DCS 怒火危崖: F-15C

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从1970年到21世纪初,F-15被认为是美国最伟大的战斗机。F-15C是一架纯粹的战斗机。它拥有杰出的表现,取得超过100次的空战胜利,且未遭受任何确认的损失。DCS怒火危崖: F-15C包括专业水平的飞行模型、精细的6自由度的驾驶舱、高度精确的机体模型和音效。

作为怒火危崖系列,DCS怒火危崖: F-15C侧重于易操作性,而无需复杂的驾驶舱互动。这样可以显著降低学习难度。因此,DCS怒火危崖: F-15C提供基于键盘和操纵杆的专注于任务的驾驶舱系统的相关指令。

发行: 2017-08-31

Powerplant

Afterburner operation is simulated in detail, with complex afterburner spray ring calculations.

Startup procedure is fully modeled.

Pressing the Engine Start key initiates the automatic startup procedure, faithfully modeled in detail.

The model follows real-world steps needed to start the engine in a real F-15; however the current implementation can only be performed automatically without additional manual input by player.

The JFS (Jet Fuel Starter) pull-out handle starts the JFS. Upon JFS reaching sufficient speed, the READY lamp lights up on the right console. The engine start procedure begins a few seconds later based on selected input (left or right).

Two possibilities can arise after the first engine is started:

  • If the command input is to start one engine, the JFS will turn off automatically;
  • If the command input is to start two engines, JFS will work at idle for some time, then begin to spin the second engine.

The right engine is always started first when starting both engines. This way the hydraulic pump operated by the right engine can be checked.

Powerplant

JFS LOW display illuminates after the JFS is started, showing that one or both hydraulic accumulator are discharged. After starting the engine, the hydraulic pressure in the accumulator rises and the display will turn off.

Other indicator lights may illuminate during start-up, including L GEN OUT, R GEN OUT, or EMER BST ON. This is not a malfunction. However, if the lights remain on after the start-up procedure is completed, a malfunction may indeed have occurred.

Fuel System

The F-15C carries internal fuel in four fuselage and two wing tanks with total capacity of 2,070 gallons (7,836 liters).

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The fighter can also carry up to three external fuel tanks, two under wing and one under fuselage, with a total capacity of 610 gallons (2,309 liters).

Fuel System

Maximum overall capacity for all internal and external tanks is 3,800 gallons (14,385 liters). The interconnected fuselage tanks are located behind the cockpit and under the speed brake, between the two engine air intake ducts.

All internal, external and CFT fuel can be dumped via the Fuel Dumping System through fuel vent outlets located at the trailing edge of each wingtip.

Aerial refueling can be accomplished via the Air Force type fixed boom system with an air refueling receptacle.

Tank Capacity (gal) Fuel Weight (lbs) Fuel Weight (kg)
Tank 1 655 4257 1931
Right Feed 234 1521 690
Left Feed 189 1228 557
Left/Right Wing Internal 496 3224.5 1462.5
496 3224.5 1462.5
TOTAL INTERNAL 2070 13455 6103
Left/Right Wing External Drop 610 4072 1847
610 4072 1847
TOTAL INTERNAL + EXTERNAL WING DROP 3290 21599 9797
Fuselage Drop 610 4072 1847
TOTAL INTERNAL + EXTERNAL FUSELAGE DROP 2680 17527 7950
TOTAL INTERNAL + EXTERNAL DROP 3800 25671 11644
Maximum possible fuel capacity 3800 25671 11644

Fuel transfer system is fully automatic. Fuel from external fuel tanks are transferred to the internal tanks by regulated engine bleed air pressure.

However, the 1 tank pump will not operate on the F-15C with the aerial refueling receptacle door open (SLIPWAY switch is not in the CLOSE position).

Fuel from external tanks will not feed if the landing gear handle is lowered, or if SLIPWAY switch is in the OPEN position, but only as long as the FUEL LOW light is not illuminated.

Normally, the left engine is powered by the Left engine feed tank, and the right engine by the Right engine feed tank. When flying on one engine, the engine feed tank of the disabled engine will not feed the running engine until the operative engine's feed tank fuel supply dips well below the FUEL LOW limits.

External Fuel Transfer Switch

The WING (for external wing tanks) and CTR (for centerline tank) switches are set to NORM for normal transfer and refuel functions when external tanks are used. The switches have no effect when external tanks are not used.

As conformal tanks are not covered in this model, the CONF TANK switch is set to STOP TRANS to maintain logical fuel flow.

The EXT TRANS switch is set to WING / CTR.

Fuel Quantity Indicating System

Combined indicator that displays different fuel quantities is located at the bottom right of the Main Instrument Panel.

Fuel Quantity Indicating System

The pointer shows the total internal fuel in thousands of lbs (readings must be multiplied by 1,000). The counter marked as "TOTAL LBS" indicates total internal, external, plus CFT fuel.

The two lower counters marked LEFT and RIGHT provide individual tank monitoring possibility. The tank to be monitored must be selected by a selector knob and the current fuel levels of the selected tank are indicated by the two counters.

The Selector knob is set to the "FEED" positions to display fuel state for engine feed tanks.

The LEFT and RIGHT lower counters therefore display total fuel in the left and right engine feed tanks.

FUEL LOW Caution

The FUEL LOW caution automatically displays, and the appropriate caution light illuminates, if fuel level in one of the engine feed tanks decrease below a minimal limit.

Individual fuel level sensors in the engine feed tanks are set to 1,000 pounds for the right engine feed tank, and 600 pounds for the left.

BINGO FUEL Caution

In a real F-15, the pilot can manually set bingo fuel level by a knob in the upper right corner of the Fuel Quantity Indicator display. Once this level is reached by the fuel quantity pointer, a BINGO FUEL caution on the MPD/ MPCD display comes on.

In the case of this simulation, BINGO fuel level is set to 3,500 lbs.

Fuel Dumping System

All internal, external and CFT fuel, except for fuel in engine feed tanks, can be dumped overboard.

With the landing gear handle lowered, fuel in external tanks is not dumped.

The dump switch is spring-loaded to the lever-locked NORM position. If the switch is placed into its DUMP position, it is held there electrically.

The fuel is dumped at an approximate rate of 390 PPM (pounds per minute) for the right wing tank and 260 PPM for the left wing tank and tank 1.

Fuel Dumping System

Note:

Unequal dumping rate for the left and right wing tanks creates an imbalance of approximately 130 pounds per minute. This imbalance continues to grow until all fuel is dumped from both wing tanks.

Fuel from the external wing tanks is pumped into internal tanks and then dumped.

Fuel dumping continues:
  1. While the switch remains in the DUMP position.
  2. Until the BINGO caution comes up, in which case the fuel dump switch returns to its NORM position automatically.
  3. Until there's no fuel left in the feed tanks. This is possible if the BINGO fuel level is set to less than 2,700 pounds.
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