X-15 FLIGHT REQUEST

Flight No.: 2-28-48 Scheduled Date : August 29, 1962

Pilot: Major R. Rushworth

Subject of Test : Aerodynamic heating rates at high Mach number and high angle of attack.

Launch: Hidden Hills on magnetic heading 230°, ASAS "Armed," SAS 8-6-8

No. Time Alt V a q Event

1. 0 45 790 2 145 Launch, light engine, increase to 100%T, rotate until 2g is attained.

2. 24 48 1700 10 570 Maintain 2g until q = 30°, maintain q = 30°.

3. 32 55 2000 4 570 Pushover to 0g.

4. 55 73 3300 0 660 Reduce thrust to » 80% (Pc » 500 psi).

5. 65 78 3900 0 730 Roll to 80° left bank.

6. 69 80 4200 0 760 Increase a to » 20°, (5g maximum).
Modulate throttle to maintain 4800 ft/sec.

7. 91 85 4800 19 760 Burnout - turn as required to vector to Edwards. Reduce a to approx. 8°.

8. 110 85 4000 8 Disengage yaw damper - perform dv pulse at pilot's discretion.

9. 120 85 3600 8 Reengage yaw damper.

10. 140 87 3000 8 Disengage yaw damper - perform dv pulse at pilot's discretion.

11. 150 87 2800 8 Reengage yaw damper.

12. Vector to high key - speed brakes as required - jettison (H2O2 "OFF").

13. High key, check ventral armed, pressurize tanks at M = .8, push-to-test ball nose.

14. Before APU shutdown, cycle controls, retract flaps, set stabilizer trim to zero. Data off.

Notes: 1. Duration of flight approximately 9 min.

2. q vernier will be set at 30°, a crosspointer will null at 20°.

3. Emergency Lakes: Hidden Hills, Ballarat and Cuddeback.

4. No in-flight jettison check will be made.

Ground Rules for No Launch: 1. Malfunction of any SAS channel.

2. Malfunction of inertial system attitudes.

3. Malfunction of ball nose.

Alternate Situations After Launch: 1. If engine light cannot be accomplished within 30 sec., jettison propellants and land at Hidden Hills.

2. For delayed engine light, add 3 sec. to pushover time.

3. If radar or radio fail, proceed as planned.

4. For total pitch or roll damper failure, do not increase a above 8°.

5. For ball nose or attitude failure, vector to Edwards for landing.

6. For inadvertent engine shutdown:

0 - 45 sec Hidden Hills

45 - 55 sec Ballarat

55 - 70 sec Cuddeback

70 - Up sec Edwards


1.	0	45	790	2	145	Launch, light engine, increase to 100%T, rotate until 2g is attained.

2.	24	48	1700	10	570	Maintain 2g until q = 30°, maintain q = 30°.

3.	32	55	2000	4	570	Pushover to 0g.

4.	55	73	3300	0	660	Reduce thrust to » 80% (Pc » 500 psi).

5.	65	78	3900	0	730	Roll to 80° left bank.

6.	69	80	4200	0	760	Increase a to » 20°, (5g maximum). Modulate throttle to maintain 4800 ft/sec.

7.	91	85	4800	19	760	Burnout - turn as required to vector to Edwards. Reduce a to approx. 8°.

8.	110	85	4000	8		Disengage yaw damper - perform dv pulse at pilot's discretion.

9.	120	85	3600	8		Reengage yaw damper.

10.	140	87	3000	8		Disengage yaw damper - perform dv pulse at pilot's discretion.

11.	150	87	2800	8		Reengage yaw damper.