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  2. SpaceX Dragon 2 - Wikipedia

    en.wikipedia.org/wiki/SpaceX_Dragon_2

    The spacecraft, which consists of a reusable space capsule and an expendable trunk module, has two variants: the 4-person Crew Dragon and Cargo Dragon, a replacement for the Dragon 1 cargo capsule. The spacecraft launches atop a Falcon 9 Block 5 rocket, and the capsule returns to Earth through splashdown .

  3. Quad City Challenger - Wikipedia

    en.wikipedia.org/wiki/Quad_City_Challenger

    This model incorporates many revisions to the basic Challenger design, including a larger and re-shaped vertical fin, fiberglass wing tips and redesigned landing gear. Qualifies as a US Light sport aircraft, 110 reported completed and flown by the fall of 2011. [1] [8] [11] Challenger II LSS XL-65 Two seats in tandem, 29 ft (8.8 m).

  4. Steeple compound engine - Wikipedia

    en.wikipedia.org/wiki/Steeple_compound_engine

    The Fitchburg engine (illus.) [ii] was one of a series of similar engines offered in various configurations.The steeple arrangement required a high ceiling to the engine house, but had two advantages: [6] it took up less floor space than a horizontal engine and it also required less complex masonry foundations beneath the engine.

  5. SpaceX Dragon - Wikipedia

    en.wikipedia.org/wiki/SpaceX_Dragon

    Dragon 1 was the original Dragon iteration, providing cargo service to the ISS. It flew 23 missions between 2010 and 2020, when it was retired. On May 25, 2012, NASA astronaut Don Pettit operated the Canadarm2 to grapple the first SpaceX Dragon and berth it to the Harmony module. This marked the first time a private spacecraft had ever ...

  6. Stationary steam engine - Wikipedia

    en.wikipedia.org/wiki/Stationary_steam_engine

    William Roberts horizontal tandem compound engine - 'Peace'. Marshall undertype steam engine. There are different patterns of stationary steam engines, distinguished by the layout of the cylinders and crankshaft: Beam engines have a rocking beam providing the connection between the vertical cylinder and crankshaft.

  7. Tandem-rotor aircraft - Wikipedia

    en.wikipedia.org/wiki/Tandem-rotor_aircraft

    Tandem-rotor helicopters, however, use counter-rotating rotors, with each cancelling out the other's torque. Therefore, all of the power from the engines can be used for lift, whereas a single-rotor helicopter uses some of the engine power to counter the torque. [1] An alternative is to mount two rotors in a coaxial configuration.

  8. Dragon Challenge - Wikipedia

    en.wikipedia.org/wiki/Dragon_Challenge

    Dragon Challenge operated with several steel and fiberglass trains. Each train had eight cars with four seats for a total of 32 riders per train. The trains' front seat resembled a mouth, while the rest bore a resemblance to hands. The Hungarian Horntail trains resembled a blue ice dragon while the Chinese Fireball trains resembled a red fire ...

  9. Sea Dragon (rocket) - Wikipedia

    en.wikipedia.org/wiki/Sea_Dragon_(rocket)

    The Sea Dragon was a 1962 conceptualized design study for a two-stage sea-launched orbital super heavy-lift launch vehicle. The project was led by Robert Truax while working at Aerojet , one of a number of designs he created that were to be launched by floating the rocket in the ocean.