X-15 FLIGHT REQUEST

X-15 FLIGHT REQUEST Flight No.: 1-73-124 Scheduled Date : June 27, 1967

Pilot: Major Wm. J. Knight

Purpose : 1. WTR Experiment (#20) - R. Bryant

2. Horizon Scanner (#17) - R. Bryant
3. Horizontal Stabilizer Alpha - G. Robinson
4. Yaw ASAS Checkout - J. Welsh

Launch: Smith Ranch #1 on magnetic heading 168°.

SAS HI-LO-HI (8-4-8), Pitch-Roll and Yaw ASAS Armed, both BCS "ON," RAS "OFF," Ventral "OFF."

Launch Point Coordinates: 39° 30' N, 117° 11' W

Instrumentation Engineer: Don Yount

No. Time Alt Vel a q Event

1. 0 45 790 0 145 Launch, light engine at 100% T. Rotate at a = 11° until q = 34°.

2. 28 50 1800 11 590 q = 34°. Maintain q = 34°.

3. 87 145 5700 8 71 Burnout. (Shutdown at 5800 fps if burnout has not occurred.) Turn RAS "ON," auto cutoff "ON." Pushover to a = 0°.

4. 113 200 5350 0 9 Extend experiment. Gradually pushover to q = 0°. (a > -5°). Maintain q & f » 0°.

5. 172 250 5075 0 1 Peak altitude. Maintain q = 0° until a = 20°.

6. 227 200 5400 20 9 Retract experiment. a = 20°. Maintain a = 20° until An = 5.0g. Turn RAS "OFF" at 1g.

7. 279 88 5100 20 730 An = 5g. Maintain An = 5g until Hdot = -200 fps.

8. 289 81 4450 18 800 Hdot = -200 fps. Pushover to maintain h = 80K.

9. 315 80 4000 2 695 50 N.M. Open speed brakes to 35° and pushover to Hdot = -400 fps. Begin gradual turn to Edwards.

10. 355 65 2800 4 700 Cuddeback. Vector to High Key. Speed brakes as required.

11. Disengage Yaw damper. Perform dv pulse. Disengage Yaw ASAS and perform dv pulse. Engage Yaw to Hi and cycle Yaw ASAS.

12. High Key - Check flap and "squat" circuit breakers in. Arm stick kicker and third skid. Engine Master OFF.

NOTES:

1. q vernier will be set at 34°, a crosspointer will null at 20°.

2. Emergency Lake: Mud, Grapevine, Cuddeback.

3. Flight Duration: Approximately 11 minutes.

4. Flight plan based on 60,000# thrust at 100%. Engine #104.

Total burn time at 100% T (60,000#) = 87.1 sec.

Minimum thrust = 33,750#.

Launch wt. = 35,070# Burnout wt = 15,726#

c.g. = c.g. =

5. Ground jettison check. (Accounted for in wts. and burn time.)

6. Precision attitudes pre-set:

Pitch = 0° (90.0)

Roll = 0° (90.0)

Heading = 168°

7. This flight will have a controlled launch time.

GROUND RULES FOR NO LAUNCH: 1. Radio, Radar or TM malfunction.

2. Malfunction of any SAS channel.

3. Malfunction of inertial platform.

4. Malfunction of Ball Nose.

5. Malfunction of either BCS.

6. Malfunction of Precision Heading.

7. WTR door pressure malfunction or target unavailability.

8. Malfunction of "RAS."

ALTERNATE SITUATIONS AFTER LAUNCH:

	Failure		Action

1.	Radio or Radar	1.	Proceed as planned.

2.	Any Damper Failure	2a.	0 - 35 seconds Pushover to a = 2° at 35 sec. Shutdown at 5800 fps (Hmax » 142K). Maintain Hdot = -100 fps. to 50 N.M. (M = 3.9, h = 80K).

		2b.	35 sec - Burnout Pushover to a = 2° at failure. Shutdown at 5800 fps. Use a = 10° if reentry is required.

		2c.	After Burnout Use a = 15° for entry. Do not pushover to negative a.

3.	Ball Nose Failure	3a.	0 - 35 seconds Pushover to 0g at 35 sec. Shutdown at 5900 fps. (Hmax » 105K). Fly level to M = 5, then Hdot = -200 fps to 50 N.M. (M = 3.5, h = 80K).

		3b.	35 sec. - Burnout Pushover to 0g when failure occurs. Shutdown at 5800 fps. Use q = 0° (dhmax = -25°) if reentry is required.

		3c.	After Burnout Use q = 0° (dhmax = -25°) for reentry.

4.	Attitude Failure	4.	Use a = 5° in place of q = 34° at 28 sec. Proceed with 3a, b, or c as applicable. (Use a = 20° for reentry).

5.	Inertial Failure	5.	Proceed as planned. After reentry, pushover when q has peaked and fly 650-700 q to Edwards. (S.B. to 35° at 50 N.M.)

6.	Delayed Light	6.	Use 2g for rotation. Proceed as planned.

	INADVERTENT ENGINE SHUTDOWN: 00 - 45 sec. Smith Ranch 45 - 68 sec. Mud (2600 fps) 68 - 77 sec. Grapevine (4000 fps) 77 - 79 sec. Cuddeback (4700 fps) 79 - Up Edwards (4900 fps)

Approved by

E. J. Adkins, Head

X-15 Research Project Office


1.	0	45	790	0	145	Launch, light engine at 100% T. Rotate at a = 11° until q = 34°.

2.	28	50	1800	11	590	q = 34°. Maintain q = 34°.

3.	87	145	5700	8	71	Burnout. (Shutdown at 5800 fps if burnout has not occurred.) Turn RAS "ON," auto cutoff "ON." Pushover to a = 0°.

4.	113	200	5350	0	9	Extend experiment. Gradually pushover to q = 0°. (a > -5°). Maintain q & f » 0°.

5.	172	250	5075	0	1	Peak altitude. Maintain q = 0° until a = 20°.

6.	227	200	5400	20	9	Retract experiment. a = 20°. Maintain a = 20° until An = 5.0g. Turn RAS "OFF" at 1g.

7.	279	88	5100	20	730	An = 5g. Maintain An = 5g until Hdot = -200 fps.

8.	289	81	4450	18	800	Hdot = -200 fps. Pushover to maintain h = 80K.

9.	315	80	4000	2	695	50 N.M. Open speed brakes to 35° and pushover to Hdot = -400 fps. Begin gradual turn to Edwards.

10.	355	65	2800	4	700	Cuddeback. Vector to High Key. Speed brakes as required.

11.						Disengage Yaw damper. Perform dv pulse. Disengage Yaw ASAS and perform dv pulse. Engage Yaw to Hi and cycle Yaw ASAS.

12.						High Key - Check flap and "squat" circuit breakers in. Arm stick kicker and third skid. Engine Master OFF.