| Pilot | Agency | Flights | Aircraft |
|---|---|---|---|
| Neil Armstrong | NACA | 4 | 48-1385 |
| John McKay | NACA | 13 | 48-1385 |
| Stuart Childs | USAF | 1 | 48-1385 |
| Frank Everest | USAF | 2 | 48-1385 |
| Horace Hanes | USAF | 1 | 48-1385 |
| Richard Harer | USAF | 1 | 48-1385 |
| Stanley Holtoner | USAF | 1 | 48-1385 |
| Arthur Murray | USAF | 1 | 48-1385 |
| Jack Ridley | USAF | 2 | 48-1385 |
| Robert Stephens | USAF | 1 | 48-1385 |
| Vehicle Flight # |
Date | Pilot | Aircraft | Agency | Velocity -Mach- |
Altitude - m - |
Comments |
|---|---|---|---|---|---|---|---|
| X-1B #1 | September 24, 1954 | Jack Ridley | 48-1385 | USAF 1 | ? | ? | Planned powered flight. Turbopump overspeed caused abort. Glide flight. |
| X-1B #2 | October 6, 1954 | Jack Ridley | 48-1385 | USAF 2 | ? | ? | Planned powered flight. High lox-tank pressure caused abort. Glide flight. |
| X-1B #3 | October 8, 1954 | Frank Everest | 48-1385 | USAF 3 | ? | ? | First powered flight. Checkout and familiarization. |
| X-1B #4 | October 13, 1954 | Robert Stephens | 48-1385 | USAF 4 | ? | ? | - |
| X-1B #5 | October 19, 1954 | Stuart Childs | 48-1385 | USAF 5 | ? | ? | - |
| X-1B #6 | October 26, 1954 | Horace Hanes | 48-1385 | USAF 6 | ? | ? | - |
| X-1B #7 | November 4, 1954 | Richard Harer | 48-1385 | USAF 7 | ? | ? | - |
| X-1B #8 | November 26, 1954 | Stanley Holtoner | 48-1385 | USAF 8 | ? | ? | - |
| X-1B #9 | November 30, 1954 | Frank Everest | 48-1385 | USAF 9 | ? | ? | - |
| X-1B #10 | December 2, 1954 | Frank Everest | 48-1385 | USAF 10 | 2.3 | 21,336 (70,000 feet) | Second flight of X-1 over Mach 2 after Chuck Yeager in 1953 in X-1A |
| X-1B #11 | August 14, 1956 | John McKay | 48-1385 | NACA 1 | ? | ? | Pilot familiarization. Nose gear failed on landing. Minor damage. |
| X-1B #12 | August 29, 1956 | John McKay | 48-1385 | NACA 2 | ? | ? | Cabin pressure regulator malfunctioned. Inner canopy cracked. Low speed, low altitude maneuvers. |
| X-1B #13 | September 7, 1956 | John McKay | 48-1385 | NACA 3 | 1.8 | 17,080 | High speed flight. Heating data gathered. |
| X-1B #14 | September 18, 1956 | John McKay | 48-1385 | NACA 4 | ? | ? | Erratic engine start. Glide flight. |
| X-1B #15 | September 28, 1956 | John McKay | 48-1385 | NACA 5 | ? | 18,300 | Three chamber engine flight. Heating data obtained. |
| X-1B #16 | January 3, 1957 | John McKay | 48-1385 | NACA 6 | 1.94 | ? | Last aerodynamic heating data flight. |
| X-1B #17 | May 22, 1957 | John McKay | 48-1385 | NACA 7 | 1.45 | 18,300 | Flight instrumentation check. Control pulses at speed. |
| X-1B #18 | June 7, 1957 | John McKay | 48-1385 | NACA 8 | 1.5 | 18,300 | Supersonic maneuvers at speed and altitude to determine dynamic and static stability and control characteristics. |
| X-1B #19 | June 24, 1957 | John McKay | 48-1385 | NACA 9 | 1.5 | 18,300 | Supersonic maneuvers at speed and altitude to determine dynamic and static stability and control characteristics. |
| X-1B #20 | July 11, 1957 | John McKay | 48-1385 | NACA 10 | ? | ? | Aborted after launch. Gear door open warning. Propellants jettisoned. Glide flight. |
| X-1B #21 | July 19, 1957 | John McKay | 48-1385 | NACA 11 | 1.65 | 18,300 | Control pulses, 2 g wind-up turn, sideslips. |
| X-1B #22 | July 29, 1957 | John McKay | 48-1385 | NACA 12 | 1.55 | 18,300 | Enlarged wing tips installed to simulate addition of reaction controls. |
| X-1B #23 | August 8, 1957 | John McKay | 48-1385 | NACA 13 | 1.55 | 18,300 | Stability, control tests. Accelerated maneuvers, control pulses, pull-ups. |
| X-1B #24 | August 15, 1957 | Neil Armstrong | 48-1385 | NACA 14 | ? | ? | Pilot familiarization. Nose gear failed on landing. Minor damage. |
| X-1B #25 | November 27, 1957 | Neil Armstrong | 48-1385 | NACA 15 | ? | ? | First reaction-control flight. |
| X-1B #26 | January 16, 1958 | Neil Armstrong | 48-1385 | NACA 16 | ? | ? | Low-altitude, low-mach reaction-control tests. |
| X-1B #27 | January 23, 1958 | Jack McKay | 48-1385 | NACA 17 | 1.5 | 16,775 | Reaction-control tests. Last NACA flight. |
