All the flights of tests, consequence of a major review, the plane need a test to mach 2, which was allowing to verify the good functioning of the system of measurement of the temperature of the air of entry to the engine and his action on the unit of control of supply of fuel to the engine.

The flight to mach 2 was realized in one corridor between Villarobledo and Castejon and a height between 35.000 and the 50.000.

In the ascent to Villarobledo and as part of the flight of tests, is observed the pressurization of the cockpit, which should indicate 5.000 up to exceeding the 18.500 of height. From this moment, by means of the functioning of a valve, that, automatically there was supporting in the cockpit a pressure of 5 PSI (pounds per square inch) Superior to exterior.

This additional pressure does that to 27.000 of height, the cockpit is supported to 10.000 and to 35.000 of height the cockpit is supported to 13.000.

The checkings and observations that produce in the flight to mach 2 are the following ones:

-          TEMPERATURE of AIR of ENTRY to the ENGINE, to ascend with power to 100 %, as the air is cooled it does that, for a certain volume of air of entry to the engine, this is denser more cold and less dense the more warm.

-           For this phenomenon, the UNIT of CONTROL of FUEL, it reacts sending more or less flow of fuel to the engine, which makes increase or diminish RPM of the engine.

This way, if the temperature of the air is of -20ºC the RPM falls down of 100 % to 98 % and if the temperature is of -30ºC the RPM will fall down to 94 %, all this while the NOZZLES of the tewels of gas exit is supported between 1,5 and 3,5.

-          Once come to the 35.000, the AUTOMATIC PILOT puts to obtain an exact maintenance of the height.

Overflying Villarobledo puts course to Castejón and is begun to verify:

-          ALTITUDE of COCKPIT, 20.000

-          FUEL, 4.300 pounds as minimum to initiate the test.

-          LIGHTS of NOTICE, tunr off.

-          OXYGENAT giving and normal remnant.

-          ENGINE, postburner to the maximum.

-          SPEED, TIME, FUEL and DISTANCE, to verify according to the following table:

What means that since the acceleration is initiated, pass 5 minutes and half up to reaching the Mach 2.0 are crossed 74 miles and 2.900 pounds of fuel languish.

During the acceleration, the temperature of the air of entry to the engine is raising, which allows to verify the functioning of the sensor on the unit of control of fuel, which on having received this information, it will inject more fuel to the engine, up to coming to a maximum of 104 RPM.

-          MACH 1.0, To observe as the instruments of pressure, registers a sudden oscillation and then they remain stable. One seems to observe a certain silence in the communications and no other physical indication of the supersonic flight.

-          CIT (control of the temperature of the air of entry), to monitor it attentivly. Normally to 35.000 the exterior air will be between -35ºC and-40ºC, but due to the rub of the surface of the plane it warms up rapidly and when come closer Mach 2 the air can be to 120ºC.

The structural limit of the compressor is from 121ºC, by what there is ignited a light that says SLOW for what in this moment the engine diminishes to relenti, removes the automatic pilot and o of a pull is raised from 45.000 to 50.000, taking advantage of the speed of which we arrange and the return to the base

We will support the height while the speed is diminishing and approximately 42.000 and 300 KTS indicated it will be becoming to subsonic speeds.

-          DECREASE, according to the distance to the base and the remaining fuel, will be used one of these methods:

· BRAKES OUT:                   Approximately 50 miles are crossed.

                                               It gets to descend approximately 7 minutes.

                                               Approximately 70 pounds languish.

                                               Decrease in 5.500 feet/minute up to height of traffic.

· BRAKER INSIDE:              Approximately 24 miles are crossed.

                                               It gets to descend approximately 3,5 minutes.

                                               Approximately 42 pounds languish

                                               Decrease in 11.150 feet/minute up to height of traffic.

    Height of the base in 2.000
    Height of the traffic in 1.500
    Height of beginning approximately 45.000

If arrived to have approximately 1.300 pounds of remaining fuel, there will be ignited a light of notice of COMBUSTIBLE MINIMUM, which can generate a delicate situation, if the maneuver of approximation is bad and it is necessary to do engine and to the air and new approximation, approximately 500 pounds of fuel were needed.

-          LANDING, to ask for permission to enter traffic of airport and to fit the altimeter if it had not been done before.

-           FLAPS, in take-off (landing).

-          SPEED, of 325 KTS.

-          ALTITUDE, of 1.500.

-          ON the HEADBOARD, authorized by TWR, strong turn in sense of the traffic.

-          AERODYNAMIC BRAKES, out and observing the hydraulic pressure.

-           LANDING GEAR, down with less than 260 KTS, supporting height and course opposite to the track, to observe train

       blockaded with lights of green color and hydraulic low pressure and recovering.

-          FLAPS, in position of landing to 240 KTS, to change direction to final supporting 200 KTS and descendi

-          FINAL, to fly 170 KTS for a weight of 15.000 pounds.

-          LANDING, wheels in the track to 140 KTS, to support brakes out and to extract parachute in the moment to put the wheel of knob, putting brakes to ceiling softly until the "antiskid" works and to give up to return to apply the sequence of stopped. The plane have to be stopping in approximately 2.500.

-          RIDE, to give up the parachute in the indicated place.

-          FLAPS, in position landing.

-         ELECTRONIC EQUIPMENT, disconnects except RADIO and BROWSER INERCIAL.

-          AERODYNAMIC BRAKES, inside.

-          SAFETY TWEEZER of the SEAT, putting.

-          COMPENSATING, in position of takeoff.

-          PARKING, position of the FLAPS up.

-          INERCIAL, to annotate mistakes and to pass it to ALIGN, to wait 1 minute and turn off.

-          RADIO, disconnected.

-          STOPPED of ENGINE, by means of sign to the mechanic and gases to STOP.

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