X-15 FLIGHT REQUEST

Flight No. 1-12-21 Date of Request 8/26/60

Scheduled Date of Flight 8/30/60

Subject of Test: Stability, control, and performance research.

Airplane Configuration: Basic X-15 with two XLR-11 engines.

Launch: M = 0.82, Hp = 45,000 ft., SAS 4-4-8 at Silver Lake on magnetic heading of 248°.

No. Time Alt M a Event

1. 45 0.82 -- Launch, 8/8 thrust, 8° a climb, Vi min = 280 knots.

2. 40 1.2 8° SAS 4-2-2, rudder pulse - - SAS 4, 4, 8.

3. 42 1.2 8° Disengage YAR damper.

4. 70 2.1 8° Re-engage YAR damper.

5. 75 2.2 4° Push-over to 1/2 g and maintain.

6. 78 2.4 4° SAS 0-4-8, pitch pulse.

7. 80 2.9 4° SAS 0-4-8, pitch pulse - SAS 4-4-8.

8. 78 3.2 12° Pull-up to 12° a until burnout.

9. 78 3.1 12° After burnout, SAS 4-2-2, rudder pulse.

10. 79 2.9 0° Push-over to zero g, hold until descending.

11. 78 2.6 14° Pull-up to 14° a, rudder pulse.

12. 73 2.4 -- Push-over to zero g, then initiate 15° a left turn.

13. 69 2.0 15° SAS 0-2-2, pitch pulse.

14. 60 1.7 -- SAS 4-4-8, cycle speed brakes.

15. -- -- -- -- Perform 0-4-8 pitch pulses to M » 0.6.

16. SAS 4-4-8, vector to high key, jettison propellants.

17. Check ventral arm, pressurize tanks.

18. Landing: SAS 4-4-8, 300 knots approach, jettison ventral, flaps and gear down.

19. Immediately after touchdown, apply full rudder (direction as necessary for wind conditions). After approximately 6 seconds, apply full aileron control with the rudder.

20 Before APU shutdown, cycle controls, retract flaps and set stabilizer trim to zero - data off.

Notes:

1. Duration of flight » 10 minutes.

2. Requirements for emergency lake sites remain the same (Silver, 3 Sisters, and Cuddeback).

3. Pilot will call inertial altitude and pressure Mach number at 10,000 foot increments up to 70,000 feet.

Alternate Situations:

1. Pitch or roll SAS malfunction before launch will constitute an abort.

2. If YAW SAS malfunctions before launch proceed with original flight plan except for items 8 and 9. The pull-up and rudder pulse will be made at 8° a.

3. SAS failure after launch - Proceed to "Edwards Area" and reduce thrust to maintain M < 2.0.

4. With 6 or less chambers burning, position for landing at Silver Lake.

5. With 7 chambers burning proceed with original flight plan to M = 2.8 at Hp » 70K. Reduce to 5/8 thrust and maintain altitude until burnout, then resume original flight plan.

Launch wt. 33,500 lbs Landing wt. 14,400 lbs Pilot: Maj. R. M. White

Launch c.g. 21.4% Landing c.g. 19.0%

INSTRUMENTATION PARAMETER LIST

Basic (Altitude, airspeed, a, b, An)

Handling Qualities

Landing Gear

Horizontal Tail Loads (Strain Gages)

Fuselage Side-Fairing Vibration and Flutter

Upper and Lower Vertical Tail, Wing and Fuselage Pressure Distribution

Environmental Temperatures

Structural Temperatures

Free-Skin Temperatures

Wing Loads (Strain Gages)

Vertical Tail Hinge Moments

Lift and Drag (Including Base Pressure Measurements)

Inertial Attitude and Component Velocity (Stable Platform)

Physiological Package Except E. K. G.

1.	45	0.82		--	Launch, 8/8 thrust, 8° a climb, Vi min = 280 knots.

2.	40	1.2		8°	SAS 4-2-2, rudder pulse - - SAS 4, 4, 8.

3.	42	1.2		8°	Disengage YAR damper.

4.	70	2.1		8°	Re-engage YAR damper.

5.	75	2.2		4°	Push-over to 1/2 g and maintain.

6.	78	2.4		4°	SAS 0-4-8, pitch pulse.

7.	80	2.9		4°	SAS 0-4-8, pitch pulse - SAS 4-4-8.

8.	78	3.2		12°	Pull-up to 12° a until burnout.

9.	78	3.1		12°	After burnout, SAS 4-2-2, rudder pulse.

10.	79	2.9		0°	Push-over to zero g, hold until descending.

11.	78	2.6		14°	Pull-up to 14° a, rudder pulse.

12.	73	2.4		--	Push-over to zero g, then initiate 15° a left turn.

13.	69	2.0		15°	SAS 0-2-2, pitch pulse.

14.	60	1.7		--	SAS 4-4-8, cycle speed brakes.

15.	--	--	--	--	Perform 0-4-8 pitch pulses to M » 0.6.