I. ATMOSPHERIC EXIT MANEUVER A. Estimate the time consumed in setting and modulating the throttle (% of scanning time) 3 %.

B. Rate the ability of the pilot to stabilize at the desired exit acceleration and angle.

1. With center stick Good .

2. With side stick Not used .

C. Rate the X-15 presentation for control of exit: Good. had improved heading.
  1. Estimate accuracy in maintaining the constant l.5 g rotation ± .15 g.

2. Did you retrim or hold stick force Little retrimming - Acceleration helped.

3. % of time scanning g meter 20 %.

4. Was q = 35° acquired and held easily on the vernier (without excessive control inputs) Yes.

5. Did angle (q = 35°) feel steep after F-104 zoom flights Only because of thrust acceleration.

6. What accuracy was f held to during climb ± 10°.

7. Was side stick retrimmed or was force held to maintain q = 35° and estimate accuracy ±1/2°, %. (Center stick used)

D. 1. Did engine shutdown cause abrupt changes in airplane stability or trim No. If so, explain .

2. Pilot's ability to time the thrust cutoff.

(a) Easily accomplished at exact time. Yes .

(b) Comprehension good, execution difficult

(c) Comprehension difficult, execution good

(d) Both contributing factors

(Suspect more difficult reaching under higher long. acceleration)

3. Did the longitudinal acceleration effect trajectory control at any time Yes . If yes, how? Helped pull nose up initially - No bother after that.
E. Comments or elaboration on the above items.
II. BALLISTIC FLIGHT A. Rate the effectiveness of the aerodynamic controls Still effective.

B. Rate the effectiveness of the reaction controls Adequate.

C. Was the effectiveness crossover noted X yes no. (Near peak)

D. Was the proportionality of the reaction controls apparent, yes no. (Not used) Was the half detent noticed X yes. (Appears as stop)

E. Was the reaction control deadband satisfactory for preventing inadvertent control inputs yes no. (Did not observe any - however on preflight check inadvertent inputs occurred)

F. Rate the presentation for this control task Satisfactory.

G. Was null bar (a), angle of attack meter (b) or both for cross reference (c) used, for pushover c for a = b .

H. Was the airplane attitude controlled to ±6° pitch and yaw, ±20° roll ( ); ±3° pitch and yaw, ±lO° roll ( X ); or ±l° pitch and yaw, ±3° roll ( ).

I. Was the outside visual environment through peripheral visual useful as an attitude reference X yes, no. Not noticed .

J. Was control task performed leisurely or hurriedly. Leisurely - but errors were not allowed to build up.

K. Indicate the effect of zero g environment on the ability of the pilot to

Control O % X none

Breathe normally O % X none

Any unusual feelings or sensations. None - except brief falling


L. Did negative pitch rate of the trajectory noticeably increase the difficulty of the control task. Yes no X .

M. Did airplane oscillations at low q provide feel enabling the pilot to lead the airplane motions to supplement the pilot's display, Yes no X .

N. Was reaction control ( ) aerodynamic control ( X ) trim ( X ) or combinations ( X ) used to set up entry angle of attack.

III. ATMOSPHERIC ENTRY MANEUVER A. Rate the control task of the pilot in setting up the entry 1.5 .

Control used center X side. Trim used Full nose up.

B. Rate the presentation for this part of maneuver 2 .

C. Rate the control task for the pullout at high g 2 .

D. Note the effect of entry acceleration on pilot. Control O % X no.

Vision 0 % X no.

IV. GENERAL CONSIDERATIONS A. The outstanding deficiency noted in the airplane or systems during the flight resulted from vehicle stability , damping SAS, control or presentation . If control stick or system, presentation, instrument . Deficiency noted during Reentry part of flight.

B. Indicate portion of the flight requiring maximum pilot effort Reentry . Maximum effort required X 100-75%, (Due to vibration problem), Climbout 75-50%, Ballistic 50-25%, or 25-0%.

C. Illustrate scanning technique used. (Below)

E. Were techniques used and problem noted encountered on the simulator X yes no.

F. Was the fixed-base flight simulator adequate for pilot preparation for a flight involving this control task and acceleration environment? Yes X no . (Only after having had centrifuge runs)

G. Are airplane presentation, aerodynamic controls, reaction controls, piloting techniques and flight techniques adequate for the next higher buildup flight X yes no. (Minor instrument relocation changes required)