Task variants and sequence of task

Given data:

Calculation of the ejector gas generator based on aircraft gas turbine engines for all variations made at standard atmospheric conditions: TN = 288K, pH = 101 325 Pa, and at a relative density of working fluid γ = 1.

Depending on the number of groups (subgroups) each of which elects its value power of the ejector expansion (Table 3).

The value of the ejector expansion degree

Table 3

Ejector expansion degree f	№ group (subgroup)
1,00	1,25	1,50	2,00

Other basic data are chosen from tabl.4 depending on the number corresponding to the last and penultimate digit of student record-book number.

Given data for task variants

Table 4

№ of variant by the last digit of record-book	Type and model of GTE		№ of variant by penultimate digit of student record-book	Temperature at ejector outlet Т 3, К
1.	APU^* ТГ-16
2.	APU АИ-9
3.	TJE (APU) РУ19А-300
4.	TJE ВК-1
5.	TJE РД-3М-500
6.	TJE АИ-20
7.	TJE АИ-24
8.	TJE ТВ3-117
9.	TSE ТВ2-117А
0.	TJE АИ-25

*Note: APU – auxiliary power unit.

To solve this problem it is necessary:

1. From type of GTE determine such parameters: nozzle outlet section diameter d in m, the gas flow rate through the nozzle in kg/s, gas temperature in the outlet section of the nozzle in K, velocity of gas in the outlet section of the nozzle in m/s, using for this technical specification manual or operating manual, thermo-gas-dynamic calculation of appropriate engine, reducing all data in tabl.5.

GTE parameters

Table 5

Type of GTE	GTE parameters
Diameter of the outlet section of the nozzle d, [m]	Gas flow rate through the nozzle , [kg/s]	Gas temperature in the outlet section of the nozzle , [K]	Velocity of the gas in the outlet section of the nozzle [m/s]

2. Carry out determination of parameters in accordance with item 3.3. Parameter determination procedure.

3. Carry out drawing of scheme of ejector gas generator on A4 or A3.Прослушать

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