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This paper aims to present an investigation on flight quality analysis and design of tilt-rotor aircraft combined with corresponding flight quality specifications.

From the perspective of modal characteristics of tilt-rotor aircraft, it focuses on the analysis of the change rules of the longitudinal short-term motion mode, lateral roll convergence mode, spiral mode and Dutch roll mode. Then, the flight quality design research is carried out using the explicit model tracking control method. The quantitative relationship between flight quality requirements and explicit model is established. Accordingly, the closed-loop flight quality of XV-15 tilt-rotor aircraft is evaluated.

The stability of spiral mode is the result of the interaction of various aerodynamic derivatives and spiral instability occurs in helicopter mode. The other motion modes are stable in full flight mode and meet the requirements of level 1 specified in ADS-33E-PRF and MIL-F-8785C flight quality specifications. There is a quantitative relationship between flight quality requirements and explicit model, and the flight quality of tilt-rotor aircraft is improved through the explicit model tracking control method.

The presented analysis results showed the influence of motion modes and flight quality and the effectiveness of explicit model tracking control method in flight quality improvement, which could be considered as new information for further flight quality design of tilt-rotor aircraft.

The originality of the paper lies in the proposed design and analysis method of the flight quality of tilt-rotor aircraft from the direction of the influence of its aerodynamic derivatives and motion modes.

This study aimed to examine young, middle-aged and mature air-travelers’ perceptions of the quality levels of in-flight physical surroundings and service encounters, and investigated the drivers of their repurchase intentions in the low-cost airline industry.

A sample of 402 passengers on international flights was used. An ANOVA and a series of multiple-regression analyses based on Baron and Kenny’s (1986) suggestion were used.

In general, significant differences in quality attributes were identified across age groups. Additionally, the role of these quality components, perceived level of the airfare and trust in the airline were found to be decisive in low-cost airline passengers’ decision formation. Further, the mediating impact of perceived level of the airfare and trust was identified.

Research about air-travelers’ decision formation by considering their age is rare in a low-cost airline context. Results of the present study provided meaningful insights for researchers and practitioners in the airline industry.

The general objective of this study was to examine the influence of airline service quality on passenger satisfaction and loyalty. To achieve this, the research was guided by four specific objectives to which data collection was effected mainly by interview method using fully structured questionnaires.

The study used random sampling technique and it covered 303 respondents on international flights using Entebbe International Airport. Data were analyzed using statistical package for social sciences 16, were χ2 was used to test the hypothesis and regression analysis was performed to examine the relationships between variables.

Findings indicated that the quality of pre-flight, in-flight and post-flight services had a statistically significant effect on passenger satisfaction. In addition to that, passenger satisfaction as a mediating variable also had a significant effect on passenger loyalty. It was noted that passenger satisfaction differed from person to person as some were more interested in off board facilities, others onboard, others in the quality of food while others wanted more extra luggage.

It was recommended that airline management should consider developing various strategies for improving service quality based on demographic characteristics of the customers such as occupation, age, gender and education level.

This study examined the factors influencing willingness-to-repurchase for each class of airline service, and integrate the constructs of service quality, satisfaction and willingness-to-repurchase which were rooted on Engel-Kollat-Blackwell (EKB) model. The study focuses on the domestic and international arrival of passengers at Murtala Muhammed International Airport in Lagos and Nnamdi Azikwe International Airport in Abuja. Information was gathered from domestic and foreign passengers who had post-purchase experience and had used the airline's services more than once. The survey data were obtained concurrently from arrival passengers at two major international airports using an electronic questionnaire through random and purposive sampling techniques. The data was analysed using the ordinal logit model and structural equation model. From the 606 respondents, 524 responses were received but 489 responses were valid for data analysis and reporting and were obtained mostly from economy and business class passengers. The study found that the quality of seat pitch, allowance of 30 kg luggage permission, availability of online check-in 24 hours before the departing flight, quality of space for legroom between seats, and the quality of seats that can be converted into a fully flatbed are the major service factors influencing willingness-to-repurchase economy and business class tickets. Also, it was found that passengers' willingness to repurchase is influenced majorly by service quality, but not necessarily influenced by satisfaction. These results reflect the passengers' consciousness of COVID-19 because the study was conducted during the heat of COVID-19 pandemic. Recommendations were suggested for airline management based on each class.

The purpose of this paper is to provide some rational perspectives for the flight‐to‐liquidity event rather than simply attributing it to the change in investor sentiment.

The paper builds a model to highlight the inherent difference in investors' investment horizon, and thus their sensitivity to changes in transaction costs in the stock and bond markets. When stock market deterioration results in higher trading costs, the existing marginal investor shifts wealth to bonds instead of remaining indifferent between stocks and bonds. At the new equilibrium, there is a higher fraction of bond ownership and a longer average investment horizon among stock holders. The paper then empirically tests the model predictions using data in the US stock and bond markets.

The authors find evidence strongly supporting this paper's theoretical predictions. Days with high stock illiquidity, high stock volatility and low stock return are associated with high yield spread in the bond market. This contemporaneous linkage between the stock market and the bond market is even stronger during periods with strong net outflows from stock mutual funds and strong net inflows to money market funds. The paper also demonstrates the existence of a maturity pattern that the predicted effects, especially the effects of stock illiquidity, are much stronger over shorter maturities.

