Requirements for a Hydrogen Powered All-Electric Manned Helicopter

Datta, Anubhav

doi:10.2514/6.2012-5405

Cited by 8 publications

(2 citation statements)

References 14 publications

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“…The response surface for the propeller characteristics is based on the Blade-Element-Momentum theory, including a modified version of XFOIL (RFOIL) for the airfoil data. The already implemented battery discharge model in SUAVE [13] is based on empirical correlations, which are interdependent on the state of discharge [14] and voltage level [15]. The other electric components are implemented with fixed efficiencies or empirical models.…”

Section: Powertrain Architecture and Energy Networkmentioning

confidence: 99%

Preliminary hybrid-electric aircraft design with advancements on the open-source tool SUAVE

Mangold¹,

Eisenhut²,

Brenner³

et al. 2023

J. Phys.: Conf. Ser.

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The large variety of possible propulsion architectures for environmentally friendly and sustainable aircraft concepts create opportunities for the overall aircraft design. In particular, hybrid-electric aircraft have an increased number of additional components that must be implemented in the aircraft design tool. Primary and secondary energy sources can be used to achieve the necessary reduction in emissions. The preliminary aircraft design tool SUAVE offers the basic setup necessary to integrate the electrification of the propulsion system into the aircraft design. For this purpose, SUAVE has been extended to enable an iterative sizing loop for hybrid-electric aircraft. Hence, many propulsion architectures are easily adaptable. Additional components can be included and their interactions are considered. Furthermore, the fidelity levels of the models are modifiable. Moreover, the top-level aircraft requirements are transformed into a sizing chart to calculate the necessary power and wing loading. Thereby, a reasonable hybridization factor of installed power can be identified. This definition of hybridization implies a specific energy management strategy. As a result, hybridization and the energy management strategy are directly coupled and have to be considered together. Finally, in the postprocessing, the raw data is processed and can be evaluated with figures of merit. This procedure converts the results into a descriptive value and facilitates the comparison to other configurations. The figures of merit include evaluations for emissions, operational aspects and development costs and effort.

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Section: Powertrain Architecture and Energy Networkmentioning

confidence: 99%

Preliminary hybrid-electric aircraft design with advancements on the open-source tool SUAVE

Mangold¹,

Eisenhut²,

Brenner³

et al. 2023

J. Phys.: Conf. Ser.

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“…Fuel cell technology continues to mature, but generally lags battery technology in achieving higher specific energy densities. 14 The reduction in moving parts and elimination of the high temperature environment associated with gas turbines should result in favorable system reliability as the fuel cells mature. The future cost of hydrogen fuel remains an important unknown.…”

Section: Propulsion Alternativesmentioning

confidence: 99%

Air Vehicle Design and Technology Considerations for an Electric VTOL Metro-Regional Public Transportation System

Sinsay

Tracey

Alonso

et al. 2012

12th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference and 14th AIAA/ISSMO Multidisciplinary Analysis And

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This paper examines the potential of VTOL aircraft to supplement commuter rail services in a metropolitan or regional transportation system. An interdisciplinary study was conducted to examine the feasibility of integrating an aerial transport system into the existing airspace using a fleet of electrically powered rotorcraft. A notional network of stations and overall operating schedule were constructed based on the existing regional rail networks serving the San Francisco Bay Area. To define the VTOL vehicles, the rotorcraft sizing code NDARC has been modified to accommodate electric propulsion sizing. Initial sizing results indicate that battery technologies available by 2030, coupled with the "shorthop" ranges of the proposed aerial network, result in feasible aircraft designs. These vehicle designs, while significantly larger in gross weight than their Jet A powered turboshaft equivalents, may become economically viable in a business environment dominated by fuel costs. Finally, these initial study results are informing follow-on study efforts.

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