Operating Expense helicopters
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Operating Expense helicopters

Operating Expense helicopters

Operating Expense helicopters are characterized by flight hour cost, the calculation is made in accordance with the requirements of the ATA-60 for each case. This technique is used in many world airlines. Determined by the direct operating expenses (PER) for what you need to know: the price of the helicopter as a whole, its main components and engines; the cost of overhaul of the helicopter; information resource helicopter airframe, engine and main units.

Then, should identify:

  • a) flight expenses, which include salaries of the crew, the cost of fuel oil .i;
  • b) land costs or maintenance costs (labor, materials, spare parts);
  • c) expenses for overhaul of the airframe, engines, main units of the helicopter;
  • d) depreciation expenses of the airframe, engines, units (residual value — 16% of the product price);
  • e) insurance costs at the rate of insurance rate 6% of the helicopter price per year, taking into account the average annual flight time;
  • f) rent a hangar.

After determining all the costs and summing them are direct operating costs for a given helicopter raid, t. E. Flight hour cost (the cost-to-fly).

For the calculation of commercial cargo, which is capable of a helicopter transported on this route, you need to make an analysis of the shuttle.

For this purpose it is generally necessary to know:

1. Basic raw data:

  • a) speed: cruising when the flight mass is less and more than normal; when climbing and descending; (vertical when climbing and descending;
  • b) weight: empty helicopter, crew, oil, equipped helicopter (without fuel);
  • c) flight altitude and take-off and landing sites above sea level;
  • d) temperature conditions in the area of ​​the route.

2. The time, fuel consumption and the distance traveled by the helicopter during the initial and final phases of the flight — when starting and testing engines, taking off and accelerating, climbing and descending, braking and landing.

3. Flight mass and fuel consumption at the beginning and end of horizontal flight, average fuel consumption in horizontal flight, fuel consumption, distance and time of horizontal flight in the flight segment with flight weight more and less than normal, total time and total distance of horizontal flight (actual and taking into account 3% correction for navigation error).

4. General flight indicators: range, flight time, average hourly fuel consumption, daily (annual) flight time.

Based on the analysis of the trip are determined by the required amount of fuel for the flight on a given route and the amount of payload (number of passengers, cargo, mail), which is able to carry a helicopter. The latter is determined using nomograms showing the dependence of gross weight of the helicopter on the outdoor temperature and the height of the landing site altitude during takeoff from the influence and without the influence of "air cushion".

Knowing the direct operating costs, overhead costs and the amount of payload, we can determine the cost of the ticket for passengers. For example, we approximate calculation (with certain assumptions) direct operating expenses shuttle analysis and determine the amount of payload and the cost of tickets for the route Cusco-match pitch in the Republic of Peru to the use of this route passenger helicopter middle class.

Calculation of direct operating costs (PER)

Initial data:

1. Assigned resources: helicopter— 10 000 h; transmission units and carrier systems and engines - 2000 h; main rotor blades - 1500 h; tail rotor blades - 1000 h.

2. The overhaul resources of the helicopter and its units are 1000 h.

3. Cost of major repairs: airframe — 15% of initial cost; Units - 20% of original cost.

4. Residual value is 15%.

5. The cost of spare parts and consumables for maintenance - 20 dollars / l. h. (calculation hereinafter is carried out in US dollars).

6. The cost of fuel and oil is $ 31,7 / l. h

7. The salary of the technical staff - 1000 dollars per month.

8. Flight crew salaries are $ 1500 per month.

9. Hangar rental - 110 dollars per month.

10. The attack helicopter in the day - 4 20 hours min (1400 hours per year).

11. Prices helicopter engines units: Helicopter - 900 000 dollars .; Engine 86 400; the main gearbox - 63 600; transmissions - 5 157; swash, bearing sleeves and the tail rotor - 36 450; rotor blades - 24 390; tail rotor blades - 6 840 dollars.

12. Insurance rate is taken from the calculation: 20% the price of the helicopter - a one-time fee and US $ 12 500. - Monthly fee. In terms of flight hour rate is 125 insurance dollars. Flying hour.

A regular analysis

1. Baseline data for analysis:

  • a) the height of take-off and landing sites above sea level: Zhusko Airport - 3312 m; Matchu-Pitchu playground - 2060 m;
  • b) the distance along the route — 100 km in one direction;
  • c) temperature conditions at the landing sites: Cusco Airport: maximum 22 ° С; average 13 ° C; 1minimum 7 ° C; Matchu-Pitchu playground - respectively 23 ° С, 20 ° С, 15 ° С;
  • d) flight altitude - 3800 m;
  • e) cruising speed on the route — 180 km / h;
  • e) flight time (common return) - 1,44 h;
  • g) the mass of the empty helicopter - 7196 kg;
  • h) crew (2 people) - 160 kg;
  • i) oil mass in systems - 70 kg;
  • a) curb weight of the helicopter (without fuel) -7426 kg.

2. Determination of the amount of fuel during take-off (refueling at both points "precipitation"):

  • a) fuel consumption in flight from Cuoco to Match-Pitch is 324 kg, of which: take-off, acceleration, braking and landing - 30 kg; to climb from 3312 to 3800 m - kg 34; on reduction from 3800 to 2060 m - kg 34; for horizontal flight, taking into account the 3% range correction (with a specific consumption of 2,8 kg / km) —226 kg;

  • b) the fuel consumption in flight from Matchu-Pitchu to Cuzco is 331 kg, of which: take-off, acceleration, braking and landing - 30 kg; to climb from 2060 to 3800 m — 65 kg; on decrease from 3800 to 3312 m - 10 kg; for horizontal flight, taking into account the 3% range correction — 226 kg;

  • c) aeronautical supply of fuel for 30 min flight - 300 kg. Thus, the mass of fuel during takeoff in Cuzco, taking into account

Air Navigation stock is 624 kg, while off the pitch in the match - 631 kg.

3. Determination of the value of the commercial load.

The curb weight of the helicopter fuel (without payload) Jari takeoff at Cuoco is 7426 + 624 = 8050 kg, while off the pitch in the match-7426 + 631 = 8057 kg.

The amount of payload is the difference between maximum take-off mass, at which the helicopter can take off from the landing site in Cuzco and match pitch at a certain temperature with or without the influence of the effect of "air cushion" and the curb weight of the helicopter fuel. This maximum weight is taken from the nomogram helicopter.

Results count values ​​payload, as well as the number of passengers who are able to transport the helicopter from Cusco-match pitch-Cusco.

4. Determining the cost of tickets. Knowing the PED and the value of the payload, it is possible to determine the cost of tickets on the Cusco — Matchu-Pitchu route and back.

The cost of tickets (B) is determined from the total costs. Overhead is assumed to be 40% of total expenses. where n - the number of passengers transported in this variant of payload; 1,44 - total time both ways, h.

In this case, the cost of round-trip tickets, depending on the number of passengers transported by helicopter, and temperature conditions will range from up to 50 80 dollars.

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