A novel approach to hybrid propulsion transfers

摘要: This paper introduces a hybrid propulsion transfer termed Hohmann Spiral, incorporating low and high-thrust technologies, analogous to the bi-elliptic transfer. To understand this fully it is compared standard high thrust Two critical specific impulse ratios are derived independent of time that determine point novel consumes exact amount fuel as two types. It found these valid for both circular elliptical starting orbit so long apogee coincides with target radius. An expression representing mass fraction dependent in order allow bound solution space. The final part investigates case studies, one Geostationary Transfer Orbit Earth based on Alphabus platform specification other from Low an near Moon. required complete former specified duration 90 days exceeds current technology such provides requirement future spacecraft. however, spacecraft significantly smaller mass, region 1000kg, (Max. at Launch =8100kg), same realistic low-thrust values (150mN, 300mN 450mN) within set days. In addition, shown utilising uprated thrusters (210mN, 420mN 630mN) saving can be made. could provide potential alternative second study maximum 150mN, but mission not highlight variation. HST offers savings roughly 5% approximately 1.5% different scenarios.