Performance Investigation of Nylon-Kevlar Ringslot Parachute

Swadesh Kumar; Anurag Yadav; S.M. Jain; Mahboob Ahmed; S.P. Singh

doi:10.14429/dsj.64.4950

Swadesh Kumar Aerial Delivery Research and Development Establishment, Agra
Anurag Yadav Aerial Delivery Research and Development Establishment, Agra
S.M. Jain Aerial Delivery Research and Development Establishment, Agra
Mahboob Ahmed Aerial Delivery Research and Development Establishment, Agra
S.P. Singh Aerial Delivery Research and Development Establishment, Agra

DOI: https://doi.org/10.14429/dsj.64.4950

Keywords: Ringslot, Kevlar, Nylon, opening shock, wind tunnel, taschengurt

Abstract

Kevlar material is being used in parachute systems require high strength-to-weight ratios or becoming resistance to sustain high temperatures. However, Nylon-Kevlar parachutes are popular these days and are first preference of the parachute designers specially for recovery system of reentry vehicles. Tests of using Kevlar suspension lines, radials, vent and skirt re-enforcements, risers demonstrated that the Kevlar material can be used successfully in Ringslot parachute. The opening shock experienced by the parachute does not differ from all-Nylon parachutes. The parachute is much lighter and capable of withstanding higher load and therefore can be used for extraction or deceleration in recovery system of reentry vehicles. The design and performance of a hybrid Ringslot was investigated experimentally in sled test. The experimental method and performance data are described in this paper.

Defence Science Journal, Vol. 64, No. 4, July 2014, pp. 406-410, DOI:http://dx.doi.org/10.14429/dsj.64.4950

Author Biographies

Swadesh Kumar, Aerial Delivery Research and Development Establishment, Agra

Mr Swadesh Kumar received his MTech (Aerospace Engineering) from Indian Institute of Technology, Kharagpur, in 2006. Currently he is working as a scientist in Aerial Delivery R&D Establishment (ADRDE), Agra. His areas of work include: Design, testing & analysis of parachute systems.

Anurag Yadav, Aerial Delivery Research and Development Establishment, Agra

Mr Anurag Yadav received his BTech (Mechanical Engineering) from DEI Agra in 2004. Currently he is working as a scientist in Aerial Delivery R&D Establishment (ADRDE), Agra. His areas of work include: Design, fabrication & testing of parachute systems.

S.M. Jain, Aerial Delivery Research and Development Establishment, Agra

Mr Surendra M. Jain received his BTech from National Institute of Technology, Hamirpur, India in 2001 and MTech (RF Design and Technology) from Indian Institute of Technology, Delhi in 2010. Currently he is working as a Scientist ‘D’ in Aerial Delivery R&D Establishment (ADRDE), Agra. He has been working in the field of telemetry and instrumentation. He has also contributed towards development of various subsystems for projects related to parachute systems. His research interest includes wireless sensor networks and flexible antenna systems.

Mahboob Ahmed, Aerial Delivery Research and Development Establishment, Agra

Mr Mahboob Ahmed received his BTech (Electronics Engineering) from ZHCET, AMU, Aligarh in 2008. Currently he is working as a scientist in Aerial Delivery R&D Establishment (ADRDE), Agra. His areas of work include: Telemetry, data acquisition systems and embedded system design.

S.P. Singh, Aerial Delivery Research and Development Establishment, Agra

Mr S.P. Singh is working as a scientist in Aerial Delivery R&D Establishment (ADRDE), Agra. He is presently heading the Parachute Group in ADRDE. He has developed various parachute systems for different applications. He has expertise in design, fabrication, testing, and analysis of parachute systems.