Displaying items by tag: space segment
MOLTEK Consultants Ltd
MOLTEK is an international resourcing and consultancy organisation providing knowledge and resources in core skills to organisations within the Space, Defence, Aviation, Air traffic Management, Financial Service and Manufacturing industries. MOLTEK was formed in 1995, specifically to provide dedicated and focused consultancy. MOLTEK now has offices and subsidiaries in several countries, including the United Kingdom, the United States. Our services include consultancy, contract services, permanent recruitment, operations, facilities management and training.
Boeing 601 satellite
The Boeing 601 satellite is a body-stabilized geostationary satellite.
The Boeing 601 was introduced in 1987 to meet anticipated requirements for high-power, multiple-payload satellites for such applications as direct television broadcasting to small receiving antennas, very small aperture terminals for private business networks, and mobile communications. The basic configuration features as many as 48 transponders and offers up to 4,800 watts.
A more powerful version, the Boeing 601HP, made its debut in 1995. The HP versions can carry payloads twice as powerful as the classic Boeing 601 models, through such innovations as gallium arsenide solar cells, advanced battery technology, and an optional xenon ion propulsion system. The 601HP features as many as 60 transponders and provides up to 10,000 watts.
All Boeing 601 spacecraft use the same basic bus design, enabling Boeing to realize efficiencies gained by production volume, tooling investments and quantity buys.
Boeing 702 satellite
The Boeing 702 satellite is a family of geostationnary satellites designed and manufactured by the company Boeing.
Its design requirements include lower cost and high reliability. It offers a broad spectrum of modularity. A primary example is payload/bus integration. After the payload is tailored to customer specifications, the payload module mounts to the common bus module at only four locations and with only six electrical connectors. This design simplicity confers advantages. First, nonrecurring program costs are reduced, because the bus does not need to be changed for every payload, and payloads can be freely tailored without affecting the bus. Second, the design permits faster parallel bus and payload processing. This leads to the third advantage: a short production schedule.
Further efficiency derives from the 702's advanced xenon ion propulsion system (XIPS), which was pioneered by Boeing. XIPS is 10 times more efficient than conventional liquid fuel systems. Four 25-cm thrusters provide economical stationkeeping, needing only 5 kg of fuel per year - a fraction of what bipropellant or arcjet systems consume. Using XIPS for final orbit insertion conserves more mass as compared to using an on-board liquid apogee engine. Customers can apply the weight savings to increase the revenue-generating payload, to prolong service life, or to change to a less expensive launch vehicle (when cost is based on satellite mass).