Liquefied Oil Gas
The joint LOG (Liquefied Oil Gas) research project, carried in close cooperation with BTU Cottbus, the Central Aerohydrodynamic Institute (TsAGI), and the Central Institute of Aviation Motors (CIAM), both located in Moscow. The project goal is the development of new technologies for optimized usage of oil gas in thermal engines. Testing of fuels based on Liquefied Oil Gases (LOG) for gas turbine combustors and piston engines. The QPAC work share in particular involves design, development and testing of a LOG storage tank as well as experimental testing using an Ultralight Aircraft. This project affords good experience to the applicants in the compressed/liquefied gas fuel storage, and aviation applications of such fuel – and acts as the primary stepping stone towards the current proposal.
Dieses Vorhaben wurde mit Mitteln des Ministeriums für Wirtschaft und Energie des Landes Brandenburg und des Bundes gefördert.
This project was funded by the Ministry of Economy and Energy of the State of Brandenburg and the Federal Republic of Germany.
ESTOLAS - Certification of hybrid aircraft
The FP7 project "Extremely Short Take Off and Landing All Surface” (ESTOLAS 2012), refers to the properties of the very short take-off and landing distances of the aircraft. Helicopter and vertical take-off aircraft are excluded; these are referred to as VTOL (Vertical Take Off and Landing). The term ‘hybrid’ is used for a system, which combines two or more technologies. The ESTOLAS is a hybrid aircraft which combines the features and benefits of helicopters and airplanes. The specialty of ESTOLAS against ESTOL is its ‘all surface’ ability, which enables the plane to take off and land on any natural surface such as desert, snow, ice, marsh, ice, water, etc. The hybrid aircraft ESTOLAS is intended to meet the demand of all existing areas of aviation. It is planned to be developed in different variants: small, medium, heavy and super heavy. These models differ mainly in their payload capacity and therefore in their possible applications as alternatives to helicopters and for transporting heavy goods. In this project QPAC performing the Safety assessment, JAR/CS Certification support & Risk analysis.
In the Frame of the European Community FP5 project, QPAC participated in a number of activities in the area of Advanced Aircraft Concepts, which includes the optimization and integration of cabin systems and the preliminary safety assessments for next generation blended wing body configurations (VELA/NACRE):
- Establishment of baseline system configurations
- Initiation and coordinating studies on new integration principles
- Identification of structure and cabin impacts on system integration
- Optimization of system integration within proposed aircraft layouts
- Coordinating trade off studies on structure, cabin, and system integration
- Particular risk studies for advanced aircraft configurations
- Proposing potential improvements on integration at aircraft level
Airport congestion and increased passenger numbers are the primary drivers leading to the development of larger aircraft. However as aircraft size increases, it becomes more and more difficult to achieve corresponding improvements in aircraft performance. It is believed that for large civil aircraft the “flying wing” design may offer improvements in aircraft performance that are significantly greater than those achievable by conventional aircraft. The VELA project was supported by the European Commission to stimulate research for innovative, efficient and environmental friendly concepts in air transport sector. VELA 2 is a baseline configuration for this Blended Wing Body Aircraft
- No strict separation between fuselage and wing.
- Short fuselage, but more available space in the width for cargo & passengers
- Equipped with 4 engines with corresponding Trent 900 technology-plants
- Engines are placed under the wings
- Double-rudder is designed
System Layout Simulation
The goals of a rapid prototyping based system layout integration approach are:
- Having at the earliest the best architecture and definition of the product as a response to the customers needs and requirements
- A reduction of the systems development cycle and risks
- To reduce modifications management cost
- Support an optimized certification process
- Having Quality Assurance as an integrated part of the engineering activities
Approach of System Layout Integration did allow us to develop improvements for the existing VELA 2 concept with the following result:
- Mass saving concerning installed pipelines
- Problems concerning feeder line between air conditioning and integrating unit possibly solvable
- Larger inclination angles feasible using central tank position
- Danger of the freezing up of water pipelines within the landing gear division
- Hot-air conduction of ATA36 installable behind the rear bulkhead
- Optimized route concept for electrical wiring
- Development of flexible monument connections
- Concept development for flexible electrical connection of cabin monuments, where a connection from the side or from the top is not feasible