ASSET

ASSET

Picture - Preserved ASSET vehicle at USAF Museum, Dayton, Ohio

Role: Spaceplane
Manufacturer: McDonnell Aircraft
First flight: September 18, 1963
Status: Museum piece
Primary user: United States Air Force
Number built: 6
Developed from: X-20 Dyna-Soar
Variants: Winged Gemini

Picture - ASSET pre-launch checkout.

ASSET, or Aerothermodynamic Elastic Structural Systems Environmental Tests was an experimental US space project involving the testing of an unmanned sub-scale reentry vehicle.

Development and Testing

Begun in 1960, ASSET was originally designed to verify the superalloy heat shield of the X-20 Dyna-Soar prior to full-scale manned flights. The vehicle's biconic shape and low delta wing were intended to represent Dyna-Soar's forward nose section, where the aerodynamic heating would be the most intense; in excess of an estimated 4,000 °F at the nose cap. Following the X-20 program's cancellation in December 1963, completed ASSET vehicles were used in reentry heating and structural investigations with hopes that data gathered would be useful for the development of future space vehicles, such as the Space Shuttle.

Built by McDonnell, each vehicle was launched on a suborbital trajectory from Cape Canaveral's Pad 17B at speeds of up to 6,000 m/s before making a water landing in the South Atlantic near Ascension Island. Originally, a Scout launch vehicle had been planned for the tests, but this was changed after a large surplus of Thor and Thor-Delta missiles (returned from deployment in the United Kingdom) became available.

Picture - ASSET-Thor combination on Pad 17B.

Of the six vehicles built, only one was successfully recovered and is currently on display at the National Museum of the United States Air Force in Dayton, Ohio.

Flights

Specifications

General characteristics

Crew: None
Length: 5.74 ft (1.75 m)
Wingspan: 4.57 ft (1.39 m)
Height: 2.73 ft (0.83 m)
Loaded weight: 1,190 lb (540 kg)
Powerplant: x— Hydrogen-peroxide reaction control thrusters

Picture - ASSET 3-view

Performance

Maximum speed: Mach 25
Range: 2,700 miles (4345.2288 km)
Service ceiling: 50 miles (80.4672 km)
Hypersonic L/D Ratio: 1:1

Related content

Comparable Aircraft

Molniya BOR-4
Martin-Marietta X-23 PRIME

Winged Gemini

In the mid-1960s, McDonnell proposed a variant of the Gemini capsule which retained the original spacecraft's internal subsystems and crew compartment, but dispensed with the tail-first ballistic reentry, parachute recovery and water landing.

Instead, the vehicle would be heavily modified externally into an ASSET-like lifting-reentry configuration. Post-reentry, a pair of stowed swing-wings would be deployed, giving the spacecraft sufficient L/D to make a piloted glide landing on a concrete runway using a skid-type landing gear (reinstated from the planned, but cancelled paraglider landing system), much like today's Space Shuttle.

According to Mark Wade's Encyclopedia Astronautica, the intent seems to have been to field a manned military spaceplane at a minimal cost following the cancellation of the Dyna-Soar program.

ASSET Pictures and ASSET for Sale.

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Source: WikiPedia