Written question asked by Kevin McNamara (Labour) on Thursday, 5 April 2001, in the House of Commons. It was due for an answer on Tuesday, 8 May 2001. It was answered by Lord Spellar (Labour) on Tuesday, 8 May 2001 on behalf of the Ministry of Defence.

Ministry of Defence

Question: To ask the Secretary of State for the Home Department, pursuant to his Answer of 2nd April, 366 c68W, what the (a) mass, (b) velocity, (c) shape, (d) aerodynamic properties, (e) composition and (f) stiffness is of the (i) L21A1 and (ii) L5A7; and if he will make a statement.

Answer: Mr. McNamara: To ask the Secretary of State for the Home Department, pursuant to his answer of 2 April 2001, Official Report, column 68W, what the (a) mass, (b) velocity, (c) shape, (d) aerodynamic properties, (e) composition and (f) stiffness is of the (i) L21A1 and (ii) L5A7; and if he will make a statement. [158038] Mr. Spellar: I have been asked to reply. The data in the table for the mass, velocity and hardness are taken from the respective schedule of proof for the two batons. _________________________________________________________________________________________________. L21A1 L5A7 Mass 96.8-99.2g 132-135g Minimum and maximum velocity (at 2 m) 69-76 m/s 55-70 m/s Mean velocity range (at 2 m) 70-74 m/s 60.5-65.0 m/s Shape 37 mm calibre with a 9 mm nose edge radius 37 mm calibre with a 3 mm nose and base and a boat-tail on the base edge radius Aerodynamic properties (estimated drag 0.24 0.64 coefficient, Cd) Composition Polyurethane polymer Polyurethane polymer with an additive to increase density Hardness ({o}IRHD) 92-95 85-90 _________________________________________________________________________________________________.

Secondary information