The finding of this model that the investment horizon of the marginal investor (and thus the equilibrium price impact in the bond market) responds to changes in market conditions contributes to the theoretical debate on whether transaction costs matter. The flow evidence strengthens our understanding of the asset pricing implications of portfolio rebalancing decisions, and the maturity effect bolsters the case for flights to liquidity/quality due to heterogeneity in investment horizon without resorting to investor irrationality or behavioral attributes. In fact, it is arguably difficult to reconcile with a behavioral explanation.

The purpose of this study was to examine airline passengers’ repurchase decision-making process by developing a sturdy theoretical framework comprising in-flight core-product and service-encounter quality, brand attitude, image, trust and love. The authors also attempted to examine if such decision formation differs across full-service and low-cost airlines in South Korea.

A quantitative method was used to achieve research objectives. For assessment of the conceptual framework and test of research hypotheses, a structural equation modeling and test for metric invariance were used.

The results revealed that in-flight product and service-encounter quality significantly affected their subsequent variables, and their impact on intention was mediated by brand attitude, image, trust and love. In addition, brand image along with brand trust included the strongest influence on intention. Findings also indicated that the relationships among brand attitude, image, trust and love significantly differed between full-service and low-cost airlines.

Increasing the customer retention rate is a key component of airline business success. This study made an important contribution to advancing the existing knowledge on what factors induce airline customers’ decision to repurchase a particular airline product and how such factors are interrelated with each other within the proposed model.

This research was the first to explore that the relationship strength among brand image, brand attitude, brand trust and brand love are not equal between full-service and low-cost airline passenger groups.

In this paper, the suboptimal algorithm of adaptive control system is presented, which is specially adjusted for automatic flight control systems of general aviation and commuter aircraft, and unmanned aircraft (UMA) that conduct flights in atmospheric turbulence. At first, the method could be applied for correcting these changes in flight dynamics parameters, which cannot be compensated with the aid of an open adaptation loop. At the same time, full identification of aircraft model in real time is not required. This method is based on the estimation of most typical parameters of the aircraft mathematical model, which are most closely related to parameters, which are unmeasurable during flight, like aircraft real mass and position of center of gravity. The structure of an adaptation algorithm of aircraft flight control laws is based on the expert knowledge in the field of flight dynamics and is the result of optimization calculations. The examples which show attaining better flight comfort of the PZL M20, “Mewa” general aviation aircraft and quality improvement of the UMA, “Vector” pitch angle automatic control, have been presented.

The purpose of this paper is to present analysis and primary evaluation of different control laws implemented on experimental indirect (fly‐by‐wire) flight control system designed for perspective general aviation aircraft.

The control law tests have been accomplished on the flight simulation stand equipped with side‐stick, throttle lever and flight instrument display. Every evaluator was caring out 2‐4 five min instrument flights (IR) according to command shown on the screen. PZL‐110 general aviation aircraft properties and seven modes of control system operation were modeled and examined.

Results of evaluation by 45 commercial pilots are analyzed and handling qualities of the small aircraft equipped with the indirect flight control system (fly‐by‐wire) have been examined. In this way, the most convenient control law was chosen for design the user‐friendly, human‐centered, simplified software‐based flight control system.

The result of research can be implemented on real indirect flight control system dedicated to general aviation aircraft.

This paper presents the practical approach for analysis of handling qualities of general aviation aircraft equipped with indirect flight control system. This kind of works concern to military and transport airplanes are known, however there are no published work in the area of small aircraft so far.

This paper aims to identify the main themes shared in online reviews by airline travellers, as well as which of these themes were linked with higher and lower value for money ratings.

The research used mixed content analyses (i.e. quantitative and qualitative) to examine 1,200 reviews of six airline companies shared by airline travellers in a social media platform.

The analyses revealed nine themes in descriptions of airline travel experiences. These are the core services during “flights”, “airport” operations, crew and ground “staff”, ticket “classes”, “seats”, inflight “services”, “entertainment”, overall experiences of “airlines” and post-purchase recommendations of with which companies to “fly”. Low value for money ratings are linked with the “airport” and “flights” themes.

The results offer useful insights into airline travellers’ overall experiences based on social media information and facilitate the identification of the main themes linked with different value for money ratings.

The purpose of this paper is to investigate the effect of the crisis on the pricing of asset quality attributes. This paper uses sales transaction data to examine whether flight from risk phenomena took place in the US office market during the financial crisis of 2007-2009.

Hedonic regression procedures are used to test the hypothesis that the spread between the pricing of low-quality and high-quality characteristics increased during the crisis period compared to the pre-crisis period.

The results of the hedonic regression models suggest that the price spread between Class A and other properties grew significantly during the downturn.

Our results are consistent with the hypothesis of an increased price spread following a market downturn between Class A and non-Class A offices. The evidence suggests that the relationships between the returns on Class A and non-Class A assets changed during the period of market stress or crisis.

These findings have implications for real estate portfolio construction. If regime switches can be predicted and/or responded to rapidly, portfolios may be rebalanced. In crisis periods, portfolios might be reweighted towards Class A properties and in positive market periods, the reweighting would be towards non-Class A assets.

The global financial crisis has demonstrated that real estate markets play a crucial role in modern economies and that negative developments in these markets have the potential to spillover and create contagion for the larger economy, thereby affecting jobs, incomes and ultimately people’s livelihoods.

This is one of the first studies that address the flight to quality phenomenon in commercial real estate markets during periods of financial crisis and market turmoil.