procedure with engine hot starts a

Cowboy10uk

By Cowboy10uk
in DCS: UH-1H

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Cowboy10uk

Cowboy10uk

Posted
Posted

Hi guys, now we have had the stunning news that we are getting full engine management including hot starts, I was wondering if anyone knows the correct procedure we will have to use to stop the engine eating itself.

 

At mo I can start and shut her down fine, although I will admit I don't take any notice to temps and tend to just ramp upto full throttle as soon as the engine is running.

 

Now I'm pretty sure doing this in the real aircraft will result in a large telling off and a new engine. :)

 

I'm sure many guys here already start her correctly, but hey I'm I patent and lazy. ;)

 

Can someone please point me towards correct temps and when I should be ramping up, likewise shut down.

 

I sure I should be letting the engine cool down before switching everything off but as to how long I should be doing this for I have no idea. :)

 

Yes I'm a crap pilot, but damn I'm looking forward to these extras. Gonna be amazing.

 

Cowboy10uk

 

 

[sIGPIC][/sIGPIC]

 

Fighter pilots make movies, Attack pilots make history, Helicopter pilots make heros.

 

:pilotfly: Corsair 570x Crystal Case, Intel 8700K O/clocked to 4.8ghz, 32GB Vengeance RGB Pro DDR4 3200 MHZ Ram, 2 x 1TB M2 drives, 2 x 4TB Hard Drives, Nvidia EVGA GTX 1080ti FTW, Maximus x Hero MB, H150i Cooler, 6 x Corsair LL120 RGB Fans And a bloody awful Pilot :doh:

-MadCat-

-MadCat-

Posted
Posted (edited)

Hi Cowboy!

 

Excerpt from UH-1H/V Operator's Manual ( 02.15.1988 ) :

 

8-22. Starting Engine

[...]

4.
Throttle - Set for start. Position throttle as near as possible (on decrese side) to engine idle stop.

5.
Engine - Start as follows:

a.
Start switch - Press and hold; start time.

Note DC voltmeter indication. Battery starts can be made when voltages less than 24 volts are indicated,

provided the voltage is not below 14 volts when cranking through 10% N1 speed.

b.
Main rotor - Check that main rotor is turning as N1 reaches 15%.

If rotor is not turning, abort start.

c. START FUEL switch - OFF at 40% N1.

d.
Start switch - Release at 40% N1 or after 40 seconds, whichever occurs first.

Refer to chapter 5 for starter limitations.
Maximum starter energize time is 40 seconds

with three-minute cooling time between start attempts

with three attempts in any one hour.

Exhaust Temperature:

[...]

625 to 675°C 10 Second Limit for Starting and Acceleration

675°C to 760°C 5 Second Limit for Starting and Acceleration

[...]

e.
Throttle - Slowly advance past engine idle stop to engine idle position.

Manually check engine idle stop by attempting to close throttle.

f.
N1 - 68-73%. [...]

NOTE

The copilot attitude indicator should be caged and held momentarily as inverter power is applied.

6.
INVTR switch - MAIN ON.

7.
Engine transmission oil pressures - Check.
Engine Oil Pressure:

25 PSI Minimum - Engine Idle

80 to 100 PSI Continuous

100 PSI Maximum

Transmission Oil Pressure:

30 PSI Minimum

40 to 60 PSI Continuous

70 PSI Maximum

8.
GPU - Dicsonnect.

 

8-23. Engine Runup

[...]

2.
STARTER GEN switch - STBY GEN.

3.
Systems - Check as follows:
a.
FUEL

b.
Engine
Engine Oil Temperature:

93°C Maximum Below 30°C FAT

100°C Maximum At 30°C FAT and Above

c.
Transmission
Transmission Oil Temperature:

110°C Maximum

d.
Electrical

(1)
AC - 112 to 118 volts.

(2)
DC - 27 volts at 26°C and above. 28 volts from 0°C to 26°C. 28,5 volts below 0°C.

4.
RPM - 6600. As throttle is increased, low rpm audio warning light should be off at 6100 - 6300 rpm.

5.
Fuel control - Check as required (for helicopters without modified fuel control) before first flight of the day as follows:
a.
GOV RPM INCR/DECR switch - DECR to 6000 rpm.

b.
Collective pitch - increase slowly until helicopter is light on the skids. Do not exceed 94% N1 or torque limit.

c.
RPM - Check for the following:

(1)
If rpm remains at 6000 (no bleed-off) or if bleed-off occurs but returns to 6000 within 4 seconds,

fuel control is acceptable.

(2)
If rpm bleed-off occurs but does not return to 6000, fuel control is not acceptable and helicopter shall not be flown.

[...]

d.
Collective pitch - Decrease to full down.

e.
GOV RPM INCR/DECR switch - increase to 6600 rpm.

[...]

 

8-40. Engine Shutdown

 

CAUTION

If throttle is inadvertently rolled to OFF position, do not attempt to roll back on.

1. Throttle - Engine idle for two minutes.

2. FORCE TRIM switch - ON.

[...]

9. STARTER GEN switch - START

10. Throttle - OFF

[...]

 

 

Hope this helps!

 

Greetings

MadCat

Edited by -=MadCat=-
  • Like 1

Link -> Stateful button commands for many DCS modules

Cowboy10uk

Cowboy10uk

Posted
  • Author
Posted

Perfect mate,

 

Many thanks

 

Cowboy10uk

 

 

[sIGPIC][/sIGPIC]

 

Fighter pilots make movies, Attack pilots make history, Helicopter pilots make heros.

 

:pilotfly: Corsair 570x Crystal Case, Intel 8700K O/clocked to 4.8ghz, 32GB Vengeance RGB Pro DDR4 3200 MHZ Ram, 2 x 1TB M2 drives, 2 x 4TB Hard Drives, Nvidia EVGA GTX 1080ti FTW, Maximus x Hero MB, H150i Cooler, 6 x Corsair LL120 RGB Fans And a bloody awful Pilot :doh:

DSPALLASVI

DSPALLASVI

Posted
Posted

Nice, thanks.

Made a little WORD document for an easy checklist...

Huey Engine Start.doc

ASUS Sabertooth X79 TUF Motherboard / Intel Core i7-3930K Unlocked Processor Six Core / Corsair CMP32GX3M4X1600C10 Dominator Memory Kit - 32GB (4x 8GB) / OCZ Solid 3 480GB Solid State Drive / EVGA GeForce GTX 670 FTW+ / Corsair CW-9060002-WW Hydro H70 CORE CPU Cooler / Seagate ST1000DM003 1TB Hard Drive / BenQ XL2420TX 24" Widescreen LED Gaming Monitor - 1920 x 1080 / Windows 7 Ultimate Edition, 64-bit / C-Tek 12-bit: Foot Pedals - Robinson Cyclic - 5-button-hat cyclic - Collective / TrackIR-5

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