X-15 Index - Missions

Highest flights

The FAI set the limit of space at 100 kilometers (62.1 mi). But in the 1960s, the USAF considered an altitude of 50 miles (80 km) (80.5 km) as the limit of space; USAF and NASA pilots and crew exceeding that altitude at that time could be awarded the Astronaut badge. Thirteen X-15 flights went higher than 50 miles (80 km) and two of these reached over 100 kilometers.

Flight

Date

Top Speed

Altitude

Pilot

Flight 62

17-Jul-62

3,831 mph (6,165 km/h)

59.6 miles (95.9 km)

Robert M White

Flight 77

17-Jan-63

3,677 mph (5,918 km/h)

51.4 miles (82.7 km)

Joe Walker

Flight 87

27-Jun-63

3,425 mph (5,512 km/h)

53.9 miles (86.7 km)

Robert Rushworth

Flight 90

19-Jul-63

3,710 mph (5,970 km/h)

65.8 miles (105.9 km

Joseph A. Walker

Flight 91

22-Aug-63

3,794 mph (6,106 km/h)

67.0 miles (107.8 km)

Joseph A. Walker

Flight 138

29-Jun-65

3,431 mph (5,522 km/h)

53.1 miles (85.5 km)

Joe H. Engle

Flight 143

10-Aug-65

3,549 mph (5,712 km/h)

51.3 miles (82.6 km)

Joe H. Engle

Flight 150

28-Sep-65

3,731 mph (6,004 km/h)

55.9 miles (90.0 km)

John B. McKay

Flight 153

14-Oct-65

3,554 mph (5,720 km/h)

50.4 miles (81.1 km)

Joe H. Engle

Flight 174

01-Nov-66

3,750 mph (6,040 km/h)

58.1 miles (93.5 km)

William H. Dana

Flight 190

17-Oct-67

3,856 mph (6,206 km/h)

53.1 miles (85.5 km)

William 'Pete' Knight

Flight 191

15-Nov-67

3,569 mph (5,744 km/h)

50.3 miles (81.0 km)

Michael J. Adams     ✝

Flight 197

21-Aug-68

3,443 mph (5,541 km/h)

50.6 miles (81.4 km)

William H. Dana

HIGHEST FLIGHTS

Fatal ✝

Flight

Date

Top Speed

Altitude

Pilot

 

Flight 97

5-Dec-63

4,017 mph (6,465 km/h)

19.1 miles (30.7 km)

Robert Rushworth

Flight 89

18-Jul-63

3,925 mph (6,317 km/h)

19.8 miles (31.9 km

Robert Rushworth

Flight 86

25-Jun-63

3,910 mph (6,290 km/h)

21.7 miles (34.9 km)

Joseph A. Walker

Flight 64

26-Jul-62

3,989 mph (6,420 km/h)

18.7 miles (30.1 km)

Neil Armstrong

Flight 59

27-Jun-62

4,104 mph (6,605 km/h)

23.4 miles (37.7 km)

Joseph A. Walker

Flight 45

09-Nov-61

Robert M. White

Flight 188

03-Oct-67

William 'Pete' Knight

Flight 175

18-Nov-66

William 'Pete' Knight

Flight 137

22-Jun-65

3,938 mph (6,338 km/h)

29.5 miles (47.5 km)

John B. McKay

Flight 105

29-Apr-64

3,905 mph (6,284 km/h)

19.2 miles (30.9 km)

Robert Rushworth

FASTEST FLIGHTS

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Nigel G Wilcox

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© Copyright Reserved - United Kingdom
Ideal Screen Composition 1024 x 768

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