Navaho G-26 Launch - Navaho G-26 Launch RISE 1 Credit: Tom Johnson. 26,124 bytes. 305 x 388 pixels.

The Navaho G-26 was a test version of the operational Navaho G-38 which would have been the fullfillment of the A-9/A-10 concept. Navaho was cancelled due to the success of faster, unstoppable ballistic missiles. But the engines, missile frame manufacturing techniques, inertial and stellar navigation equipment, and telemetry/guidance techniques developed for Navaho established the technical basis for all subsequent US rocket developments. The engine developed for an earlier version of Navaho was used in the Redstone rocket; that developed for the G-26 booster was used in the Atlas A and Atlas B ballistic missiles. The Navaho program was cancelled on 13 July 1957, but the already-built G-26 test missiles were flown to the end of 1958.

Liftoff Thrust: 108,840 kgf. Total Mass: 71,881 kg. Core Diameter: 1.8 m. Total Length: 28.0 m. Development Cost $: 679.80 million. in 1956 average dollars. Flyaway Unit Cost $: 20.00 million. in 1985 unit dollars. Cost comments: Development cost is for all versions.

• Stage Number: 1. 1 x G-26 Navaho Booster Gross Mass: 42,403 kg. Empty Mass: 11,337 kg. Thrust (vac): 122,786 kgf. Isp: 273 sec. Burn time: 76 sec. Isp(sl): 242 sec. Diameter: 1.8 m. Span: 1.8 m. Length: 23.3 m. Propellants: Lox/Alcohol No Engines: 2. XLR-83-NA-1

• Stage Number: 2. 1 x G-26 Navaho Missile Gross Mass: 29,478 kg. Empty Mass: 9,977 kg. Thrust (vac): 6,802 kgf. Isp: 1,200 sec. Burn time: 6,500 sec. Isp(sl): 0 sec. Diameter: 1.6 m. Span: 8.7 m. Length: 20.7 m. Propellants: Air/Kerosene No Engines: 2. XRJ47-W-5

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Navaho G-38 Engine - Navaho G-38 3 Engine Cluster 47,245 bytes. 306 x 436 pixels.

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• Hermes Mach 3 ramjet proposed.

  Von Braun briefs Hermes; V-2 first stage, ramjet second stage, cruise at 2,100 mph at 12 miles altitude.

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  Navaho vs Burya Credit: © Mark Wade. 10,772 bytes. 530 x 475 pixels.

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• Navaho XLR-43 engine test.

  First full-thrust test of 75,000 pound liquid rocket engine for the Navaho (XLR43-NA-1) conducted by North American at Santa Susana, Calif.

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  Navaho G-26 3 View Credit: © Mark Wade. 5,089 bytes. 291 x 573 pixels.

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• Navaho engine reaches 100,000 lbs thrust.

  At Santa Susana, Calif., a complete liquid-rocket engine assembly (Navaho) having a thrust in excess of 100,000 pounds was fired for the first time.

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  Navaho Credit: © Mark Wade. 16,508 bytes. 208 x 504 pixels.

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• Navaho engine reaches 200,000 lbs thrust.

  At Santa Susana, Calif., a complete liquid-rocket engine assembly (Navaho) having a thrust in excess of 200,000 pounds was fired for the first time.

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  Navaho development - Navaho development sequence Credit: © Mark Wade. 7,273 bytes. 614 x 366 pixels.

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• X-10 B-64 Navaho first flight.

  Prototype of North America's B-64 Navaho, a X-10 ramjet guided missile, made its initial flight.

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  Navaho G-26 - Navaho G-26 160 pixel Credit: © Mark Wade. 2,128 bytes. 107 x 414 pixels.

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• Navaho inertial system tested.

  Inertial guidance system for Navaho X-10 missile tested in first flight at Downey, Calif.

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  Navaho G-26 - Navaho launch of 22 March 1957 8,666 bytes. 141 x 437 pixels.

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• Navaho first automatic recovery.

  First successful recovery of a Navaho X-10 using fully automatic approach and landing system, made at Edwards AFB, Calif.

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  Navaho G-26 on Pad 9 - Navaho G-26 on Pad 9A Credit: Tom Johnson. 38,757 bytes. 358 x 406 pixels.

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• Navaho cancelled.

  Navaho ramjet intercontinental missile program canceled by Air Force.

• Navaho program cancelled

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  Navaho by Night - Navaho launch complex at night 34,330 bytes. 523 x 480 pixels.

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  The supersonic intercontinental cruise missile was made obsolete by the Atlas ICBM. Already-built Navaho G-26 test missiles were flown to the end of 1958. At the time the program was cancelled full-range G-38 missiles were in fabrication with first flight test planned by the end of 1958. The engines, missile frame manufacturing techniques, inertial and stellar navigation equipment, and telemetry/guidance techniques developed for Navaho established the technical basis for all subsequent US rocket developments.

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  Navaho G-26 - Navaho launch of 22 March 1957 20,137 bytes. 326 x 487 pixels.

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• 221 - Gibson, James N, The Navaho Missile Project, Schiffer, 1996.
• 281 - Nicholas, Ted G., U.S. Missile Data Book, 1983, Seventh Edition, Data Search Associates, Fountain Valley, California, 1982..

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Navaho G-26 Booster - Navaho G-26 Booster Cutaway Credit: Tom Johnson. 20,456 bytes. 650 x 211 pixels.

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Navaho G-26 Missile - Navaho G-26 Missile Cutaway Credit: Tom Johnson. 42,175 bytes. 621 x 416 pixels.

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Navaho G-26 Cutaway 71,387 bytes. 905 x 619 pixels.

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Navaho G-26 Cutaway 18,452 bytes. 193 x 441 pixels.

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