The Satellite Launcher is a high altitude plane carrying a small rocket propelled satellite.
|“|| A conventional jet equipped with a small rocket to demonstrate feasibility of rocket launches from high altutude [sic].
The Satellite Launcher may be based on DARPA's ALASA (Airborne Launch Assist Space Access) concept for launching a small satellite into orbit with a rocket carried by an airplane.
The rocket has two stages, the first powered by a 48-7S "Spark" Liquid Fuel Engine and the second powered by a pair of LV-1R "Spider" Liquid Fuel Engines. The upper stage includes the probe core and scientific experiments.
The satellite is capable of getting into orbit; because of thrust-to-weight issues, the best practice is to place the launcher into a fast and fairly steep climb (20-30 degrees with afterburner active), with the goal of releasing at 4-5 km of altitude. The satellite can have as much as 500 m/s of delta-V remaining after achieving orbit, enough to reach high Kerbin orbit with the instruments.