The Kinematic Design and Weight Estimation of a Flying V Main Landing Gear

At a time when there is a distinct drive for accelerated sustainability the Flying V is a promising new aircraft configuration with the potential for significantly higher efficiency than the current state-of-the-art. Up until this point the Landing Gear layout has only been investigated at an aircraft-level meaning there is limited knowledge on...

QuickScale 2.0: The development of a user-oriented interface for a weighing tool utilized in on-site weight measurement. Aiding in forensic early post-mortem interval estimation.

Post-mortem interval estimation (PMI) is a key part of forensic investigation. Accurately obtaining a PMI early in the investigative process improves the reconstruction of events, directs follow-up research and narrows down suspects in case of homicide. Currently, PMI is determined using Henssge’s nomogram requiring ambient temperature, rectal...

Weight Estimation Of Turboshaft Engines: Continuation in the development of WEST: a component based preliminary design and weight estimation tool for turbine engines

The need for more efficient aircraft has led to the conception of innovative engine configurations, such as the combined-cycle engine proposed by Delft University of Technology or the Water-enhanced turbofan developed by MTU and Pratt & Whitney. The evaluation of the potential benefits of these novel engine concepts requires detailed...

Weight estimation for pylons supporting large aero-engines: A KBE approach

The aviation industry confronts challenges from increased air traffic and environmental concerns. Enhancing engine efficiency becomes crucial due to persistent greenhouse gas emissions from air travel, particularly in long flights with high CO2 emissions. Higher by-pass ratios (BPR) can address this by boosting engine propulsive efficiency, yet...

Preliminary sizing methodologies for regional aircraft with liquid hydrogen fuel and SOFC-GT-Battery hybrid-electric powertrains

Solid Oxide Fuel Cell (SOFC) systems for aviation applications have been considered for their use as APUs or powertrains, as standalone systems or in combination with gas turbines, and both fueled by reformed Jet-A or by hydrogen. Most existing studies focus on powertrain performance modelling. In this work, traditional tube-and-wing regional...

Energy Efficiency Valuation: Estimating the increase in expected transaction price due to improved energy efficiency in the Dutch housing market

Recent advancements in causal inference and machine learning research have brought forward methods to estimate effects of interventions from observational data. The augmented inverse probability weighted (AIPW) estimator is such a method, which can be used to obtain estimates of potential outcomes. Potential outcomes are defined as a...

Weight Estimation of Gas Turbine Engines: Development of a Component-Based Preliminary Engine Design Tool

The need for more efficient aircraft has spawned the conception of a variety of novel engine and aircraft architectures, such as the combined-cycle engine proposed by researchers at Delft University of Technology. To evaluate the potential benefits of these concepts comprehensively, in-depth performance simulations are required. Furthermore,...

Weight Estimation of Superyachts

Superyachts are expected to be perfect since the owner pays millions for them, and the worst that could happen is tilting the ship once it floats. The lightweight, including the center of gravity, is essential to know with a high degree of certainty to prevent this. However, the lightweight is already expected in an early design phase, when...

Development of a preliminary sizing tool forstrategic decision making in composite fuselages using weight and cost optimization

This study is an attempt to develop a preliminary composite fuselage sizing tool for the decision making process utilizing analytical structural analysis equations and a bottom-up cost approach to estimate weight and cost. Previous research by several authors and companies is reviewed in order to define the knowledge gaps that the project is...

An Assessment of a Regional Turboprop Featuring Wingtip-Mounted Propellers: Design Integration Coupling Propeller-Wing Aerodynamics and Structural Wing Weight

The current focus in the aviation industry for more sustainable designs, could mean the revive of propeller propulsion, due to their relative high propulsion efficiency compared to jets. In addition, the application of wingtip-mounted propellers installed in tractor configuration can be used as tip-vortex attenuating devices, reducing the wing...

Weight & Balance Estimation with Automated Structural Analysis for Subscale Flight Models: A Knowledge Based Engineering Approach

Unconventional aircraft designs have the potential to lower the impact of aviation on emissions and climate as compared to conventional aircraft designs. However, the flight dynamics behaviour of such unconventional configurations must be carefully evaluated by studying Stability and Control (S&C) characteristics to design safe aircraft and...

Structural Sizing Method for Propulsive Empennage System: Weight Estimation of Ducted Propeller Systems that Provide Longitudinal and Lateral Stability

Flight Performance and Propulsion department of Aerospace Engineering, Delft University of Technology has proposed an effective and sustainable solution to the main challenges aviation is currently facing, namely the raising concerns regarding the environmental and health impact of the industry. Delft University Unconventional Concept (DUUC) has...

Semi-Analytical Closed-Wing Weight Estimation during Conceptual Design

One of the novel configurations that could revolutionize the aviation industry is the PrandtlPlane. The closed-wing design features a low front wing and a high rear wing, connected by a lateral surface. In this research, the rear wings of the configuration are attached to a set of fins. Previous conceptual closed-wing design studies have failed...

Investigation into the effect of relaxed static stability on a business jet's preliminary design

Knowledge-Based Engineering Approach to the Finite Element Analysis of Fuselage Structures

In this work a Knowledge-Based Engineering approach is presented for validating the results of a semi-analytical weight estimation method used for the conceptual design of conventional and oval fuselages structures. The validation of these results is carried out by comparing the structural component's line loads as calculated by the semi...

Landing gear design in an automated design environment

The design of the landing gear is one of the prime aspects of aircraft design. Literature describes the design process thoroughly, however the integration of these design methods within an automated design framework has had little focus in literature. Landing gear design includes different engineering disciplines including structures, weights,...

A Semi-Analytical Weight Estimation Method for Oval Fuselages in Novel Aircraft Configurations

Research in aircraft design is focusing on novel aircraft configurations in search for a step change in terms of overall transport efficiency. Aircraft design relies heavily on empirical methods, so-called Class 2 methods, to evaluate the performance of a design. Since these methods are based on statistical data their validity is limited when...

The Oval Fuselage: A New Structural Design Concept for Blended Wing Body Cabins

Faced with the decreasing fossil fuel reserves and the need to decrease its environmental footprint, the aviation industry is searching for alternative fuels and more fuel efficient engines and aircraft. With the current designs reaching their limits, the industry has turned its attention to the family of all lifting bodies. Particularly blended...