Design and development of a small scale fixed wing aerial vehicle for over the hill missions in urban warfare

Naqvi, Messam Abbas; Shah, Hassan Raza; Ali, Ahsen; Naeem, Fausz

doi:10.1109/ibcast.2014.6778155

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…Since the difference of the two models mainly existed at the end of the impact and lasted for only a short time, which has little effect on the overall impact characteristics, the difference can be neglected here. The scaled similitude rule presented in this paper is based on the principle of acceleration consistency; therefore, in order to reflect the visual collision characteristics of the scaled train, the acceleration results of scaled model simulation were restored to the full-scale data according to equation (11), which is used to compare with the real model. Figure 12 shows the comparison of the real and the scaled model of Car1 and Car2.…”

Section: Simulation Test For Trains Composed Of Multiple Carsmentioning

confidence: 99%

“…At present, the technology of the scaled model test has been widely used in various engineering fields to investigate the following: the aerodynamic performance of spacecraft, 11 the aerodynamic performance of high-speed trains, 12 the running stability of highspeed trains, 13 the vibration performance of railway vehicles, 14 the vibration characteristics of bridges, 15 the seismic and dynamic performance of buildings, 16 the explosive impact of bullet, 17 and so on. There also exist lots of novel similitude theories regarding the impacting area.…”

Section: Introductionmentioning

confidence: 99%

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Scale similitude rules with acceleration consistency for trains collision

Gao

Guan

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part F:

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This paper presents the scaled similitude rule for train collision, which follows the principle of acceleration consistency. If the similarity ratios of mass and initial impact speed of cars, crushing force, and initial length of the energy absorbing structures of trains with different proportions meet the requirements of the scaled similitude rule, the impact accelerations of each are considered to be consistent. The accuracy of the scaled similitude rule was analyzed by MATLAB simulation, which is based on the multibody dynamics theory. Before the analysis, the validation of the MATLAB model was verified based on the experimental model. Then the train-to-train collisions for two eight-car train sets with different similarity ratios were tested. Finally, the scaled similitude rule presented in this paper was found to be effective when the impact characteristics of the two models were compared.

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Section: Simulation Test For Trains Composed Of Multiple Carsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Scale similitude rules with acceleration consistency for trains collision

Gao

Guan

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part F:

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Section: Introductionmentioning

confidence: 99%

“…There is a specific need for over the hill or other side of the building missions where these small aerial robots can be launched and with onboard video link can communicate the location (exact coordinates) of offenders along with activity on the other (hostile) side [3]. The other utilizations include access and direct information from dirty, dull and dangerous (D 3 ) environments in case of major fire breakouts, natural calamities, chemical or biological attacks, radiation hazards and terrorist operations involving hostages etc. Other than their military utilizations, these small aerial robots have numerous applications like road traffic monitor-ing, hazardous material sensing, power lines & gas pipelines inspections, real estate aerial photography, wildlife surveys and media reporting etc [4].…”

Section: Introductionmentioning

confidence: 99%

Nature Inspired Flying Vehicles and Future Challenges in Aerospace

Naqvi

Abbas

Raza

et al. 2015

IJAET

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The challenges of modern urban warfare require high agility flying machines capable of flight in confined dirty, dull and dangerous (D 3 ) environments. Recent technological advancements in the field of aerospace and materials have enabled the exploration of flight regimes and designs similar to those of birds and insects. Flying robots with a size limit of 6 inches in all dimensions are called Micro Air Vehicles (MAVs) [1] and smaller ones with the size constraint of 1 inch are termed Nano Air Vehicles (NAVs). Fixed wing aerial vehicles are generally preferred in this flight regime due to simplistic design but these lack the hovering capability. Rotary wing designs are also being pursued with added hovering capability, but these cannot move faster through the air and their endurance is limited by the size and capacity of on-board batteries. In order to mimic the maneuverability of birds and insects, flapping wing designs are required which could produce lift and thrust efficiently using the same wing planform. Future, advancements in materials, manufacturing technology and miniaturization of electronics will enable design and development of flapping wing robots similar to natural birds and insects with very demanding mission profiles. This paper aims at highlighting the future requirements of urban warfare along with the challenges being faced to pursue flapping wing designs mimicking insects and birds flight.

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