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  2. T-10 parachute - Wikipedia

    en.wikipedia.org/wiki/T-10_parachute

    US Army paratroopers utilizing the T-10D Parachute during an airborne operation from a C-130. The T-10 Parachute is a series of static line-deployed parachutes used by the militaries for combat mass-assault airborne operations and training. The T-10 parachute was introduced in the early 1950s. In 1976, the B model introduced the anti-inversion ...

  3. Rule of three (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Rule_of_three_(aeronautics)

    In aviation, the rule of three or "3:1 rule of descent" is a rule of thumb that 3 nautical miles (5.6 km) of travel should be allowed for every 1,000 feet (300 m) of descent. [ 1 ] [ 2 ] For example, a descent from flight level 350 would require approximately 35x3=105 nautical miles.

  4. United States Army Airborne School - Wikipedia

    en.wikipedia.org/wiki/United_States_Army...

    The T-10D is a round-shaped parachute and the T-11 is a square-shaped parachute, both using static line extraction with a descent rate of 18–23 ft/sec and 16–20 ft/sec respectively, dependent on the weight and equipment outfitting of the individual jumper. Prospective troopers are taught how to wear the parachute harness correctly and how ...

  5. Instrument approach - Wikipedia

    en.wikipedia.org/wiki/Instrument_approach

    A useful formula pilots use to calculate descent rates (for the standard 3° glide slope): Rate of descent = (ground speed ⁄ 2) × 10. or Rate of descent = ground speed × 5. For other glideslope angles: Rate of descent = glide slope angle × ground speed × 100 / 60, where rate of descent is in feet per minute, and ground speed is in knots.

  6. Joint Precision Airdrop System - Wikipedia

    en.wikipedia.org/wiki/Joint_Precision_Airdrop_System

    The steerable parachute or parafoil is called a "decelerator," and gives the JPADS system directional control throughout its descent by means of decelerator steering lines attached to the Autonomous Guidance Unit (AGU). They create drag on either side of the decelerator, which turns the parachute, thus achieving directional control.

  7. T-11 parachute - Wikipedia

    en.wikipedia.org/wiki/T-11_parachute

    The T-11 is designed to have an average rate of descent of 19 feet per second (5.8 m/s) for the 95th percentile service member, compared with 24 feet per second (7.3 m/s) with the T-10C. This reduction is intended to result in significantly lower landing injury rates for jumpers. [2]

  8. Basic Parachute Course - Wikipedia

    en.wikipedia.org/wiki/Basic_Parachute_Course

    Wearing harnesses suspended from them, trainees jumped from the trainer and traveled the length of the cables in a gradual descent towards the ground, where their progress is arrested by an instructor. Until the late 1990s, the first parachute descent was from a balloon at the dropping zone at Weston-on-the-Green; [3] this has since been phased ...

  9. Malfunction (parachuting) - Wikipedia

    en.wikipedia.org/wiki/Malfunction_(parachuting)

    If it is hung up near the top of the lines, the canopy will not provide sufficient lift or drag, and the rate of descent will be high. In this case one will need to cut away the main and deploy the reserve. If the slider hangs up midway down the lines, the canopy will inflate almost normally (and may or may not be safe to land in that condition).