Documents / Official release
This Defense Intelligence Reference Document (DIA-08-1011-001), dated 1 November 2010, was prepared by the Defense Intelligence Agency's Defense Warning Office under the Advanced Aerospace Weapon System Applications program. It covers nanosatellite technologies, laser Lightcraft propulsion, a weapon mission selection study and a multi-megawatt laser study. The author recommends that the Department of Defense, working with NASA, bring laser Lightcraft propulsion research back to the United States and restart the Air Force X-50LR test flight program.
From the source:Release of 2026-09-18 Incident: 11/1/10, Las Vegas, Nevada. Released with redactions. This document is a Defense Intelligence Reference Document (DIRD), a technical reference format used by the Defense Intelligence Agency (DIA) to capture baseline knowledge on a specific topic for later analytic use. DIRDs are best understood as reference and synthesis products rather than as original research. It is one of 38 DIRDs produced under the Advanced Aerospace Weapon System Applications Program (AAWSAP) between 2009 and 2011. Because AAWSAP’s scope permitted a broad range of supporting topics, not every DIRD in the series directly concerns aerospace systems or future threat assessment. The following summary reflects the DIRD’s scope and framing at the time of writing and should not be read as implying current validation of the concepts discussed. This DIRD examines laser-propelled “Lightcraft” as a possible low-cost method to launch very small satellites into low Earth orbit by using a remote high-energy laser to supply most of the propulsion energy rather than relying entirely on onboard energy sources. The report combines a survey of nanosatellite trends with a review of “Lightcraft” propulsion concepts, vehicle design, beam-control requirements, and mission studies, and argues that the most promising application is the launch of nano- or pico-satellites, especially Earth- and space-observing payloads of a few kilograms or less. It presents the concept as potentially much cheaper than conventional multistage rockets for very small payloads, while also noting significant practical constraints including strict beam-riding geometry, atmospheric losses, demanding pointing and adaptive-optics requirements, and heavy dependence on large ground-, sea-, or air-based laser infrastructure. Overall, the document presents laser “Lightcraft” as a technically plausible launch concept whose attractiveness depends on whether the supporting laser and beam-control system can be made reliable and economical at operational scale.
“Low Earth orbit”8 pages
UNCLASSIFIED/,'rOR: orrlCIAL USE 014Lf Chapter 5: Conclusion To reduce mission costs, advanced technology components and a novel laser propulsion system can make nanosats (and picosats) compact, lightweight, low power, and low cost. By producing a large quantity of nanosats for a given mission, the per-unit cost will be reduced to a small fraction of satellite procurements for traditional missions. Mission operation costs will be minimized by the incorporation of both onboard and ground autonomy, use of heuristic systems, and use of a novel laser propulsion system to launch the nanosats into LEO. Laser propulsion is an enabling technology in which a laser-propelled vehicle, called "Lightcraft," harnesses the energy of a high-energy laser beam and converts it into propulsive thrust. The laser-propelled Lightcraft is an ETO transportation system that develops quasi steady (airbreathing) thrust by pulsing at a variable rate along the fl ight trajectory to orbit, and then when it climbs above the atmosphere it begins to operate in the thermal rocket mode using onboard propellant to convert and expand the laser energy for propulsion. The Lightcraft is spin-stabilized and can be launched vertically upward or on a slant upward trajectory, hover in mid-air, and undergo powered descent and landing. The system is single-stage-to-orbit and completely reusable with no onboard propellant required (the reaction mass is free air), except for the small internal amount of propellant needed for final ascent to orbit and orbital maneuvering. MEMS FEEP thrusters could provide onboard attitude and stationkeeping propulsion. The Lightcraft specific impulse is essentially infinite (several thousand seconds in rocket mode), wh ile payload mass fractions are 50% to 95%. Laser-propelled Lightcraft systems are simple, reliable, safe, environmenta lly clean, and could have a very high all azimuth on-demand launch rate. This novel propulsion system reduces space launch costs by two to three orders of magnitude below today's levels, with estimated launch costs of $20 per kg to $600 per kg of payload, not including life-cycle and recurring launch operations costs. The entire Lightcraft launch system is comprised of a ground, sea, or airborne laser beam generator consisting of a power supply, a high-power (megawatt-class) laser beam generator/transmitter using novel beam optics, and automated tracking, hand-off and safety systems. The most promising military mission for laser-propelled Lightcraft is the placement of Earth and space observing nano-/pico-satellites of up to 3 kg mass into LEO. Such Lightcraft could also serve as a "Lightsat," because it would use the Lightcraft's laser propulsion optics as a telescope for observing military targets on Earth and in space. Such a Lightcraft system appears capable of reaching LEO at 1/Sth to 1/l0th the cost required for placing a sim ilar Lightsat system into LEO using multistage chemical rocket systems. Other potentia l missions inclu de using laser-propelled Lightcraft as ground/sea- or airborne-launched kinetic kill weapons to shoot down enemy ballistic missiles. Very innovative near-term missions cou ld also include deploying Lightcraft nano-/pico-satellites to form swarms of small spacecraft which cooperate coherently to form a real distributed system in wh ich the whole is more than the sum of the parts . This would be a constellation of small spacecraft each performing its separate function, but these functions combine to create at a central location a much larger virtual spacecraft, or sensor aperture, that exists solely because of the cooperation of the UNCLASSIFIED,<,<FOA QFFISIAL HSI!! 8HLY 68
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Official release, from the pursue collection. The PDF is mirrored here; the original link is above. 77 pages are in the text index: search them above, or from the library's search.