FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2610326081> ?p ?o ?g. }

• W2610326081 abstract "The Pegasus Air-Launched Space Booster is an innovative new space launch vehicle now under full-scale development in a privately-funded joint venture by OSC and .Hercules Aerospace Company. Pegasus is a three-stage, solid-propellant, inertially-guided, all-composite winged vehicle that is launched at an altitude of 40,000 ft from its carrier aircraft. The 41,000 Ib vehicle can deliver payloads as massive as 900 Ib to low earth orbit. This status report on the Pegasus development program first details the 'advantages of the airborne launch concept, then describes the design and performance of the Pegasus vehicle, and concludes with a review of the progress of the program from its conception in April 1987 through January 1989. First launch of Pegasus is scheduled for 31 July 1989 as a launch servipe under contract to the Defense Advanced Research Projects Agency. The second DARPA flight is scheduled for 15 September 1989. THE ADVANTAGES OF AIRBORNE LAUNCH Pegasus was conceived to provide a. more flexible and more efficient launch system for small space payloads by taking advantage of the many benefits inherent in the airborne launch approach. As designed, the Pegasus system achieves a substantial improvement in payload performance relative to comparable ground-based launch vehicle designs, while also providing numerous advantages in operational flexibility. The advantages of airborne launch, together with current technologies and production approaches, yields a more cost-effective launch system for small satellites as well. The performance advantage of the air-launched Pegasus derives from five major contributing factors, each of which has the effect of reducing the required change in velocity or delta-V required to achieve orbit. The first contribution results directly from the potential and kinetic energy imparted to the vehicle by the carrier aircraft at the launch conditions of 4.0,000ft, altitude and Mach 0.8. Qualitatively, this might be considered equivalent to using the carrier aircraft as a (reusable) zeroth stage, however quantitatively the contribution is roughly only 2% of the total required orbital velocity. A second contribution results from improvements in propulsion efficiency. The specific impulse of each stage (most particularly the first stage) benefits from airborne launch in two ways. The lower outside static pressure at 40,000 ft {approximately one quarter of sea-level pressure) yields a higher specific impulse for a given nozzle expansion ratio. In addition, the expansion ratio of the first stage motor (40:1) has been chosen to optimize performance over the altitude range of first stage burn (from 40,000 ft to 200,000 ft). The resulting improvement in specific impulse relative to a ground-launched first stage with a typical 8:1 expansion ratio nozzle is better than 20 sec*" @default.
• W2610326081 created "2017-05-12" @default.
• W2610326081 creator A5037843786 @default.
• W2610326081 date "1989-01-01" @default.
• W2610326081 modified "2023-09-27" @default.
• W2610326081 title "Paper Session II-B - The Pegasus Air-Launched Space Booster" @default.
• W2610326081 hasPublicationYear "1989" @default.
• W2610326081 type Work @default.
• W2610326081 sameAs 2610326081 @default.
• W2610326081 citedByCount "0" @default.
• W2610326081 crossrefType "journal-article" @default.
• W2610326081 hasAuthorship W2610326081A5037843786 @default.
• W2610326081 hasConcept C106125477 @default.
• W2610326081 hasConcept C119599485 @default.
• W2610326081 hasConcept C122555611 @default.
• W2610326081 hasConcept C127413603 @default.
• W2610326081 hasConcept C134066672 @default.
• W2610326081 hasConcept C146978453 @default.
• W2610326081 hasConcept C158379750 @default.
• W2610326081 hasConcept C167740415 @default.
• W2610326081 hasConcept C178802073 @default.
• W2610326081 hasConcept C203165030 @default.
• W2610326081 hasConcept C2984309673 @default.
• W2610326081 hasConcept C31258907 @default.
• W2610326081 hasConcept C41008148 @default.
• W2610326081 hasConcept C832551 @default.
• W2610326081 hasConceptScore W2610326081C106125477 @default.
• W2610326081 hasConceptScore W2610326081C119599485 @default.
• W2610326081 hasConceptScore W2610326081C122555611 @default.
• W2610326081 hasConceptScore W2610326081C127413603 @default.
• W2610326081 hasConceptScore W2610326081C134066672 @default.
• W2610326081 hasConceptScore W2610326081C146978453 @default.
• W2610326081 hasConceptScore W2610326081C158379750 @default.
• W2610326081 hasConceptScore W2610326081C167740415 @default.
• W2610326081 hasConceptScore W2610326081C178802073 @default.
• W2610326081 hasConceptScore W2610326081C203165030 @default.
• W2610326081 hasConceptScore W2610326081C2984309673 @default.
• W2610326081 hasConceptScore W2610326081C31258907 @default.
• W2610326081 hasConceptScore W2610326081C41008148 @default.
• W2610326081 hasConceptScore W2610326081C832551 @default.
• W2610326081 hasLocation W26103260811 @default.
• W2610326081 hasOpenAccess W2610326081 @default.
• W2610326081 hasPrimaryLocation W26103260811 @default.
• W2610326081 hasRelatedWork W109142514 @default.
• W2610326081 hasRelatedWork W1502391935 @default.
• W2610326081 hasRelatedWork W1988701496 @default.
• W2610326081 hasRelatedWork W2059773659 @default.
• W2610326081 hasRelatedWork W2159016481 @default.
• W2610326081 hasRelatedWork W2182804958 @default.
• W2610326081 hasRelatedWork W2313803402 @default.
• W2610326081 hasRelatedWork W2325916850 @default.
• W2610326081 hasRelatedWork W2327238953 @default.
• W2610326081 hasRelatedWork W2327482129 @default.
• W2610326081 hasRelatedWork W2333904819 @default.
• W2610326081 hasRelatedWork W2508717579 @default.
• W2610326081 hasRelatedWork W254214345 @default.
• W2610326081 hasRelatedWork W3151660054 @default.
• W2610326081 hasRelatedWork W65196090 @default.
• W2610326081 hasRelatedWork W68078457 @default.
• W2610326081 hasRelatedWork W762256344 @default.
• W2610326081 hasRelatedWork W812692717 @default.
• W2610326081 hasRelatedWork W932238461 @default.
• W2610326081 hasRelatedWork W1640001551 @default.
• W2610326081 isParatext "false" @default.
• W2610326081 isRetracted "false" @default.
• W2610326081 magId "2610326081" @default.
• W2610326081 workType "article" @default.