Encyclopedia Astronautica
Silver Lake DZ


Air-launched rocket drop zone known to have been used for 14 launches from 1960 to 1967, reaching up to 41 kilometers altitude.

Longitude: -115.9250 deg.
Latitude: 35.3900 deg.

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Associated Launch Sites

Silver Lake DZ Chronology


1960 May 12 - . 16:47 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 003. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 1-7-12.
  • X-15A test - . Nation: USA. Agency: NASA; USAF. Apogee: 23 km (14 mi). Summary: Maximum Speed - 3397 kph. Maximum Altitude - 23738 m..

1960 May 19 - . 16:46 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 003. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 1-8-13.
  • X-15A Alt Buildup test - . Nation: USA. Agency: NASA; USAF. Apogee: 33 km (20 mi). Summary: Maximum Speed - 2558 kph. Maximum Altitude - 33222 m..

1960 August 4 - . 16:59 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 003. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 1-9-17.
  • X-15A test - . Nation: USA. Agency: NASA; USAF. Apogee: 23 km (14 mi). Summary: Maximum Speed - 3533 kph. Maximum Altitude - 23809 m. Unofficial world speed record. This topped Captain Apt's speed of 2,094 mph attained in the X-2 on September 27, 1956..

1960 August 12 - . 16:48 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 003. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 1-10-19.
  • X-15A High Alt test - . Nation: USA. Agency: NASA; USAF. Apogee: 41 km (25 mi). Maximum Speed - 2851 kph. Maximum Altitude - 41605 m. Established a new altitude record for a manned vehicle of 136,500 feet. This topped Captain Kincheloe's record altitude of 126,200 feet attained on September 7, 1956, in the X-2 rocket research aircraft.

1960 August 19 - . 16:34 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 003. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 1-11-21.
  • X-15A test - . Nation: USA. Agency: NASA; USAF. Apogee: 23 km (14 mi). Summary: Maximum Speed - 3510 kph. Maximum Altitude - 24343 m..

1960 September 10 - . 19:45 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 008. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 1-12-23.
  • X-15A Stability/Control test - . Nation: USA. Agency: NASA; USAF. Apogee: 24 km (14 mi). Summary: X-15 Flight 21 (Stability/Control).

1961 February 7 - . 20:56 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 008. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 1-21-36.
  • X-15A Stab./Control test - . Nation: USA. Agency: NASA; USAF. Apogee: 23 km (14 mi). Summary: Maximum Speed - 3660 kph. Maximum Altitude - 23820 m. Last XLR-11 flight..

1961 March 7 - . 18:28 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 008. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 2-13-26.
  • X-15A Mach 4 flight test - . Nation: USA. Agency: NASA; USAF. Apogee: 23 km (14 mi). Summary: Maximum Speed - 4674 kph. Maximum Altitude - 23610 m..

1961 August 10 - . 18:27 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 003. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 1-22-37.
  • X-15A XLR-99, beta-dot test - . Nation: USA. Agency: NASA; USAF. Apogee: 23 km (14 mi). Summary: Maximum Speed - 4401 kph. Maximum Altitude - 23830 m. Lost cabin pressure..

1961 October 3 - . 18:40 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 003. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 1-23-39.
  • X-15A VO Stability test - . Nation: USA. Agency: NASA; USAF. Apogee: 23 km (14 mi). Summary: Flight made with lower ventral off. Maximum Speed - 4553 kph. Maximum Altitude - 23770 m..

1961 December 20 - . 22:45 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 003. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 3-1-2.
  • X-15A MH-96 test - . Nation: USA. Agency: NASA; USAF. Apogee: 24 km (14 mi). Summary: First flight for X-15 # 3. Maximum Speed - 4026 kph. Maximum Altitude - 24700 m..

1964 May 21 - . 17:39 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 003. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 3-29-48. FAILURE: Emergency landing at Cuddleback Lake..
  • X-15A SUV/BLN test - . Nation: USA. Agency: NASA; USAF. Apogee: 19 km (11 mi). Summary: Premature engine shutdown at 41 sec. Maximum Speed - 3001 kph. Maximum Altitude - 19568 m..

1967 April 26 - . 19:20 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 008. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 3-58-87. FAILURE: Emergency landing at Silver Lake..
  • X-15A Telem/HT/Guidance test - . Nation: USA. Agency: NASA; USAF. Apogee: 16 km (9 mi). Summary: Maximum Speed - 1871 kph. Maximum Altitude - 16280 m..

1967 May 17 - . 17:45 GMT - . Launch Site: Silver Lake DZ. Launch Pad: 35.3 N x 116.1 W. Launch Platform: NB-52 003. LV Family: X-15. Launch Vehicle: X-15. LV Configuration: X-15 3-59-89. FAILURE: Severe tail oscillations..
  • X-15A Telem/HT/Guidance test - . Nation: USA. Agency: NASA; USAF. Apogee: 21 km (13 mi). Summary: Maximum Speed - 5112 kph. Maximum Altitude - 21670 m..

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